Don’t trust interface dermatitis to diagnose dermatomyositis

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Dermatologists and rheumatologists are mistaken if they think interface dermatitis is the sine qua non biopsy finding of dermatomyositis (DM), according to David Fiorentino, MD, PhD, professor of dermatology, rheumatology, and immunology at Stanford (Calif.) University.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

Interface dermatitis on skin biopsy is “felt to be almost required by many people to make the diagnosis,” but he and his associates found that it was not present in about a quarter of a cohort of patients with DM. “We don’t want a clinician” to rule out the diagnosis based on its absence on a biopsy, “when its actually quite possible that the patient could have disease,” Dr. Fiorentino said at the International Conference on Cutaneous Lupus Erythematosus.

In general, skin biopsies in DM are tricky. “All of us take them, but we don’t really know how to interpret the information that comes back ... because we don’t really know how often many of [the associated] findings are seen” in DM patients, he noted.

One of the main concerns is to rule out lupus, but interface dermatitis is found in many of its cutaneous forms, as well as in graft-versus-host disease and other diseases.

So what’s a clinician to do? Fortunately, direct immunofluorescence can help. A positive lupus band test helps rule out DM, and the membrane attack complex helps rule it in, both with a good degree of certainty. In a video interview, Dr. Fiorentino explained these tests and how to use them.

Dr. Fiorentino had no relevant disclosures.

[email protected]

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Dermatologists and rheumatologists are mistaken if they think interface dermatitis is the sine qua non biopsy finding of dermatomyositis (DM), according to David Fiorentino, MD, PhD, professor of dermatology, rheumatology, and immunology at Stanford (Calif.) University.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

Interface dermatitis on skin biopsy is “felt to be almost required by many people to make the diagnosis,” but he and his associates found that it was not present in about a quarter of a cohort of patients with DM. “We don’t want a clinician” to rule out the diagnosis based on its absence on a biopsy, “when its actually quite possible that the patient could have disease,” Dr. Fiorentino said at the International Conference on Cutaneous Lupus Erythematosus.

In general, skin biopsies in DM are tricky. “All of us take them, but we don’t really know how to interpret the information that comes back ... because we don’t really know how often many of [the associated] findings are seen” in DM patients, he noted.

One of the main concerns is to rule out lupus, but interface dermatitis is found in many of its cutaneous forms, as well as in graft-versus-host disease and other diseases.

So what’s a clinician to do? Fortunately, direct immunofluorescence can help. A positive lupus band test helps rule out DM, and the membrane attack complex helps rule it in, both with a good degree of certainty. In a video interview, Dr. Fiorentino explained these tests and how to use them.

Dr. Fiorentino had no relevant disclosures.

[email protected]

 

Dermatologists and rheumatologists are mistaken if they think interface dermatitis is the sine qua non biopsy finding of dermatomyositis (DM), according to David Fiorentino, MD, PhD, professor of dermatology, rheumatology, and immunology at Stanford (Calif.) University.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

Interface dermatitis on skin biopsy is “felt to be almost required by many people to make the diagnosis,” but he and his associates found that it was not present in about a quarter of a cohort of patients with DM. “We don’t want a clinician” to rule out the diagnosis based on its absence on a biopsy, “when its actually quite possible that the patient could have disease,” Dr. Fