The Journal of Family Practice

THE CASE

A 37-year-old man with a history of asthma, schizoaffective disorder, and tobacco use (36 packs per year) presented to the clinic after 5 days of worsening cough, reproducible left-sided chest pain, and increasing shortness of breath. He also experienced chills, fatigue, nausea, and vomiting but was afebrile. The patient had not travelled recently nor had direct contact with anyone sick. He also denied intravenous (IV) drug use, alcohol use, and bloody sputum. Recently, he had intentionally lost weight, as recommended by his psychiatrist.

Medication review revealed that he was taking many central-acting agents for schizoaffective disorder, including alprazolam, aripiprazole, desvenlafaxine, and quetiapine. Due to his intermittent asthma since childhood, he used an albuterol inhaler as needed, which currently offered only minimal relief. He denied any history of hospitalization or intubation for asthma.

During the clinic visit, his blood pressure was 90/60 mm Hg and his heart rate was normal. His pulse oximetry was 92% on room air. On physical examination, he had normal-appearing dentition. Auscultation revealed bilateral expiratory wheezes with decreased breath sounds at the left lower lobe.

A plain chest radiograph (CXR) performed in the clinic (FIGURE 1) showed a large, thick-walled cavitary lesion with an air-fluid level in the left lower lobe. The patient was directly admitted to the Family Medicine Inpatient Service. Computed tomography (CT) of the chest with contrast was ordered to rule out empyema or malignancy. The chest CT confirmed the previous findings while also revealing a surrounding satellite nodularity in the left lower lobe (FIGURE 2). QuantiFERON-TB Gold and HIV tests were both negative.

THE DIAGNOSIS

The patient was given a diagnosis of a lung abscess based on symptoms and imaging. An extensive smoking history, as well as multiple sedating medications, increased his likelihood of aspiration.

DISCUSSION

Lung abscess is the probable diagnosis in a patient with indolent infectious symptoms (cough, fever, night sweats) developing over days to weeks and a CXR finding of pulmonary opacity, often with an air-fluid level.^1-4 A lung abscess is a circumscribed collection of pus in the lung parenchyma that develops as a result of microbial infection.⁴

Primary vs secondary abscess. Lung abscesses can be divided into 2 groups: primary and secondary abscesses. Primary abscesses (60%) occur without any other medical condition or in patients prone to aspiration.⁵ Secondary abscesses occur in the setting of a comorbid medical condition, such as lung disease, heart disease, bronchogenic neoplasm, or immunocompromised status.⁵

Continue to: With a primary lung abscess...

With a primary lung abscess, oropharyngeal contents are aspirated (generally while the patient is unconscious) and contain mixed flora.² The aspirate typically migrates to the posterior segments of the upper lobes and to the superior segments of the lower lobes. These abscesses are usually singular and have an air-fluid level.^1,2

Secondary lung abscesses occur in bronchial obstruction (by tumor, foreign body, or enlarged lymph nodes), with coexisting lung diseases (bronchiectasis, cystic fibrosis, infected pulmonary infarcts, lung contusion) or by direct spread (broncho-esophageal fistula, subphrenic abscess).⁶ Secondary abscesses are associated with a poorer prognosis, dependent on the patient’s general condition and underlying disease.⁷

What to rule out

The differential diagnosis of cavitary lung lesion includes tuberculosis, necrotizing pneumonia, bronchial carcinoma, pulmonary embolism, vasculitis (eg, Churg-Strauss syndrome), and localized pleural empyema.^1,4 A CT scan is helpful to differentiate between a parenchymal lesion and pleural collection, which may not be as clear on CXR.^1,4

Tuberculosis manifests with fatigue, weight loss, and night sweats; a chest CT will reveal a cavitating lesion (usually upper lobe) with a characteristic “rim sign” that includes caseous necrosis surrounded by a peripheral enhancing rim.⁸

Necrotizing pneumonia manifests as acute, fulminant infection. The most common causative organisms on sputum culture are Streptococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas species. Plain radiography will reveal multiple cavities and often associated pleural effusion and empyema.⁹

Continue to: Excavating bronchogenic carcinomas

Excavating bronchogenic carcinomas differ from a lung abscess in that a patient with the latter is typically, but not always, febrile and has purulent sputum. On imaging, a bronchogenic carcinoma has a thicker and more irregular wall than a lung abscess.¹⁰

Treatment

When antibiotics first became available, penicillin was used to treat lung abscess.¹¹ Then IV clindamycin became the drug of choice after 2 trials demonstrated its superiority to IV penicillin.^12,13 More recently, clindamycin alone has fallen out of favor due to growing anaerobic resistance.¹⁴

Current therapy includes beta-lactam with beta-lactamase inhibitors.¹⁴ Lung abscesses are typically polymicrobial and thus carry different degrees of antibiotic resistance.^15,16 If culture data are available, targeted therapy is preferred, especially for secondary abscesses.⁷ Antibiotic therapy is usually continued until a CXR reveals a small lesion or is clear, which may require several months of outpatient oral antibiotic therapy.⁴

Our patient was treated with IV clindamycin for 3 days in the hospital. Clindamycin was chosen due to his penicillin allergy and started empirically without any culture data. He was transitioned to oral clindamycin and completed a total 3-week course as his CXR continued to show improvement (FIGURE 3). He did not undergo bronchoscopy. A follow-up CXR showed resolution of lung abscess at 9 months. (FIGURE 4).

THE TAKEAWAY

All patients with lung abscesses should have sputum culture with gram stain done—­ideally prior to starting antibiotics.^3,4 Bronchoscopy should be considered for patients with atypical presentations or those who fail standard therapy, but may be used in other cases, as well.³

CORRESPONDENCE
Morteza Khodaee, MD, MPH, AFW Clinic, 3055 Roslyn Street, Denver, CO 80238; [email protected]

THE CASE

A 37-year-old man with a history of asthma, schizoaffective disorder, and tobacco use (36 packs per year) presented to the clinic after 5 days of worsening cough, reproducible left-sided chest pain, and increasing shortness of breath. He also experienced chills, fatigue, nausea, and vomiting but was afebrile. The patient had not travelled recently nor had direct contact with anyone sick. He also denied intravenous (IV) drug use, alcohol use, and bloody sputum. Recently, he had intentionally lost weight, as recommended by his psychiatrist.

Medication review revealed that he was taking many central-acting agents for schizoaffective disorder, including alprazolam, aripiprazole, desvenlafaxine, and quetiapine. Due to his intermittent asthma since childhood, he used an albuterol inhaler as needed, which currently offered only minimal relief. He denied any history of hospitalization or intubation for asthma.

During the clinic visit, his blood pressure was 90/60 mm Hg and his heart rate was normal. His pulse oximetry was 92% on room air. On physical examination, he had normal-appearing dentition. Auscultation revealed bilateral expiratory wheezes with decreased breath sounds at the left lower lobe.

A plain chest radiograph (CXR) performed in the clinic (FIGURE 1) showed a large, thick-walled cavitary lesion with an air-fluid level in the left lower lobe. The patient was directly admitted to the Family Medicine Inpatient Service. Computed tomography (CT) of the chest with contrast was ordered to rule out empyema or malignancy. The chest CT confirmed the previous findings while also revealing a surrounding satellite nodularity in the left lower lobe (FIGURE 2). QuantiFERON-TB Gold and HIV tests were both negative.

THE DIAGNOSIS

The patient was given a diagnosis of a lung abscess based on symptoms and imaging. An extensive smoking history, as well as multiple sedating medications, increased his likelihood of aspiration.

DISCUSSION

Lung abscess is the probable diagnosis in a patient with indolent infectious symptoms (cough, fever, night sweats) developing over days to weeks and a CXR finding of pulmonary opacity, often with an air-fluid level.^1-4 A lung abscess is a circumscribed collection of pus in the lung parenchyma that develops as a result of microbial infection.⁴

Primary vs secondary abscess. Lung abscesses can be divided into 2 groups: primary and secondary abscesses. Primary abscesses (60%) occur without any other medical condition or in patients prone to aspiration.⁵ Secondary abscesses occur in the setting of a comorbid medical condition, such as lung disease, heart disease, bronchogenic neoplasm, or immunocompromised status.⁵

Continue to: With a primary lung abscess...

With a primary lung abscess, oropharyngeal contents are aspirated (generally while the patient is unconscious) and contain mixed flora.² The aspirate typically migrates to the posterior segments of the upper lobes and to the superior segments of the lower lobes. These abscesses are usually singular and have an air-fluid level.^1,2

Secondary lung abscesses occur in bronchial obstruction (by tumor, foreign body, or enlarged lymph nodes), with coexisting lung diseases (bronchiectasis, cystic fibrosis, infected pulmonary infarcts, lung contusion) or by direct spread (broncho-esophageal fistula, subphrenic abscess).⁶ Secondary abscesses are associated with a poorer prognosis, dependent on the patient’s general condition and underlying disease.⁷

What to rule out

The differential diagnosis of cavitary lung lesion includes tuberculosis, necrotizing pneumonia, bronchial carcinoma, pulmonary embolism, vasculitis (eg, Churg-Strauss syndrome), and localized pleural empyema.^1,4 A CT scan is helpful to differentiate between a parenchymal lesion and pleural collection, which may not be as clear on CXR.^1,4

Tuberculosis manifests with fatigue, weight loss, and night sweats; a chest CT will reveal a cavitating lesion (usually upper lobe) with a characteristic “rim sign” that includes caseous necrosis surrounded by a peripheral enhancing rim.⁸

Necrotizing pneumonia manifests as acute, fulminant infection. The most common causative organisms on sputum culture are Streptococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas species. Plain radiography will reveal multiple cavities and often associated pleural effusion and empyema.⁹

Continue to: Excavating bronchogenic carcinomas

Excavating bronchogenic carcinomas differ from a lung abscess in that a patient with the latter is typically, but not always, febrile and has purulent sputum. On imaging, a bronchogenic carcinoma has a thicker and more irregular wall than a lung abscess.¹⁰

Treatment

When antibiotics first became available, penicillin was used to treat lung abscess.¹¹ Then IV clindamycin became the drug of choice after 2 trials demonstrated its superiority to IV penicillin.^12,13 More recently, clindamycin alone has fallen out of favor due to growing anaerobic resistance.¹⁴

Current therapy includes beta-lactam with beta-lactamase inhibitors.¹⁴ Lung abscesses are typically polymicrobial and thus carry different degrees of antibiotic resistance.^15,16 If culture data are available, targeted therapy is preferred, especially for secondary abscesses.⁷ Antibiotic therapy is usually continued until a CXR reveals a small lesion or is clear, which may require several months of outpatient oral antibiotic therapy.⁴

Our patient was treated with IV clindamycin for 3 days in the hospital. Clindamycin was chosen due to his penicillin allergy and started empirically without any culture data. He was transitioned to oral clindamycin and completed a total 3-week course as his CXR continued to show improvement (FIGURE 3). He did not undergo bronchoscopy. A follow-up CXR showed resolution of lung abscess at 9 months. (FIGURE 4).

THE TAKEAWAY

All patients with lung abscesses should have sputum culture with gram stain done—­ideally prior to starting antibiotics.^3,4 Bronchoscopy should be considered for patients with atypical presentations or those who fail standard therapy, but may be used in other cases, as well.³

CORRESPONDENCE
Morteza Khodaee, MD, MPH, AFW Clinic, 3055 Roslyn Street, Denver, CO 80238; [email protected]

THE CASE

A 37-year-old man with a history of asthma, schizoaffective disorder, and tobacco use (36 packs per year) presented to the clinic after 5 days of worsening cough, reproducible left-sided chest pain, and increasing shortness of breath. He also experienced chills, fatigue, nausea, and vomiting but was afebrile. The patient had not travelled recently nor had direct contact with anyone sick. He also denied intravenous (IV) drug use, alcohol use, and bloody sputum. Recently, he had intentionally lost weight, as recommended by his psychiatrist.

Medication review revealed that he was taking many central-acting agents for schizoaffective disorder, including alprazolam, aripiprazole, desvenlafaxine, and quetiapine. Due to his intermittent asthma since childhood, he used an albuterol inhaler as needed, which currently offered only minimal relief. He denied any history of hospitalization or intubation for asthma.

During the clinic visit, his blood pressure was 90/60 mm Hg and his heart rate was normal. His pulse oximetry was 92% on room air. On physical examination, he had normal-appearing dentition. Auscultation revealed bilateral expiratory wheezes with decreased breath sounds at the left lower lobe.

A plain chest radiograph (CXR) performed in the clinic (FIGURE 1) showed a large, thick-walled cavitary lesion with an air-fluid level in the left lower lobe. The patient was directly admitted to the Family Medicine Inpatient Service. Computed tomography (CT) of the chest with contrast was ordered to rule out empyema or malignancy. The chest CT confirmed the previous findings while also revealing a surrounding satellite nodularity in the left lower lobe (FIGURE 2). QuantiFERON-TB Gold and HIV tests were both negative.

THE DIAGNOSIS

The patient was given a diagnosis of a lung abscess based on symptoms and imaging. An extensive smoking history, as well as multiple sedating medications, increased his likelihood of aspiration.

DISCUSSION

Lung abscess is the probable diagnosis in a patient with indolent infectious symptoms (cough, fever, night sweats) developing over days to weeks and a CXR finding of pulmonary opacity, often with an air-fluid level.^1-4 A lung abscess is a circumscribed collection of pus in the lung parenchyma that develops as a result of microbial infection.⁴

Primary vs secondary abscess. Lung abscesses can be divided into 2 groups: primary and secondary abscesses. Primary abscesses (60%) occur without any other medical condition or in patients prone to aspiration.⁵ Secondary abscesses occur in the setting of a comorbid medical condition, such as lung disease, heart disease, bronchogenic neoplasm, or immunocompromised status.⁵

Continue to: With a primary lung abscess...

With a primary lung abscess, oropharyngeal contents are aspirated (generally while the patient is unconscious) and contain mixed flora.² The aspirate typically migrates to the posterior segments of the upper lobes and to the superior segments of the lower lobes. These abscesses are usually singular and have an air-fluid level.^1,2

Secondary lung abscesses occur in bronchial obstruction (by tumor, foreign body, or enlarged lymph nodes), with coexisting lung diseases (bronchiectasis, cystic fibrosis, infected pulmonary infarcts, lung contusion) or by direct spread (broncho-esophageal fistula, subphrenic abscess).⁶ Secondary abscesses are associated with a poorer prognosis, dependent on the patient’s general condition and underlying disease.⁷

What to rule out

The differential diagnosis of cavitary lung lesion includes tuberculosis, necrotizing pneumonia, bronchial carcinoma, pulmonary embolism, vasculitis (eg, Churg-Strauss syndrome), and localized pleural empyema.^1,4 A CT scan is helpful to differentiate between a parenchymal lesion and pleural collection, which may not be as clear on CXR.^1,4

Tuberculosis manifests with fatigue, weight loss, and night sweats; a chest CT will reveal a cavitating lesion (usually upper lobe) with a characteristic “rim sign” that includes caseous necrosis surrounded by a peripheral enhancing rim.⁸

Necrotizing pneumonia manifests as acute, fulminant infection. The most common causative organisms on sputum culture are Streptococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas species. Plain radiography will reveal multiple cavities and often associated pleural effusion and empyema.⁹

Continue to: Excavating bronchogenic carcinomas

Excavating bronchogenic carcinomas differ from a lung abscess in that a patient with the latter is typically, but not always, febrile and has purulent sputum. On imaging, a bronchogenic carcinoma has a thicker and more irregular wall than a lung abscess.¹⁰

Treatment

When antibiotics first became available, penicillin was used to treat lung abscess.¹¹ Then IV clindamycin became the drug of choice after 2 trials demonstrated its superiority to IV penicillin.^12,13 More recently, clindamycin alone has fallen out of favor due to growing anaerobic resistance.¹⁴

Current therapy includes beta-lactam with beta-lactamase inhibitors.¹⁴ Lung abscesses are typically polymicrobial and thus carry different degrees of antibiotic resistance.^15,16 If culture data are available, targeted therapy is preferred, especially for secondary abscesses.⁷ Antibiotic therapy is usually continued until a CXR reveals a small lesion or is clear, which may require several months of outpatient oral antibiotic therapy.⁴

Our patient was treated with IV clindamycin for 3 days in the hospital. Clindamycin was chosen due to his penicillin allergy and started empirically without any culture data. He was transitioned to oral clindamycin and completed a total 3-week course as his CXR continued to show improvement (FIGURE 3). He did not undergo bronchoscopy. A follow-up CXR showed resolution of lung abscess at 9 months. (FIGURE 4).

THE TAKEAWAY

All patients with lung abscesses should have sputum culture with gram stain done—­ideally prior to starting antibiotics.^3,4 Bronchoscopy should be considered for patients with atypical presentations or those who fail standard therapy, but may be used in other cases, as well.³

CORRESPONDENCE
Morteza Khodaee, MD, MPH, AFW Clinic, 3055 Roslyn Street, Denver, CO 80238; [email protected]

ILLUSTRATIVE CASE

An otherwise healthy 56-year-old woman presents to the emergency department (ED) with a productive cough of 4 days’ duration. A review of her history is negative for recurrent upper respiratory infections, smoking, or environmental exposures. Her physical exam is unremarkable and, more specifically, her pulmonary exam and vital signs (temperature, respiratory rate, and heart rate) are within normal limits. The patient states that last year her friend had similar symptoms and was given a diagnosis of pneumonia. Is it necessary to order a chest x-ray in this patient to rule out community-acquired pneumonia (CAP)?

CAP is a common pulmonary condition seen in the outpatient setting in the United States, representing more than 4.5 million outpatient visits in the years 2009 to 2010.² Historically, a diagnosis of CAP has been based on clinical findings in conjunction with infiltrates seen on chest x-ray.

In 2017, more than 5 million visits to the ED were due to a cough.³ The use of radiographic imaging in EDs has been increasing. There were 49 million x-rays and 2.7 million noncardiac chest computed tomography (CT) scans performed in 2016, many of which were for patients with cough.^3,4 Although imaging is an extremely useful tool and indicated in many instances, the ability to rule out CAP in an adult who presents with a cough by using a set of simple, clinically based heuristics without requiring imaging would help to increase efficiency, limit cost, and decrease exposure of patients to unnecessary and potentially harmful diagnostic studies.

Clinical decision rules (CDRs) are simple heuristics that can stratify patients as either high risk or low risk for specific diseases. Two older large, prospective cross-­sectional studies developed CDRs to determine the probability of CAP based on symptoms (eg, night sweats, myalgias, and sputum production) and clinical findings (eg, temperature > 37.8 °C [100 °F], tachypnea, tachycardia, rales, and decreased breath sounds).^5,6 This meta-analysis includes these studies and more recent studies^7-9 used to develop a CDR that focuses solely on a few specific signs and symptoms that can reliably rule out CAP without imaging, and so prove highly useful for busy primary care clinicians.

STUDY SUMMARY

This simple approach rules out CAP in outpatients 99.6% of the time

This systematic review and meta-analysis included studies that used 2 or more signs, symptoms, or point-of-care tests to determine the patient’s risk for CAP.¹ Twelve studies (N = 10,254) met inclusion criteria by applying a CDR to adults or adolescents presenting with respiratory signs or symptoms potentially suggestive of CAP to either an outpatient setting or an ED. Prospective cohort, cross-sectional, and case-control studies were included when a chest x-ray or CT was utilized as the primary reference standard. Exclusion criteria included studies of military or nursing home populations and studies in which the majority of patients had hospital- or ventilator-associated pneumonia or were immunocompromised.

For adult outpatients who present with acute cough, this clinical decision rule can quickly and accurately rule out CAP without the need for diagnostic imaging.

A simple, highly useful CDR emerged from 3 of the studies (N = 1865).^7-9 Two of these studies were described as case-control studies with prospective enrollment of patients older than 17 years in both outpatient and ED settings.^7,8 One study was conducted in the United States (mean age, 65 years) and the other in Iran (mean age, 60 years). The third was a Chilean prospective cohort study of ED patients older than 15 years (mean age, 53 years).⁹ In each of these studies, the outpatient or ED physicians collected all clinical data and documented their physical exam prior to receiving the chest radiograph results. The radiologists were masked to the clinical findings at the time of their interpretation.

Results. From the meta-analysis, a simple CDR emerged for patients with normal vital signs (temperature, respiratory rate, and heart rate) and a normal pulmonary exam that virtually ruled out CAP (sensitivity = 96%; 95% CI, 92%–98%; and negative likelihood ratio = 0.10; 95% CI, 0.07–0.13). In patients presenting to an outpatient clinic with acute cough with a 4% baseline prevalence rate of pneumonia, this CDR ruled out CAP 99.6% of the time.

Continue to: WHAT'S NEW

A clinical decision rule validated for accuracy

This is the first validated CDR that accurately rules out CAP in the outpatient or ED setting using parameters easily obtainable during a clinical exam.

CAVEATS

Proceed with caution in the young and the very old

Two of the 3 studies in this CDR had an overall moderate risk of bias, whereas the third study was determined to be at low risk of bias, based on appraisal with the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS-2) framework.¹⁰

The mean age range in these 3 studies was 53 to 66 years (without further data such as standard deviation), suggesting that application of the CDR to adults who fall at extremes of age should be done with a modicum of caution.

Additionally, although the symptom complex of COVID-19 pneumonia would suggest that this CDR would likely remain accurate today, it has not been validated in patients with COVID-19 infection.

CHALLENGES TO IMPLEMENTATION

Potential reluctance to forgo imaging

Beyond the caveats regarding COVID-19, the use of a simple CDR to reliably exclude pneumonia should have no barrier to implementation in an outpatient primary care setting or ED, although there could be reluctance on the part of both providers and patients to fully embrace this simple tool without a confirmatory chest x-ray.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center for Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health.

ILLUSTRATIVE CASE

An otherwise healthy 56-year-old woman presents to the emergency department (ED) with a productive cough of 4 days’ duration. A review of her history is negative for recurrent upper respiratory infections, smoking, or environmental exposures. Her physical exam is unremarkable and, more specifically, her pulmonary exam and vital signs (temperature, respiratory rate, and heart rate) are within normal limits. The patient states that last year her friend had similar symptoms and was given a diagnosis of pneumonia. Is it necessary to order a chest x-ray in this patient to rule out community-acquired pneumonia (CAP)?

CAP is a common pulmonary condition seen in the outpatient setting in the United States, representing more than 4.5 million outpatient visits in the years 2009 to 2010.² Historically, a diagnosis of CAP has been based on clinical findings in conjunction with infiltrates seen on chest x-ray.

In 2017, more than 5 million visits to the ED were due to a cough.³ The use of radiographic imaging in EDs has been increasing. There were 49 million x-rays and 2.7 million noncardiac chest computed tomography (CT) scans performed in 2016, many of which were for patients with cough.^3,4 Although imaging is an extremely useful tool and indicated in many instances, the ability to rule out CAP in an adult who presents with a cough by using a set of simple, clinically based heuristics without requiring imaging would help to increase efficiency, limit cost, and decrease exposure of patients to unnecessary and potentially harmful diagnostic studies.

Clinical decision rules (CDRs) are simple heuristics that can stratify patients as either high risk or low risk for specific diseases. Two older large, prospective cross-­sectional studies developed CDRs to determine the probability of CAP based on symptoms (eg, night sweats, myalgias, and sputum production) and clinical findings (eg, temperature > 37.8 °C [100 °F], tachypnea, tachycardia, rales, and decreased breath sounds).^5,6 This meta-analysis includes these studies and more recent studies^7-9 used to develop a CDR that focuses solely on a few specific signs and symptoms that can reliably rule out CAP without imaging, and so prove highly useful for busy primary care clinicians.

STUDY SUMMARY

This simple approach rules out CAP in outpatients 99.6% of the time

This systematic review and meta-analysis included studies that used 2 or more signs, symptoms, or point-of-care tests to determine the patient’s risk for CAP.¹ Twelve studies (N = 10,254) met inclusion criteria by applying a CDR to adults or adolescents presenting with respiratory signs or symptoms potentially suggestive of CAP to either an outpatient setting or an ED. Prospective cohort, cross-sectional, and case-control studies were included when a chest x-ray or CT was utilized as the primary reference standard. Exclusion criteria included studies of military or nursing home populations and studies in which the majority of patients had hospital- or ventilator-associated pneumonia or were immunocompromised.

For adult outpatients who present with acute cough, this clinical decision rule can quickly and accurately rule out CAP without the need for diagnostic imaging.

A simple, highly useful CDR emerged from 3 of the studies (N = 1865).^7-9 Two of these studies were described as case-control studies with prospective enrollment of patients older than 17 years in both outpatient and ED settings.^7,8 One study was conducted in the United States (mean age, 65 years) and the other in Iran (mean age, 60 years). The third was a Chilean prospective cohort study of ED patients older than 15 years (mean age, 53 years).⁹ In each of these studies, the outpatient or ED physicians collected all clinical data and documented their physical exam prior to receiving the chest radiograph results. The radiologists were masked to the clinical findings at the time of their interpretation.

Results. From the meta-analysis, a simple CDR emerged for patients with normal vital signs (temperature, respiratory rate, and heart rate) and a normal pulmonary exam that virtually ruled out CAP (sensitivity = 96%; 95% CI, 92%–98%; and negative likelihood ratio = 0.10; 95% CI, 0.07–0.13). In patients presenting to an outpatient clinic with acute cough with a 4% baseline prevalence rate of pneumonia, this CDR ruled out CAP 99.6% of the time.

Continue to: WHAT'S NEW

A clinical decision rule validated for accuracy

This is the first validated CDR that accurately rules out CAP in the outpatient or ED setting using parameters easily obtainable during a clinical exam.

CAVEATS

Proceed with caution in the young and the very old

Two of the 3 studies in this CDR had an overall moderate risk of bias, whereas the third study was determined to be at low risk of bias, based on appraisal with the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS-2) framework.¹⁰

The mean age range in these 3 studies was 53 to 66 years (without further data such as standard deviation), suggesting that application of the CDR to adults who fall at extremes of age should be done with a modicum of caution.

Additionally, although the symptom complex of COVID-19 pneumonia would suggest that this CDR would likely remain accurate today, it has not been validated in patients with COVID-19 infection.

CHALLENGES TO IMPLEMENTATION

Potential reluctance to forgo imaging

Beyond the caveats regarding COVID-19, the use of a simple CDR to reliably exclude pneumonia should have no barrier to implementation in an outpatient primary care setting or ED, although there could be reluctance on the part of both providers and patients to fully embrace this simple tool without a confirmatory chest x-ray.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center for Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health.

ILLUSTRATIVE CASE

An otherwise healthy 56-year-old woman presents to the emergency department (ED) with a productive cough of 4 days’ duration. A review of her history is negative for recurrent upper respiratory infections, smoking, or environmental exposures. Her physical exam is unremarkable and, more specifically, her pulmonary exam and vital signs (temperature, respiratory rate, and heart rate) are within normal limits. The patient states that last year her friend had similar symptoms and was given a diagnosis of pneumonia. Is it necessary to order a chest x-ray in this patient to rule out community-acquired pneumonia (CAP)?

CAP is a common pulmonary condition seen in the outpatient setting in the United States, representing more than 4.5 million outpatient visits in the years 2009 to 2010.² Historically, a diagnosis of CAP has been based on clinical findings in conjunction with infiltrates seen on chest x-ray.

In 2017, more than 5 million visits to the ED were due to a cough.³ The use of radiographic imaging in EDs has been increasing. There were 49 million x-rays and 2.7 million noncardiac chest computed tomography (CT) scans performed in 2016, many of which were for patients with cough.^3,4 Although imaging is an extremely useful tool and indicated in many instances, the ability to rule out CAP in an adult who presents with a cough by using a set of simple, clinically based heuristics without requiring imaging would help to increase efficiency, limit cost, and decrease exposure of patients to unnecessary and potentially harmful diagnostic studies.

Clinical decision rules (CDRs) are simple heuristics that can stratify patients as either high risk or low risk for specific diseases. Two older large, prospective cross-­sectional studies developed CDRs to determine the probability of CAP based on symptoms (eg, night sweats, myalgias, and sputum production) and clinical findings (eg, temperature > 37.8 °C [100 °F], tachypnea, tachycardia, rales, and decreased breath sounds).^5,6 This meta-analysis includes these studies and more recent studies^7-9 used to develop a CDR that focuses solely on a few specific signs and symptoms that can reliably rule out CAP without imaging, and so prove highly useful for busy primary care clinicians.

STUDY SUMMARY

This simple approach rules out CAP in outpatients 99.6% of the time

This systematic review and meta-analysis included studies that used 2 or more signs, symptoms, or point-of-care tests to determine the patient’s risk for CAP.¹ Twelve studies (N = 10,254) met inclusion criteria by applying a CDR to adults or adolescents presenting with respiratory signs or symptoms potentially suggestive of CAP to either an outpatient setting or an ED. Prospective cohort, cross-sectional, and case-control studies were included when a chest x-ray or CT was utilized as the primary reference standard. Exclusion criteria included studies of military or nursing home populations and studies in which the majority of patients had hospital- or ventilator-associated pneumonia or were immunocompromised.

For adult outpatients who present with acute cough, this clinical decision rule can quickly and accurately rule out CAP without the need for diagnostic imaging.

A simple, highly useful CDR emerged from 3 of the studies (N = 1865).^7-9 Two of these studies were described as case-control studies with prospective enrollment of patients older than 17 years in both outpatient and ED settings.^7,8 One study was conducted in the United States (mean age, 65 years) and the other in Iran (mean age, 60 years). The third was a Chilean prospective cohort study of ED patients older than 15 years (mean age, 53 years).⁹ In each of these studies, the outpatient or ED physicians collected all clinical data and documented their physical exam prior to receiving the chest radiograph results. The radiologists were masked to the clinical findings at the time of their interpretation.

Results. From the meta-analysis, a simple CDR emerged for patients with normal vital signs (temperature, respiratory rate, and heart rate) and a normal pulmonary exam that virtually ruled out CAP (sensitivity = 96%; 95% CI, 92%–98%; and negative likelihood ratio = 0.10; 95% CI, 0.07–0.13). In patients presenting to an outpatient clinic with acute cough with a 4% baseline prevalence rate of pneumonia, this CDR ruled out CAP 99.6% of the time.

Continue to: WHAT'S NEW

A clinical decision rule validated for accuracy

This is the first validated CDR that accurately rules out CAP in the outpatient or ED setting using parameters easily obtainable during a clinical exam.

CAVEATS

Proceed with caution in the young and the very old

Two of the 3 studies in this CDR had an overall moderate risk of bias, whereas the third study was determined to be at low risk of bias, based on appraisal with the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS-2) framework.¹⁰

The mean age range in these 3 studies was 53 to 66 years (without further data such as standard deviation), suggesting that application of the CDR to adults who fall at extremes of age should be done with a modicum of caution.

Additionally, although the symptom complex of COVID-19 pneumonia would suggest that this CDR would likely remain accurate today, it has not been validated in patients with COVID-19 infection.

CHALLENGES TO IMPLEMENTATION

Potential reluctance to forgo imaging

Beyond the caveats regarding COVID-19, the use of a simple CDR to reliably exclude pneumonia should have no barrier to implementation in an outpatient primary care setting or ED, although there could be reluctance on the part of both providers and patients to fully embrace this simple tool without a confirmatory chest x-ray.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center for Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health.

THE CASE

John C* is a 57-year-old man with hypertension, hyperlipidemia, and schizophrenia who followed up with a psychiatrist monthly at the community mental health center (CMHC). He had no primary care doctor. His psychiatrist referred him to our new Integrated Behavioral Health (IBH) clinic, also located in the CMHC, to see a family physician for complaints of urinary frequency, blurred vision, thirst, and weight loss. An on-site fingerstick revealed his blood glucose to be 357 mg/dL. Given the presumptive diagnosis of diabetes, we checked his bloodwork, prescribed metformin, and referred him for diabetes education. That evening, his lab results showed a hemoglobin A1C > 17%, a basic metabolic panel with an anion gap, ketones in the urine, and a low C-peptide level. We were unable to reach Mr. C by phone for further management.

● How would you proceed with this patient?

* The patient’s name has been changed to protect his identity.

Coordination of behavioral health and primary care can take many forms, from simple synchronized care via referral, to co-located services, to fully integrated care.¹ Reverse integration, the subject of this article, is the provision of primary care in mental health or substance use disorder treatment settings. Published evidence to date regarding this model is minimal. This article describes our experience in developing a model of reverse integration in which family physicians and nurse practitioners are embedded in a CMHC with psychiatric providers, counselors, and social workers to jointly address physical and behavioral health care issues and address social determinants of health.

The rationale for reverse integration

Many individuals with serious mental illness (SMI), including schizophrenia and bipolar disorder, have rates of comorbid chronic physical health conditions that are higher than in the general population. These conditions include obesity, diabetes, metabolic syndrome, cardiovascular disease, chronic obstructive pulmonary disease, HIV, viral hepatitis, and tuberculosis.² Outcomes in the SMI group are also considerably worse than in the general population. People with SMI have a demonstrated loss of up to 32 years of potential life per patient compared with the general-­population average, primarily due to poor physical health.² Maladaptive health behaviors such as poor diet, lack of physical activity, tobacco use, and substance use contribute to this increased mortality.^2,3 Social determinants of poor health are more prevalent among individuals with SMI, and a relative inability to collaborate in one’s own health care due to psychiatric symptoms further exacerbates the challenges.

Patients at a community mental health center may grow tired of conversation or feel overwhelmed in completing multiple tasks. Visits may need to be shorter and more frequent.

Many individuals with SMI receive psychiatric care, case management, counseling, and psychosocial services in CMHCs. Their psychiatric caregiver may be their only regular health care provider. Family physicians—who receive residency training in behavioral health and social determinants of health in community settings—are distinctively capable of improving overall health care outcomes of patients with SMI.

THE ADVANTAGES OF A REVERSE-INTEGRATION PRACTICE MODEL

Delivering primary care in a CMHC with a behavioral health team can benefit patients with SMI and be a satisfying practice for family physicians. Specifically, family physicians

• find that caring for complex patients can be less stressful because they benefit from the knowledge and resources of the CMHC team. The CMHC team offers case management, counseling, employment services, and housing assistance, so the primary care provider and patient are well supported.
• see fewer patients per hour due to higher visit complexity (and coding). In our experience, team-based care and additional time with patients make complex patient care more enjoyable and less frustrating.
• benefit from a situation in which patients feel safe because the CMHC support staff knows them well.

Continue to: Other benefits

Other benefits. When primary care is delivered in a CMHC, there are “huddles” and warm handoffs that allow for bidirectional collaboration and care coordination between the primary care and behavioral health teams in real time. In addition, family medicine residents, medical students, and other learners can be successfully included in an IBH clinic for patients with SMI. The behavioral health team provides the mentorship, education, and modelling of skills needed to work with this population, including limit-setting, empathy, patience, and motivational interviewing.

For their part, learners self-report increased comfort and interest in working with underserved populations and improved awareness of the social determinants of health after these experiences.^4,5 Many patients at CMHCs are comfortable working with learners if continuity is maintained with a primary care provider.

Challenges we’ve faced, tips we can offer

For primary care providers, the unique workplace culture, terminology, and patient population encountered in a CMHC can be challenging. Also challenging can be the combining of things such as electronic medical records (EMRs).

Culture. The CMHC model focuses on team-based care spearheaded by case managers, in contrast to the traditional family medicine model wherein the physician coordinates services. Case managers provide assessments of client stability and readiness to be seen. They also attend primary care visits to support patient interactions, provide important psychosocial information, and assess adherence to care.

Terminology. It’s not always easy to shift to different terminology in this culture. Thus, orientation needs to address things such as the use of the word “patient,” rather than “client,” when charting.

Continue to: The complexities of the patient population

The complexities of the patient population. Many patients treated at a CMHC have a history of trauma, anxiety, and paranoia, requiring adjustments to exam practices such as using smaller speculums, providing more physical space, and offering to leave examination room doors open while patients are waiting.

In addition, individuals with SMI often have multiple health conditions, but they may become uncomfortable with physical closeness, grow tired of conversation, or feel overwhelmed when asked to complete multiple tasks in 1 visit. As a result, visits may need to be shorter and more frequent.

It’s also worth noting that, in our experience, CMHC patients may have a higher no-show rate than typical primary care clinics, requiring flexibility in scheduling. To fill vacant primary care time slots, our front desk staff uses strategies such as waiting lists and offering walk-in visits to patients who are on site for other services.

Ideally, IBH clinics use a single, fully integrated EMR, but this is not always possible. If the primary care and CMHC EMR systems do not connect, then record review and repeat documentation is needed, while care is taken to adhere to the confidentiality standards of a particular state.

Standards of care and state policies. Written standards of care, procedures, and accreditation in CMHCs rarely include provisions for common primary care practice, such as vaccines, in-clinic medications, and implements for simple procedures. To provide these services in our clinic, we ordered/stocked the needed supplies and instituted protocols that mirrored our other outpatient family medicine clinical sites.

Continue to: Some states may have...

Some states may have policies that prevent reimbursement for mental health and primary care services billed on the same day. Seeing a family physician and a psychiatry provider on the same day is convenient for patients and allows for collaboration between providers. But reimbursement rules can vary by state, so starting an IBH clinic like this requires research into local billing regulations.

WANT TO START AN INTEGRATED BEHAVIORAL HEALTH CLINIC?

Detailed instruction on starting a primary care clinic in a CMHC is beyond the scope of this article. However, the Substance Abuse and Mental Health Services Administration provides guidance on integrating primary care services into a local CMHC.⁶ Start by performing a baseline needs assessment of the CMHC and its patients to help guide clinic design. Leadership buy-in is key.

The community mental health center model focuses on team-based care spearheaded by case managers. This contrasts with the family medicine model, in which the physician coordinates services.

Leadership must provide adequate time and financial and technological support. This includes identifying appropriate space for primary care, offering training on using the EMR, and obtaining support from Finance to develop a realistic and competent business plan with an appropriate budgetary runway for start-up. (This may include securing grants in the beginning.)

We recommend starting small and expanding slowly. Once the clinic is operational, formal pathways for good communication are necessary. This includes holding regular team meetings to develop and revise clinic workflows—eg, patient enrollment, protocols, and administrative procedures such as managing medications and vaccinations—as well as addressing space, staffing, and training issues that arise. The IBH transitional leadership structure must include clinicians from both primary care and behavioral health, support staff, and the administration. Finally, you need the right staff—people who are passionate, flexible, and interested in trying something new.

THE CASE

The next day, an outreach was made to the CMHC nurse, who had the case manager go to Mr. C’s house and bring him to the CMHC for education on insulin injection, glucometer use, and diabetes nutrition. Mr. C was prescribed long-acting insulin at bedtime; his metformin was stopped and he was monitored closely.

Continue to: Mr. C now calls...

Mr. C now calls the CMHC nurse every few weeks to report his blood sugar levels, have his insulin dose adjusted, or just say “hello.” He continues to see his psychiatrist every month and his family physician every 4 months. The team collaborates as issues arise. His diabetes has been well controlled for more than 3 years.

The IBH clinic has grown in number of patients and family medicine providers, is self-sustaining, and has expanded services to include hepatitis C treatment. 

THE CASE

John C* is a 57-year-old man with hypertension, hyperlipidemia, and schizophrenia who followed up with a psychiatrist monthly at the community mental health center (CMHC). He had no primary care doctor. His psychiatrist referred him to our new Integrated Behavioral Health (IBH) clinic, also located in the CMHC, to see a family physician for complaints of urinary frequency, blurred vision, thirst, and weight loss. An on-site fingerstick revealed his blood glucose to be 357 mg/dL. Given the presumptive diagnosis of diabetes, we checked his bloodwork, prescribed metformin, and referred him for diabetes education. That evening, his lab results showed a hemoglobin A1C > 17%, a basic metabolic panel with an anion gap, ketones in the urine, and a low C-peptide level. We were unable to reach Mr. C by phone for further management.

● How would you proceed with this patient?

* The patient’s name has been changed to protect his identity.

Coordination of behavioral health and primary care can take many forms, from simple synchronized care via referral, to co-located services, to fully integrated care.¹ Reverse integration, the subject of this article, is the provision of primary care in mental health or substance use disorder treatment settings. Published evidence to date regarding this model is minimal. This article describes our experience in developing a model of reverse integration in which family physicians and nurse practitioners are embedded in a CMHC with psychiatric providers, counselors, and social workers to jointly address physical and behavioral health care issues and address social determinants of health.

The rationale for reverse integration

Many individuals with serious mental illness (SMI), including schizophrenia and bipolar disorder, have rates of comorbid chronic physical health conditions that are higher than in the general population. These conditions include obesity, diabetes, metabolic syndrome, cardiovascular disease, chronic obstructive pulmonary disease, HIV, viral hepatitis, and tuberculosis.² Outcomes in the SMI group are also considerably worse than in the general population. People with SMI have a demonstrated loss of up to 32 years of potential life per patient compared with the general-­population average, primarily due to poor physical health.² Maladaptive health behaviors such as poor diet, lack of physical activity, tobacco use, and substance use contribute to this increased mortality.^2,3 Social determinants of poor health are more prevalent among individuals with SMI, and a relative inability to collaborate in one’s own health care due to psychiatric symptoms further exacerbates the challenges.

Patients at a community mental health center may grow tired of conversation or feel overwhelmed in completing multiple tasks. Visits may need to be shorter and more frequent.

Many individuals with SMI receive psychiatric care, case management, counseling, and psychosocial services in CMHCs. Their psychiatric caregiver may be their only regular health care provider. Family physicians—who receive residency training in behavioral health and social determinants of health in community settings—are distinctively capable of improving overall health care outcomes of patients with SMI.

THE ADVANTAGES OF A REVERSE-INTEGRATION PRACTICE MODEL

Delivering primary care in a CMHC with a behavioral health team can benefit patients with SMI and be a satisfying practice for family physicians. Specifically, family physicians

• find that caring for complex patients can be less stressful because they benefit from the knowledge and resources of the CMHC team. The CMHC team offers case management, counseling, employment services, and housing assistance, so the primary care provider and patient are well supported.
• see fewer patients per hour due to higher visit complexity (and coding). In our experience, team-based care and additional time with patients make complex patient care more enjoyable and less frustrating.
• benefit from a situation in which patients feel safe because the CMHC support staff knows them well.

Continue to: Other benefits

Other benefits. When primary care is delivered in a CMHC, there are “huddles” and warm handoffs that allow for bidirectional collaboration and care coordination between the primary care and behavioral health teams in real time. In addition, family medicine residents, medical students, and other learners can be successfully included in an IBH clinic for patients with SMI. The behavioral health team provides the mentorship, education, and modelling of skills needed to work with this population, including limit-setting, empathy, patience, and motivational interviewing.

For their part, learners self-report increased comfort and interest in working with underserved populations and improved awareness of the social determinants of health after these experiences.^4,5 Many patients at CMHCs are comfortable working with learners if continuity is maintained with a primary care provider.

Challenges we’ve faced, tips we can offer

For primary care providers, the unique workplace culture, terminology, and patient population encountered in a CMHC can be challenging. Also challenging can be the combining of things such as electronic medical records (EMRs).

Culture. The CMHC model focuses on team-based care spearheaded by case managers, in contrast to the traditional family medicine model wherein the physician coordinates services. Case managers provide assessments of client stability and readiness to be seen. They also attend primary care visits to support patient interactions, provide important psychosocial information, and assess adherence to care.

Terminology. It’s not always easy to shift to different terminology in this culture. Thus, orientation needs to address things such as the use of the word “patient,” rather than “client,” when charting.

Continue to: The complexities of the patient population

The complexities of the patient population. Many patients treated at a CMHC have a history of trauma, anxiety, and paranoia, requiring adjustments to exam practices such as using smaller speculums, providing more physical space, and offering to leave examination room doors open while patients are waiting.

In addition, individuals with SMI often have multiple health conditions, but they may become uncomfortable with physical closeness, grow tired of conversation, or feel overwhelmed when asked to complete multiple tasks in 1 visit. As a result, visits may need to be shorter and more frequent.

It’s also worth noting that, in our experience, CMHC patients may have a higher no-show rate than typical primary care clinics, requiring flexibility in scheduling. To fill vacant primary care time slots, our front desk staff uses strategies such as waiting lists and offering walk-in visits to patients who are on site for other services.

Ideally, IBH clinics use a single, fully integrated EMR, but this is not always possible. If the primary care and CMHC EMR systems do not connect, then record review and repeat documentation is needed, while care is taken to adhere to the confidentiality standards of a particular state.

Standards of care and state policies. Written standards of care, procedures, and accreditation in CMHCs rarely include provisions for common primary care practice, such as vaccines, in-clinic medications, and implements for simple procedures. To provide these services in our clinic, we ordered/stocked the needed supplies and instituted protocols that mirrored our other outpatient family medicine clinical sites.

Continue to: Some states may have...

Some states may have policies that prevent reimbursement for mental health and primary care services billed on the same day. Seeing a family physician and a psychiatry provider on the same day is convenient for patients and allows for collaboration between providers. But reimbursement rules can vary by state, so starting an IBH clinic like this requires research into local billing regulations.

WANT TO START AN INTEGRATED BEHAVIORAL HEALTH CLINIC?

Detailed instruction on starting a primary care clinic in a CMHC is beyond the scope of this article. However, the Substance Abuse and Mental Health Services Administration provides guidance on integrating primary care services into a local CMHC.⁶ Start by performing a baseline needs assessment of the CMHC and its patients to help guide clinic design. Leadership buy-in is key.

The community mental health center model focuses on team-based care spearheaded by case managers. This contrasts with the family medicine model, in which the physician coordinates services.

Leadership must provide adequate time and financial and technological support. This includes identifying appropriate space for primary care, offering training on using the EMR, and obtaining support from Finance to develop a realistic and competent business plan with an appropriate budgetary runway for start-up. (This may include securing grants in the beginning.)

We recommend starting small and expanding slowly. Once the clinic is operational, formal pathways for good communication are necessary. This includes holding regular team meetings to develop and revise clinic workflows—eg, patient enrollment, protocols, and administrative procedures such as managing medications and vaccinations—as well as addressing space, staffing, and training issues that arise. The IBH transitional leadership structure must include clinicians from both primary care and behavioral health, support staff, and the administration. Finally, you need the right staff—people who are passionate, flexible, and interested in trying something new.

THE CASE

The next day, an outreach was made to the CMHC nurse, who had the case manager go to Mr. C’s house and bring him to the CMHC for education on insulin injection, glucometer use, and diabetes nutrition. Mr. C was prescribed long-acting insulin at bedtime; his metformin was stopped and he was monitored closely.

Continue to: Mr. C now calls...

Mr. C now calls the CMHC nurse every few weeks to report his blood sugar levels, have his insulin dose adjusted, or just say “hello.” He continues to see his psychiatrist every month and his family physician every 4 months. The team collaborates as issues arise. His diabetes has been well controlled for more than 3 years.

The IBH clinic has grown in number of patients and family medicine providers, is self-sustaining, and has expanded services to include hepatitis C treatment. 

THE CASE

John C* is a 57-year-old man with hypertension, hyperlipidemia, and schizophrenia who followed up with a psychiatrist monthly at the community mental health center (CMHC). He had no primary care doctor. His psychiatrist referred him to our new Integrated Behavioral Health (IBH) clinic, also located in the CMHC, to see a family physician for complaints of urinary frequency, blurred vision, thirst, and weight loss. An on-site fingerstick revealed his blood glucose to be 357 mg/dL. Given the presumptive diagnosis of diabetes, we checked his bloodwork, prescribed metformin, and referred him for diabetes education. That evening, his lab results showed a hemoglobin A1C > 17%, a basic metabolic panel with an anion gap, ketones in the urine, and a low C-peptide level. We were unable to reach Mr. C by phone for further management.

● How would you proceed with this patient?

* The patient’s name has been changed to protect his identity.

Coordination of behavioral health and primary care can take many forms, from simple synchronized care via referral, to co-located services, to fully integrated care.¹ Reverse integration, the subject of this article, is the provision of primary care in mental health or substance use disorder treatment settings. Published evidence to date regarding this model is minimal. This article describes our experience in developing a model of reverse integration in which family physicians and nurse practitioners are embedded in a CMHC with psychiatric providers, counselors, and social workers to jointly address physical and behavioral health care issues and address social determinants of health.

The rationale for reverse integration

Many individuals with serious mental illness (SMI), including schizophrenia and bipolar disorder, have rates of comorbid chronic physical health conditions that are higher than in the general population. These conditions include obesity, diabetes, metabolic syndrome, cardiovascular disease, chronic obstructive pulmonary disease, HIV, viral hepatitis, and tuberculosis.² Outcomes in the SMI group are also considerably worse than in the general population. People with SMI have a demonstrated loss of up to 32 years of potential life per patient compared with the general-­population average, primarily due to poor physical health.² Maladaptive health behaviors such as poor diet, lack of physical activity, tobacco use, and substance use contribute to this increased mortality.^2,3 Social determinants of poor health are more prevalent among individuals with SMI, and a relative inability to collaborate in one’s own health care due to psychiatric symptoms further exacerbates the challenges.

Patients at a community mental health center may grow tired of conversation or feel overwhelmed in completing multiple tasks. Visits may need to be shorter and more frequent.

Many individuals with SMI receive psychiatric care, case management, counseling, and psychosocial services in CMHCs. Their psychiatric caregiver may be their only regular health care provider. Family physicians—who receive residency training in behavioral health and social determinants of health in community settings—are distinctively capable of improving overall health care outcomes of patients with SMI.

THE ADVANTAGES OF A REVERSE-INTEGRATION PRACTICE MODEL

Delivering primary care in a CMHC with a behavioral health team can benefit patients with SMI and be a satisfying practice for family physicians. Specifically, family physicians

• find that caring for complex patients can be less stressful because they benefit from the knowledge and resources of the CMHC team. The CMHC team offers case management, counseling, employment services, and housing assistance, so the primary care provider and patient are well supported.
• see fewer patients per hour due to higher visit complexity (and coding). In our experience, team-based care and additional time with patients make complex patient care more enjoyable and less frustrating.
• benefit from a situation in which patients feel safe because the CMHC support staff knows them well.

Continue to: Other benefits

Other benefits. When primary care is delivered in a CMHC, there are “huddles” and warm handoffs that allow for bidirectional collaboration and care coordination between the primary care and behavioral health teams in real time. In addition, family medicine residents, medical students, and other learners can be successfully included in an IBH clinic for patients with SMI. The behavioral health team provides the mentorship, education, and modelling of skills needed to work with this population, including limit-setting, empathy, patience, and motivational interviewing.

For their part, learners self-report increased comfort and interest in working with underserved populations and improved awareness of the social determinants of health after these experiences.^4,5 Many patients at CMHCs are comfortable working with learners if continuity is maintained with a primary care provider.

Challenges we’ve faced, tips we can offer

For primary care providers, the unique workplace culture, terminology, and patient population encountered in a CMHC can be challenging. Also challenging can be the combining of things such as electronic medical records (EMRs).

Culture. The CMHC model focuses on team-based care spearheaded by case managers, in contrast to the traditional family medicine model wherein the physician coordinates services. Case managers provide assessments of client stability and readiness to be seen. They also attend primary care visits to support patient interactions, provide important psychosocial information, and assess adherence to care.

Terminology. It’s not always easy to shift to different terminology in this culture. Thus, orientation needs to address things such as the use of the word “patient,” rather than “client,” when charting.

Continue to: The complexities of the patient population

The complexities of the patient population. Many patients treated at a CMHC have a history of trauma, anxiety, and paranoia, requiring adjustments to exam practices such as using smaller speculums, providing more physical space, and offering to leave examination room doors open while patients are waiting.

In addition, individuals with SMI often have multiple health conditions, but they may become uncomfortable with physical closeness, grow tired of conversation, or feel overwhelmed when asked to complete multiple tasks in 1 visit. As a result, visits may need to be shorter and more frequent.

It’s also worth noting that, in our experience, CMHC patients may have a higher no-show rate than typical primary care clinics, requiring flexibility in scheduling. To fill vacant primary care time slots, our front desk staff uses strategies such as waiting lists and offering walk-in visits to patients who are on site for other services.

Ideally, IBH clinics use a single, fully integrated EMR, but this is not always possible. If the primary care and CMHC EMR systems do not connect, then record review and repeat documentation is needed, while care is taken to adhere to the confidentiality standards of a particular state.

Standards of care and state policies. Written standards of care, procedures, and accreditation in CMHCs rarely include provisions for common primary care practice, such as vaccines, in-clinic medications, and implements for simple procedures. To provide these services in our clinic, we ordered/stocked the needed supplies and instituted protocols that mirrored our other outpatient family medicine clinical sites.

Continue to: Some states may have...

Some states may have policies that prevent reimbursement for mental health and primary care services billed on the same day. Seeing a family physician and a psychiatry provider on the same day is convenient for patients and allows for collaboration between providers. But reimbursement rules can vary by state, so starting an IBH clinic like this requires research into local billing regulations.

WANT TO START AN INTEGRATED BEHAVIORAL HEALTH CLINIC?

Detailed instruction on starting a primary care clinic in a CMHC is beyond the scope of this article. However, the Substance Abuse and Mental Health Services Administration provides guidance on integrating primary care services into a local CMHC.⁶ Start by performing a baseline needs assessment of the CMHC and its patients to help guide clinic design. Leadership buy-in is key.

The community mental health center model focuses on team-based care spearheaded by case managers. This contrasts with the family medicine model, in which the physician coordinates services.

Leadership must provide adequate time and financial and technological support. This includes identifying appropriate space for primary care, offering training on using the EMR, and obtaining support from Finance to develop a realistic and competent business plan with an appropriate budgetary runway for start-up. (This may include securing grants in the beginning.)

We recommend starting small and expanding slowly. Once the clinic is operational, formal pathways for good communication are necessary. This includes holding regular team meetings to develop and revise clinic workflows—eg, patient enrollment, protocols, and administrative procedures such as managing medications and vaccinations—as well as addressing space, staffing, and training issues that arise. The IBH transitional leadership structure must include clinicians from both primary care and behavioral health, support staff, and the administration. Finally, you need the right staff—people who are passionate, flexible, and interested in trying something new.

THE CASE

The next day, an outreach was made to the CMHC nurse, who had the case manager go to Mr. C’s house and bring him to the CMHC for education on insulin injection, glucometer use, and diabetes nutrition. Mr. C was prescribed long-acting insulin at bedtime; his metformin was stopped and he was monitored closely.

Continue to: Mr. C now calls...

Mr. C now calls the CMHC nurse every few weeks to report his blood sugar levels, have his insulin dose adjusted, or just say “hello.” He continues to see his psychiatrist every month and his family physician every 4 months. The team collaborates as issues arise. His diabetes has been well controlled for more than 3 years.

The IBH clinic has grown in number of patients and family medicine providers, is self-sustaining, and has expanded services to include hepatitis C treatment. 

In 2015-2016, almost 40% of adults and 18.5% of children ages 2 to 19 years in the United States met the definition for obesity—a chronic, relapsing, multifactorial, neurobehavioral disease that results in adverse metabolic, biomechanical, and psychosocial health consequences.^1,2

Tremendous resources have been invested in research, policy development, and public education to try to prevent obesity and its related complications. Despite this, the obesity epidemic has worsened. Here, we explore how to evaluate and treat obese patients in a primary care setting based on the evidence and our experience seeing patients specifically for weight management in a family medicine residency teaching clinic. Pharmacotherapy and surgery, while often helpful, are outside the scope of this article.

It begins withan obesity-friendly office

Patients may have reservations about health care interactions specific to obesity, so it is important to invite them into a setting that facilitates trust and encourages collaboration. Actively engage patients with unhealthy weight by creating an environment where they feel comfortable. Offer wide chairs without armrests, which will easily accommodate patients of all sizes, and ensure that scales have a weight capacity > 400 lb. Communicate a message to patients, via waiting room materials and videos, that focuses on health rather than on weight or body mass index (BMI).

Understand the patient’s goals and challenges

Most (although not all) family physicians will see obese patients in the context of a visit for diabetes, hypertension, or another condition. However, we feel that having visits specifically to address weight in the initial stages of weight management is helpful. The focus of an initial visit should be getting to know how obesity has affected the patient and what his or her motive is in attempting to lose weight. Explore previous attempts at weight loss and establish what the patient’s highest weight has been, as this will impact weight-loss goals. For example, if a patient has weighed > 300 lb all her adult life, it will be extremely difficult to maintain a weight loss of 150 lb.

What else to ask about. Discuss stressors that may be causing increased food intake or poor food choices, including hunger, anger, loneliness, and sleep difficulties. Multidisciplinary care including a psychologist can aid in addressing these issues. Ask patients if they keep a food diary (and if not, recommend that they start), as food diaries are often helpful in elucidating eating and drinking patterns. Determine a patient’s current and past levels of physical activity, as this will guide the fitness goals you develop for him or her.

Screen for psychosocial disorders

As noted earlier, the physical component of obesity is commonly associated with mood disorders such as anxiety and depression.² This requires a multidisciplinary team effort to facilitate healing in the patient struggling with obesity.

Screening for depression and anxiety using standardized tools such as the Patient Health Questionnaire-9 or the Generalized Anxiety Disorder-7 is encouraged in patients who are overweight or obese. Positive screens should be addressed as part of the patient’s treatment plan, as untreated depression and anxiety can inhibit success with weight loss. Be mindful that many medications commonly used to treat these conditions can impair weight loss and even promote weight gain.

Continue to: Don't overlook binge-eating disorders

Don’t overlook binge-eating disorders. Screening specifically for binge-eating disorders is important, given the implications on treatment. The US Department of Veterans Affairs developed a single-item tool for this purpose, the VA Binge Eating Screener. The validated questionnaire asks, “On average, how often have you eaten extremely large amounts of food at one time and felt that your eating was out of control at that time?” Response options are: “Never,” “< 1 time/week,” “1 time/week,” “2-4 times/week,” and “5+ times/week.” A response of ≥ 2 times/week had a sensitivity of 88.9% and specificity of 83.2% for binge-eating disorder.³

For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

Patients with positive screens should undergo psychotherapy and consider pharmacotherapy with lisdexamfetamine as part of their treatment plan. Caution should be used if recommending intermittent fasting for someone with binge-eating disorder.

Evaluate for underlying causes and assess for comorbidities

Review the patient’s current medication list and history. Many medications can cause weight gain, and weight loss can often be achieved by deprescribing such medications. When feasible, prescribe an alternative medication with a more favorable weight profile. A previous article in The Journal of Family Practice addresses this in more depth.⁴

Laboratory and other testing

Laboratory analysis should primarily be focused on determining treatment alterations specific to underlying pathophysiology. Tests to consider ordering are outlined in the Table. Identification of underlying causes and/or comorbid conditions through such testing can guide medication changes, treatment choices, and diet recommendations.

Diabetes and insulin resistance. The American Diabetes Association recommends screening patients who are overweight or obese and have an additional risk factor for diabetes.⁵ This can be done by obtaining a fasting glucose level, hemoglobin A1C, or a 2-hour oral glucose tolerance test.

Continue to: Since it is known that...

Since it is known that insulin resistance increases the risk for coronary heart disease⁶ and can be treated effectively,⁷ we recommend testing for insulin resistance in patients who do not already have impaired fasting glucose, prediabetes, type 2 diabetes, or impaired glucose tolerance. The homeostatic model assessment for insulin resistance (HOMA-IR)⁸ is a measure of insulin resistance and can be calculated from the fasting insulin and fasting glucose levels. This measure should not be done in isolation, but it can be a useful adjunct in identifying patients with insulin resistance and directing treatment.

If there is evidence of diabetes or insulin resistance, consider treatment with metformin ± initiation of a low-carbohydrate diet.

Hypothyroidism. Consider screening for thyroid dysfunction with a thyroid-stimulating hormone level, if it has not been checked previously.

Renal abnormalities. When serum creatinine levels and glomerular filtration rate indicate chronic kidney disease, consider recommending a protein-restricted diet and adjust medications according to renal dosing protocols, as indicated.

Liver abnormalities, including nonalcoholic fatty liver disease (NAFLD). Monitor aspartate aminotransferase and alanine aminotransferase for resolution of elevations as weight loss is achieved. If abnormalities persist, consider ordering a liver ultrasound. Traditionally, low-calorie diets have been prescribed to treat NAFLD, but evidence shows that low-carbohydrate diets can also be effective.⁹

Continue to: Hypertriglyceridemia and low high-density lipoprotein (HDL) levels

Hypertriglyceridemia and low high-density lipoprotein (HDL) levels. Obtain a lipid panel if one has not been completed within the past several years, as hypertriglyceridemia and low HDL can improve dramatically with specific dietary changes.⁷ Observe trends to assess for resolution of lipid abnormalities as weight loss is achieved.

Gout. Consider checking a uric acid level if you are thinking about recommending a low-carbohydrate diet, particularly in patients with a history of gout, as this may temporarily increase the risk of gout flare.

Hypovitaminosis D. If the patient’s vitamin D level is low, consider appropriate supplementation to support the patient’s overall health. While vitamin D deficiency is common in obesity, the role of supplementation in this population is unclear.

Cardiovascular disease. Consider ordering an electrocardiogram, particularly if you are thinking of prescribing medication therapy. Use caution with initiation of certain medications, such as phentermine or diethylproprion, in the presence of arrhythmias or active cardiovascular disease.

Obstructive sleep apnea. Sleep health is important to address, since obesity is one of the most significant risk factors for obstructive sleep apnea.¹⁰ If your patient is given a diagnosis of OSA following a sleep study, consider treatment with continuous positive airway pressure (CPAP), although there are conflicting studies regarding the effects of CPAP therapy in OSA on weight.^11,12

Continue to: Provide guidance on lifestyle changes

Provide guidance on lifestyle changes

Addressing obesity with patients can be challenging in a busy primary care clinic, but it is imperative to helping patients achieve overall health. Counseling on nutrition and physical activity is an important part of this process.

There is no one-size-fits-all approach to nutrition counseling. Focus on creating individualized plans through which patients can achieve success. Some guidance follows, but also beware of common pitfalls that we have observed in clinical practice which, when addressed, can enable significant weight loss (see “Common pitfalls inhibiting weight loss”).

Choose an approach that works for the patient. Commonly prescribed diets to address obesity include, but are not limited to, Atkins, Dietary Approaches to Stop Hypertension (DASH), Glycemic Index, Mediterranean, Ornish, Paleolithic, Zone, whole food plant-based, and ketogenic. We attempt to engage patients in making the decision on what food choices are appropriate for them considering their food availability, culture, and belief systems. For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos.

Rather than focus on a specific diet, which may not be sustainable long term, encourage healthy eating habits. Low-­carbohydrate diets have been shown to promote greater weight loss compared to low-fat diets.^13,14 Low-calorie diets can also be quite effective in promoting short-term weight loss. In our clinic, when weight loss is the primary goal, patients are typically encouraged to focus on either calorie or carbohydrate restriction in the initial stages of weight loss.

Eliminate sugar and refined carbohydrates. While rigorous mortality data are not available, more recent trials have demonstrated significant improvements in atherosclerotic cardiovascular disease risk markers, including weight reduction and diabetes reversal, when following a diet that markedly decreases carbohydrate intake, especially sugar and refined carbohydrates.^7,14-17

Continue to: We recommend that patients focus...

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos. We also recommend substantially limiting or eliminating fruit juices and fruit smoothies due to their high sugar content. For example, 8 oz of orange juice contains 26 g of carbohydrates, which is almost as much as 8 oz of soda.

Compared with eating whole fruit, consuming fruit juice has demonstrated a small amount of weight gain in young children and adults.^18,19 It also has shown a higher insulin response compared with eating the same amount of carbohydrates in whole fruit.²⁰ Better options to drink include water, unsweetened tea, and black coffee. Also, avoid ultra-processed carbohydrates from foods such as breads, cereals, and pastries, as they have similar effects on blood glucose when compared to sugar.²¹

Greatly restrict highly processed foods. The evidence suggests that the availability of processed food is associated with increasing obesity.²² Simple advice to offer your patients is to encourage them to shop the perimeter of the grocery store, where fresh produce, meat, and dairy products are primarily located, and avoid the inner aisles, which contain primarily processed foods. Choosing food items with 5 or fewer ingredients is a starting point when teaching patients to read labels.

Consider limiting saturated fats. In 1977, the Dietary Guidelines for Americans recommended that Americans eat no more than 30% of total energy intake from fat and less than 10% of total energy intake from saturated fat; however, no randomized controlled trials had been done that supported this recommendation and epidemiologic data supporting it were weak.²³

The 2015 Dietary Guidelines continue to recommend limiting total energy intake from saturated fats.²⁴ While there may be a small decrease in cardiovascular risk with a reduction of saturated fat intake and replacement with unsaturated fats, no overall mortality benefit has been demonstrated.^24,25 More research is needed in this area to guide patients in decisions regarding consumption of saturated fats and what types of unsaturated fats are best for their health.

Continue to: Eat only 3 meals per day

Eat only 3 meals per day, but aim for fewer than that. The prescription of fasting is a modality that can be used for weight loss and improved health. Fasting has been a prescribed healing practice for thousands of years.²⁶ It is a practice that virtually every major religion in the world embraces. Studies have demonstrated fasting to be safe and effective in the setting of obesity without significant comorbidities, and it may promote weight loss and metabolic health.^26-29

There are multiple types of intermittent fasting. A practical way for patients to start is by restricting the number of hours in which they eat or drink calorie-containing beverages to 8 hours per day. In our experience, this regimen is easier for most patients to follow than alternate-day or other longer fasts. While there has been caution in the prescription of intermittent fasting due to concerns about causing eating disorders, a recent small study did not demonstrate increased risk of eating disorders with daily intermittent fasting.³⁰

Participate in healthy exercise. Nonpharmacologic office-based strategies for treating obesity have generally focused on increasing exercise and decreasing caloric intake.³¹ While exercise has significant health benefits, including preventing weight regain, evidence does not support monotherapy with exercise as an effective long-term weight-loss strategy.³² There are no studies available that adequately support prescribing an exact dose of exercise.³³ Generally, less than 150 minutes of exercise per week is not effective and more than that does have a dose-related response.³³

Follow up to help patients stay on target

There is no ideal interval for follow-up visits. However, frequent visits—anywhere from weekly to monthly—in the initial stages of weight loss increase the patient’s sense of accountability and, in our experience, seem to be helpful.

Patients may also choose to track their progress by weighing themselves regularly. A small study published in the International Journal of Obesity found that patients who weighed themselves daily had greater and more sustained weight loss than those who didn’t.³⁴ But the decision of whether to weigh one’s self at home should be individualized for each patient.

CORRESPONDENCE
Wesley Eichorn, DO, 1000 Oakland Drive, Kalamazoo, MI 49008; [email protected]

In 2015-2016, almost 40% of adults and 18.5% of children ages 2 to 19 years in the United States met the definition for obesity—a chronic, relapsing, multifactorial, neurobehavioral disease that results in adverse metabolic, biomechanical, and psychosocial health consequences.^1,2

Tremendous resources have been invested in research, policy development, and public education to try to prevent obesity and its related complications. Despite this, the obesity epidemic has worsened. Here, we explore how to evaluate and treat obese patients in a primary care setting based on the evidence and our experience seeing patients specifically for weight management in a family medicine residency teaching clinic. Pharmacotherapy and surgery, while often helpful, are outside the scope of this article.

It begins withan obesity-friendly office

Patients may have reservations about health care interactions specific to obesity, so it is important to invite them into a setting that facilitates trust and encourages collaboration. Actively engage patients with unhealthy weight by creating an environment where they feel comfortable. Offer wide chairs without armrests, which will easily accommodate patients of all sizes, and ensure that scales have a weight capacity > 400 lb. Communicate a message to patients, via waiting room materials and videos, that focuses on health rather than on weight or body mass index (BMI).

Understand the patient’s goals and challenges

Most (although not all) family physicians will see obese patients in the context of a visit for diabetes, hypertension, or another condition. However, we feel that having visits specifically to address weight in the initial stages of weight management is helpful. The focus of an initial visit should be getting to know how obesity has affected the patient and what his or her motive is in attempting to lose weight. Explore previous attempts at weight loss and establish what the patient’s highest weight has been, as this will impact weight-loss goals. For example, if a patient has weighed > 300 lb all her adult life, it will be extremely difficult to maintain a weight loss of 150 lb.

What else to ask about. Discuss stressors that may be causing increased food intake or poor food choices, including hunger, anger, loneliness, and sleep difficulties. Multidisciplinary care including a psychologist can aid in addressing these issues. Ask patients if they keep a food diary (and if not, recommend that they start), as food diaries are often helpful in elucidating eating and drinking patterns. Determine a patient’s current and past levels of physical activity, as this will guide the fitness goals you develop for him or her.

Screen for psychosocial disorders

As noted earlier, the physical component of obesity is commonly associated with mood disorders such as anxiety and depression.² This requires a multidisciplinary team effort to facilitate healing in the patient struggling with obesity.

Screening for depression and anxiety using standardized tools such as the Patient Health Questionnaire-9 or the Generalized Anxiety Disorder-7 is encouraged in patients who are overweight or obese. Positive screens should be addressed as part of the patient’s treatment plan, as untreated depression and anxiety can inhibit success with weight loss. Be mindful that many medications commonly used to treat these conditions can impair weight loss and even promote weight gain.

Continue to: Don't overlook binge-eating disorders

Don’t overlook binge-eating disorders. Screening specifically for binge-eating disorders is important, given the implications on treatment. The US Department of Veterans Affairs developed a single-item tool for this purpose, the VA Binge Eating Screener. The validated questionnaire asks, “On average, how often have you eaten extremely large amounts of food at one time and felt that your eating was out of control at that time?” Response options are: “Never,” “< 1 time/week,” “1 time/week,” “2-4 times/week,” and “5+ times/week.” A response of ≥ 2 times/week had a sensitivity of 88.9% and specificity of 83.2% for binge-eating disorder.³

For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

Patients with positive screens should undergo psychotherapy and consider pharmacotherapy with lisdexamfetamine as part of their treatment plan. Caution should be used if recommending intermittent fasting for someone with binge-eating disorder.

Evaluate for underlying causes and assess for comorbidities

Review the patient’s current medication list and history. Many medications can cause weight gain, and weight loss can often be achieved by deprescribing such medications. When feasible, prescribe an alternative medication with a more favorable weight profile. A previous article in The Journal of Family Practice addresses this in more depth.⁴

Laboratory and other testing

Laboratory analysis should primarily be focused on determining treatment alterations specific to underlying pathophysiology. Tests to consider ordering are outlined in the Table. Identification of underlying causes and/or comorbid conditions through such testing can guide medication changes, treatment choices, and diet recommendations.

Diabetes and insulin resistance. The American Diabetes Association recommends screening patients who are overweight or obese and have an additional risk factor for diabetes.⁵ This can be done by obtaining a fasting glucose level, hemoglobin A1C, or a 2-hour oral glucose tolerance test.

Continue to: Since it is known that...

Since it is known that insulin resistance increases the risk for coronary heart disease⁶ and can be treated effectively,⁷ we recommend testing for insulin resistance in patients who do not already have impaired fasting glucose, prediabetes, type 2 diabetes, or impaired glucose tolerance. The homeostatic model assessment for insulin resistance (HOMA-IR)⁸ is a measure of insulin resistance and can be calculated from the fasting insulin and fasting glucose levels. This measure should not be done in isolation, but it can be a useful adjunct in identifying patients with insulin resistance and directing treatment.

If there is evidence of diabetes or insulin resistance, consider treatment with metformin ± initiation of a low-carbohydrate diet.

Hypothyroidism. Consider screening for thyroid dysfunction with a thyroid-stimulating hormone level, if it has not been checked previously.

Renal abnormalities. When serum creatinine levels and glomerular filtration rate indicate chronic kidney disease, consider recommending a protein-restricted diet and adjust medications according to renal dosing protocols, as indicated.

Liver abnormalities, including nonalcoholic fatty liver disease (NAFLD). Monitor aspartate aminotransferase and alanine aminotransferase for resolution of elevations as weight loss is achieved. If abnormalities persist, consider ordering a liver ultrasound. Traditionally, low-calorie diets have been prescribed to treat NAFLD, but evidence shows that low-carbohydrate diets can also be effective.⁹

Continue to: Hypertriglyceridemia and low high-density lipoprotein (HDL) levels

Hypertriglyceridemia and low high-density lipoprotein (HDL) levels. Obtain a lipid panel if one has not been completed within the past several years, as hypertriglyceridemia and low HDL can improve dramatically with specific dietary changes.⁷ Observe trends to assess for resolution of lipid abnormalities as weight loss is achieved.

Gout. Consider checking a uric acid level if you are thinking about recommending a low-carbohydrate diet, particularly in patients with a history of gout, as this may temporarily increase the risk of gout flare.

Hypovitaminosis D. If the patient’s vitamin D level is low, consider appropriate supplementation to support the patient’s overall health. While vitamin D deficiency is common in obesity, the role of supplementation in this population is unclear.

Cardiovascular disease. Consider ordering an electrocardiogram, particularly if you are thinking of prescribing medication therapy. Use caution with initiation of certain medications, such as phentermine or diethylproprion, in the presence of arrhythmias or active cardiovascular disease.

Obstructive sleep apnea. Sleep health is important to address, since obesity is one of the most significant risk factors for obstructive sleep apnea.¹⁰ If your patient is given a diagnosis of OSA following a sleep study, consider treatment with continuous positive airway pressure (CPAP), although there are conflicting studies regarding the effects of CPAP therapy in OSA on weight.^11,12

Continue to: Provide guidance on lifestyle changes

Provide guidance on lifestyle changes

Addressing obesity with patients can be challenging in a busy primary care clinic, but it is imperative to helping patients achieve overall health. Counseling on nutrition and physical activity is an important part of this process.

There is no one-size-fits-all approach to nutrition counseling. Focus on creating individualized plans through which patients can achieve success. Some guidance follows, but also beware of common pitfalls that we have observed in clinical practice which, when addressed, can enable significant weight loss (see “Common pitfalls inhibiting weight loss”).

Choose an approach that works for the patient. Commonly prescribed diets to address obesity include, but are not limited to, Atkins, Dietary Approaches to Stop Hypertension (DASH), Glycemic Index, Mediterranean, Ornish, Paleolithic, Zone, whole food plant-based, and ketogenic. We attempt to engage patients in making the decision on what food choices are appropriate for them considering their food availability, culture, and belief systems. For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos.

Rather than focus on a specific diet, which may not be sustainable long term, encourage healthy eating habits. Low-­carbohydrate diets have been shown to promote greater weight loss compared to low-fat diets.^13,14 Low-calorie diets can also be quite effective in promoting short-term weight loss. In our clinic, when weight loss is the primary goal, patients are typically encouraged to focus on either calorie or carbohydrate restriction in the initial stages of weight loss.

Eliminate sugar and refined carbohydrates. While rigorous mortality data are not available, more recent trials have demonstrated significant improvements in atherosclerotic cardiovascular disease risk markers, including weight reduction and diabetes reversal, when following a diet that markedly decreases carbohydrate intake, especially sugar and refined carbohydrates.^7,14-17

Continue to: We recommend that patients focus...

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos. We also recommend substantially limiting or eliminating fruit juices and fruit smoothies due to their high sugar content. For example, 8 oz of orange juice contains 26 g of carbohydrates, which is almost as much as 8 oz of soda.

Compared with eating whole fruit, consuming fruit juice has demonstrated a small amount of weight gain in young children and adults.^18,19 It also has shown a higher insulin response compared with eating the same amount of carbohydrates in whole fruit.²⁰ Better options to drink include water, unsweetened tea, and black coffee. Also, avoid ultra-processed carbohydrates from foods such as breads, cereals, and pastries, as they have similar effects on blood glucose when compared to sugar.²¹

Greatly restrict highly processed foods. The evidence suggests that the availability of processed food is associated with increasing obesity.²² Simple advice to offer your patients is to encourage them to shop the perimeter of the grocery store, where fresh produce, meat, and dairy products are primarily located, and avoid the inner aisles, which contain primarily processed foods. Choosing food items with 5 or fewer ingredients is a starting point when teaching patients to read labels.

Consider limiting saturated fats. In 1977, the Dietary Guidelines for Americans recommended that Americans eat no more than 30% of total energy intake from fat and less than 10% of total energy intake from saturated fat; however, no randomized controlled trials had been done that supported this recommendation and epidemiologic data supporting it were weak.²³

The 2015 Dietary Guidelines continue to recommend limiting total energy intake from saturated fats.²⁴ While there may be a small decrease in cardiovascular risk with a reduction of saturated fat intake and replacement with unsaturated fats, no overall mortality benefit has been demonstrated.^24,25 More research is needed in this area to guide patients in decisions regarding consumption of saturated fats and what types of unsaturated fats are best for their health.

Continue to: Eat only 3 meals per day

Eat only 3 meals per day, but aim for fewer than that. The prescription of fasting is a modality that can be used for weight loss and improved health. Fasting has been a prescribed healing practice for thousands of years.²⁶ It is a practice that virtually every major religion in the world embraces. Studies have demonstrated fasting to be safe and effective in the setting of obesity without significant comorbidities, and it may promote weight loss and metabolic health.^26-29

There are multiple types of intermittent fasting. A practical way for patients to start is by restricting the number of hours in which they eat or drink calorie-containing beverages to 8 hours per day. In our experience, this regimen is easier for most patients to follow than alternate-day or other longer fasts. While there has been caution in the prescription of intermittent fasting due to concerns about causing eating disorders, a recent small study did not demonstrate increased risk of eating disorders with daily intermittent fasting.³⁰

Participate in healthy exercise. Nonpharmacologic office-based strategies for treating obesity have generally focused on increasing exercise and decreasing caloric intake.³¹ While exercise has significant health benefits, including preventing weight regain, evidence does not support monotherapy with exercise as an effective long-term weight-loss strategy.³² There are no studies available that adequately support prescribing an exact dose of exercise.³³ Generally, less than 150 minutes of exercise per week is not effective and more than that does have a dose-related response.³³

Follow up to help patients stay on target

There is no ideal interval for follow-up visits. However, frequent visits—anywhere from weekly to monthly—in the initial stages of weight loss increase the patient’s sense of accountability and, in our experience, seem to be helpful.

Patients may also choose to track their progress by weighing themselves regularly. A small study published in the International Journal of Obesity found that patients who weighed themselves daily had greater and more sustained weight loss than those who didn’t.³⁴ But the decision of whether to weigh one’s self at home should be individualized for each patient.

CORRESPONDENCE
Wesley Eichorn, DO, 1000 Oakland Drive, Kalamazoo, MI 49008; [email protected]

In 2015-2016, almost 40% of adults and 18.5% of children ages 2 to 19 years in the United States met the definition for obesity—a chronic, relapsing, multifactorial, neurobehavioral disease that results in adverse metabolic, biomechanical, and psychosocial health consequences.^1,2

Tremendous resources have been invested in research, policy development, and public education to try to prevent obesity and its related complications. Despite this, the obesity epidemic has worsened. Here, we explore how to evaluate and treat obese patients in a primary care setting based on the evidence and our experience seeing patients specifically for weight management in a family medicine residency teaching clinic. Pharmacotherapy and surgery, while often helpful, are outside the scope of this article.

It begins withan obesity-friendly office

Patients may have reservations about health care interactions specific to obesity, so it is important to invite them into a setting that facilitates trust and encourages collaboration. Actively engage patients with unhealthy weight by creating an environment where they feel comfortable. Offer wide chairs without armrests, which will easily accommodate patients of all sizes, and ensure that scales have a weight capacity > 400 lb. Communicate a message to patients, via waiting room materials and videos, that focuses on health rather than on weight or body mass index (BMI).

Understand the patient’s goals and challenges

Most (although not all) family physicians will see obese patients in the context of a visit for diabetes, hypertension, or another condition. However, we feel that having visits specifically to address weight in the initial stages of weight management is helpful. The focus of an initial visit should be getting to know how obesity has affected the patient and what his or her motive is in attempting to lose weight. Explore previous attempts at weight loss and establish what the patient’s highest weight has been, as this will impact weight-loss goals. For example, if a patient has weighed > 300 lb all her adult life, it will be extremely difficult to maintain a weight loss of 150 lb.

What else to ask about. Discuss stressors that may be causing increased food intake or poor food choices, including hunger, anger, loneliness, and sleep difficulties. Multidisciplinary care including a psychologist can aid in addressing these issues. Ask patients if they keep a food diary (and if not, recommend that they start), as food diaries are often helpful in elucidating eating and drinking patterns. Determine a patient’s current and past levels of physical activity, as this will guide the fitness goals you develop for him or her.

Screen for psychosocial disorders

As noted earlier, the physical component of obesity is commonly associated with mood disorders such as anxiety and depression.² This requires a multidisciplinary team effort to facilitate healing in the patient struggling with obesity.

Screening for depression and anxiety using standardized tools such as the Patient Health Questionnaire-9 or the Generalized Anxiety Disorder-7 is encouraged in patients who are overweight or obese. Positive screens should be addressed as part of the patient’s treatment plan, as untreated depression and anxiety can inhibit success with weight loss. Be mindful that many medications commonly used to treat these conditions can impair weight loss and even promote weight gain.

Continue to: Don't overlook binge-eating disorders

Don’t overlook binge-eating disorders. Screening specifically for binge-eating disorders is important, given the implications on treatment. The US Department of Veterans Affairs developed a single-item tool for this purpose, the VA Binge Eating Screener. The validated questionnaire asks, “On average, how often have you eaten extremely large amounts of food at one time and felt that your eating was out of control at that time?” Response options are: “Never,” “< 1 time/week,” “1 time/week,” “2-4 times/week,” and “5+ times/week.” A response of ≥ 2 times/week had a sensitivity of 88.9% and specificity of 83.2% for binge-eating disorder.³

For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

Patients with positive screens should undergo psychotherapy and consider pharmacotherapy with lisdexamfetamine as part of their treatment plan. Caution should be used if recommending intermittent fasting for someone with binge-eating disorder.

Evaluate for underlying causes and assess for comorbidities

Review the patient’s current medication list and history. Many medications can cause weight gain, and weight loss can often be achieved by deprescribing such medications. When feasible, prescribe an alternative medication with a more favorable weight profile. A previous article in The Journal of Family Practice addresses this in more depth.⁴

Laboratory and other testing

Laboratory analysis should primarily be focused on determining treatment alterations specific to underlying pathophysiology. Tests to consider ordering are outlined in the Table. Identification of underlying causes and/or comorbid conditions through such testing can guide medication changes, treatment choices, and diet recommendations.

Diabetes and insulin resistance. The American Diabetes Association recommends screening patients who are overweight or obese and have an additional risk factor for diabetes.⁵ This can be done by obtaining a fasting glucose level, hemoglobin A1C, or a 2-hour oral glucose tolerance test.

Continue to: Since it is known that...

Since it is known that insulin resistance increases the risk for coronary heart disease⁶ and can be treated effectively,⁷ we recommend testing for insulin resistance in patients who do not already have impaired fasting glucose, prediabetes, type 2 diabetes, or impaired glucose tolerance. The homeostatic model assessment for insulin resistance (HOMA-IR)⁸ is a measure of insulin resistance and can be calculated from the fasting insulin and fasting glucose levels. This measure should not be done in isolation, but it can be a useful adjunct in identifying patients with insulin resistance and directing treatment.

If there is evidence of diabetes or insulin resistance, consider treatment with metformin ± initiation of a low-carbohydrate diet.

Hypothyroidism. Consider screening for thyroid dysfunction with a thyroid-stimulating hormone level, if it has not been checked previously.

Renal abnormalities. When serum creatinine levels and glomerular filtration rate indicate chronic kidney disease, consider recommending a protein-restricted diet and adjust medications according to renal dosing protocols, as indicated.

Liver abnormalities, including nonalcoholic fatty liver disease (NAFLD). Monitor aspartate aminotransferase and alanine aminotransferase for resolution of elevations as weight loss is achieved. If abnormalities persist, consider ordering a liver ultrasound. Traditionally, low-calorie diets have been prescribed to treat NAFLD, but evidence shows that low-carbohydrate diets can also be effective.⁹

Continue to: Hypertriglyceridemia and low high-density lipoprotein (HDL) levels

Hypertriglyceridemia and low high-density lipoprotein (HDL) levels. Obtain a lipid panel if one has not been completed within the past several years, as hypertriglyceridemia and low HDL can improve dramatically with specific dietary changes.⁷ Observe trends to assess for resolution of lipid abnormalities as weight loss is achieved.

Gout. Consider checking a uric acid level if you are thinking about recommending a low-carbohydrate diet, particularly in patients with a history of gout, as this may temporarily increase the risk of gout flare.

Hypovitaminosis D. If the patient’s vitamin D level is low, consider appropriate supplementation to support the patient’s overall health. While vitamin D deficiency is common in obesity, the role of supplementation in this population is unclear.

Cardiovascular disease. Consider ordering an electrocardiogram, particularly if you are thinking of prescribing medication therapy. Use caution with initiation of certain medications, such as phentermine or diethylproprion, in the presence of arrhythmias or active cardiovascular disease.

Obstructive sleep apnea. Sleep health is important to address, since obesity is one of the most significant risk factors for obstructive sleep apnea.¹⁰ If your patient is given a diagnosis of OSA following a sleep study, consider treatment with continuous positive airway pressure (CPAP), although there are conflicting studies regarding the effects of CPAP therapy in OSA on weight.^11,12

Continue to: Provide guidance on lifestyle changes

Provide guidance on lifestyle changes

Addressing obesity with patients can be challenging in a busy primary care clinic, but it is imperative to helping patients achieve overall health. Counseling on nutrition and physical activity is an important part of this process.

There is no one-size-fits-all approach to nutrition counseling. Focus on creating individualized plans through which patients can achieve success. Some guidance follows, but also beware of common pitfalls that we have observed in clinical practice which, when addressed, can enable significant weight loss (see “Common pitfalls inhibiting weight loss”).

Choose an approach that works for the patient. Commonly prescribed diets to address obesity include, but are not limited to, Atkins, Dietary Approaches to Stop Hypertension (DASH), Glycemic Index, Mediterranean, Ornish, Paleolithic, Zone, whole food plant-based, and ketogenic. We attempt to engage patients in making the decision on what food choices are appropriate for them considering their food availability, culture, and belief systems. For patients who prefer a vegan or vegetarian whole food diet, it is important to note that these diets are generally deficient in vitamin B12 and omega 3 fatty acids, so supplementing these should be considered.

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos.

Rather than focus on a specific diet, which may not be sustainable long term, encourage healthy eating habits. Low-­carbohydrate diets have been shown to promote greater weight loss compared to low-fat diets.^13,14 Low-calorie diets can also be quite effective in promoting short-term weight loss. In our clinic, when weight loss is the primary goal, patients are typically encouraged to focus on either calorie or carbohydrate restriction in the initial stages of weight loss.

Eliminate sugar and refined carbohydrates. While rigorous mortality data are not available, more recent trials have demonstrated significant improvements in atherosclerotic cardiovascular disease risk markers, including weight reduction and diabetes reversal, when following a diet that markedly decreases carbohydrate intake, especially sugar and refined carbohydrates.^7,14-17

Continue to: We recommend that patients focus...

We recommend that patients focus on eliminating sweetened beverages, such as soft drinks, sports drinks, energy drinks, vitamin water, sweet tea, chocolate milk, and Frappuccinos. We also recommend substantially limiting or eliminating fruit juices and fruit smoothies due to their high sugar content. For example, 8 oz of orange juice contains 26 g of carbohydrates, which is almost as much as 8 oz of soda.

Compared with eating whole fruit, consuming fruit juice has demonstrated a small amount of weight gain in young children and adults.^18,19 It also has shown a higher insulin response compared with eating the same amount of carbohydrates in whole fruit.²⁰ Better options to drink include water, unsweetened tea, and black coffee. Also, avoid ultra-processed carbohydrates from foods such as breads, cereals, and pastries, as they have similar effects on blood glucose when compared to sugar.²¹

Greatly restrict highly processed foods. The evidence suggests that the availability of processed food is associated with increasing obesity.²² Simple advice to offer your patients is to encourage them to shop the perimeter of the grocery store, where fresh produce, meat, and dairy products are primarily located, and avoid the inner aisles, which contain primarily processed foods. Choosing food items with 5 or fewer ingredients is a starting point when teaching patients to read labels.

Consider limiting saturated fats. In 1977, the Dietary Guidelines for Americans recommended that Americans eat no more than 30% of total energy intake from fat and less than 10% of total energy intake from saturated fat; however, no randomized controlled trials had been done that supported this recommendation and epidemiologic data supporting it were weak.²³

The 2015 Dietary Guidelines continue to recommend limiting total energy intake from saturated fats.²⁴ While there may be a small decrease in cardiovascular risk with a reduction of saturated fat intake and replacement with unsaturated fats, no overall mortality benefit has been demonstrated.^24,25 More research is needed in this area to guide patients in decisions regarding consumption of saturated fats and what types of unsaturated fats are best for their health.

Continue to: Eat only 3 meals per day

Eat only 3 meals per day, but aim for fewer than that. The prescription of fasting is a modality that can be used for weight loss and improved health. Fasting has been a prescribed healing practice for thousands of years.²⁶ It is a practice that virtually every major religion in the world embraces. Studies have demonstrated fasting to be safe and effective in the setting of obesity without significant comorbidities, and it may promote weight loss and metabolic health.^26-29

There are multiple types of intermittent fasting. A practical way for patients to start is by restricting the number of hours in which they eat or drink calorie-containing beverages to 8 hours per day. In our experience, this regimen is easier for most patients to follow than alternate-day or other longer fasts. While there has been caution in the prescription of intermittent fasting due to concerns about causing eating disorders, a recent small study did not demonstrate increased risk of eating disorders with daily intermittent fasting.³⁰

Participate in healthy exercise. Nonpharmacologic office-based strategies for treating obesity have generally focused on increasing exercise and decreasing caloric intake.³¹ While exercise has significant health benefits, including preventing weight regain, evidence does not support monotherapy with exercise as an effective long-term weight-loss strategy.³² There are no studies available that adequately support prescribing an exact dose of exercise.³³ Generally, less than 150 minutes of exercise per week is not effective and more than that does have a dose-related response.³³

Follow up to help patients stay on target

There is no ideal interval for follow-up visits. However, frequent visits—anywhere from weekly to monthly—in the initial stages of weight loss increase the patient’s sense of accountability and, in our experience, seem to be helpful.

Patients may also choose to track their progress by weighing themselves regularly. A small study published in the International Journal of Obesity found that patients who weighed themselves daily had greater and more sustained weight loss than those who didn’t.³⁴ But the decision of whether to weigh one’s self at home should be individualized for each patient.

CORRESPONDENCE
Wesley Eichorn, DO, 1000 Oakland Drive, Kalamazoo, MI 49008; [email protected]

The incidence of posttransplant malignancy among solid organ transplant recipients (SOTRs) is 10%; skin cancer, primarily nonmelanoma skin cancer (NMSC), constitutes 49.5% of all malignancies in this population.¹ The etiology of the increased risk of cutaneous malignancy in SOTR is multifactorial:

• The skin of SOTRs is photosensitive, compared to that of immunocompetent patients, thus predisposing SOTRs to carcinogenic damage resulting from exposure to UV light.²
• Immunosuppression plays a key role in increasing the risk of cutaneous malignancy by inhibiting the ability of the immune system to recognize and destroy tumor cells.³
• Human papillomavirus (HPV) can play a role in carcinogenesis by promoting molecular pathways to proliferation and survival of nascent tumor cells⁴;Times New Romanβ-HPV strains are disseminated ubiquitously in the skin of immunosuppressed patients.⁵
• Some medications administered after transplantation can be directly carcinogenic.

NMSC in SOTRs also differs qualitatively from NMSC in immunocompetent patients. Cutaneous squamous cell carcinoma (cSCC) (FIGUREs 1 and 2) is the most common skin cancer among SOTRs, whereas basal cell carcinoma (BCC) is the most common skin cancer in the general population.³ cSCC in the SOTR population tends to be more aggressive, with more rapid local invasion and an increased rate of both in-transit and distant metastases, leading to an increase in morbidity and mortality. Mortality of metastatic cSCC among SOTRs is approximately 50%, compared to 20% in an otherwise healthy population.^3,6-8

The problem is relevant to primary care

Screening. Because there is a demonstrated reduction in morbidity and mortality associated with early detection and treatment of NMSC, regular screening of skin is important in the SOTR population.⁹ A study in Ontario, Canada, from 1994 to 2012 and comprising 10,183 SOTRs, found that adherence to an annual skin check regimen for ≥ 75% of the observation period was associated with a 34% reduction in cutaneous BCC- and cSCC-­related morbidity or death (adjusted hazard ratio = 0.66; 95% CI, 0.48-0.92).¹⁰ Although routine follow-up with a dermatologist is recommended for SOTRs,^9,11-15 only 2.1% of patients in the Canadian study were fully adherent with annual skin examination, and 55% never visited a dermatologist.¹⁰ Consequently, primary care physicians can play a key role in skin cancer screening for SOTRs.

Education regarding the importance of protection from the sun is also an essential part of primary care. A 2018 study of SOTRs in Turkey demonstrated that¹⁶

• 46% expressed a lack of knowledge of the hazards of sun exposure
• 44% did not recall ever receiving medical advice regarding sun protection
• 89% did not wear sun-protective clothing
• 86% did not use sunscreen daily.

Multiple studies have demonstrated the positive effect that preventive education and attendance at a dermatology or skin cancer screening clinic can have on sun-protective behaviors among SOTRs.^9,16-18 In the Turkish study, 100% of patients who reported using sunscreen daily had been undergoing regular dermatologic examination.¹⁶

In this article, we review current management guidelines regarding the prevention and treatment of NMSC in SOTRs.

Recommendations for prevention

Screening skin exams (TABLE 1^{1,11,12,15,19-23}). Although definitive guidelines do not exist regarding the frequency of a screening skin exam for SOTRs, multiple frequency-­determining algorithms have been proposed.^11,12,15,19 The recommended frequency of a skin exam is based on history of skin cancer; for SOTRs, the most common recommendation¹⁹ is a full-body skin examination as follows:

• annually—when there is no history of skin cancer
• every 6 months—when there is a history of actinic keratoses (AKs; precancerous lesions that carry a risk of transforming into cSCC) or a single low-risk NMSC
• every 3 months—when there is a history of multiple NMSCs or a single high-risk NMSC
• every 1 to 3 months—when there is a history of metastatic disease.

Continue to: Other risk factors...

Other risk factors for NMSC to consider in SOTRs when determining an appropriate follow-up regimen include any of the following^{1,20,21,24-26}:

• male gender, fair skin, history of childhood sunburn, history of smoking
• lung or heart transplantation, history of episodes of transplant rejection, age ≥ 50 years at transplantation
• immunosuppression with calcineurin inhibitors, compared to mammalian target of rapamycin (mTOR) inhibitors
• immunosuppression with cyclosporine, compared to tacrolimus
• an immunosuppressive regimen with > 1 immunosuppressant or an increased degree of immunosuppression
• antithymocyte globulin within the first year posttransplantation.

Regular screening of skin is important in the solid organ transplant population.

Because the intensity of immunosuppression and individual immunosuppressants used affect the risk of NMSC, conduct a thorough medication review with SOTRs at all visits. Ask about new, changing, or symptomatic (pruritic, painful, bleeding) skin lesions, and perform a full-body skin exam. Palpate draining lymph nodes if the patient has a history of NMSC.¹⁵ AKs (FIGURE 3) should be treated aggressively with liquid nitrogen or field therapy. Lesions suspicious for NMSC should be biopsied and sent for histologic evaluation.²² Shave, punch, and excisional biopsies are all adequate techniques; however, because all cSCCs in SOTRs are considered high risk for aggressive features, biopsy should extend at least into the reticular dermis to allow evaluation for invasive disease.²²

Sun-protective measures (TABLE 1^{1,11,12,15,19-23}). Inquire about patients’ habits related to protection from the sun, their knowledge of recommended sun-protective measures, and risks associated with nonadherence. Recommended sun-protective measures include

• daily broad-spectrum sunscreen (SPF ≥ 30), reapplied every 2 hours of sun exposure, in accordance with labeling instructions²³
• sun-protective clothing (pants, long sleeves, hat, sunglasses)²³
• avoidance of tanning salons.¹⁵

SOTRs who adequately adhere to sun-protective measures might need vitamin D supplementation because sunscreen and sun-protective clothing inhibit cutaneous synthesis of vitamin D.¹⁵

Recommendations for treatment

Consider chemoprophylactic therapy for SOTRs who have had multiple prior cutaneous malignancies or multiple AKs.

Continue to: Topical chemoprophylaxis

Topical medications used for cSCC chemoprophylaxis include 5-fluorouracil (5-FU), photodynamic therapy (PDT), imiquimod, ingenol mebutate, topical retinoids, and diclofenac.²⁷ (See TABLE 2.^27-40) Of these, the latter 3 are used less commonly because of the small packaging size of ingenol mebutate and the relative lack of efficacy data for topical retinoids and diclofenac.²⁷ Imiquimod is often avoided when treating large surface areas because of the risk of systemic adverse effects associated with cytokine release.²⁷

5-FU is US Food and Drug Administration (FDA)-approved for the treatment of AKs, and is used off-label for treating cSCC in situ (Bowen disease). It is the most commonly used topical therapy for field disease.^27-29 5-FU is typically applied once or twice daily for 3 to 4 weeks. Common adverse effects include transient skin irritation and erythema.²⁷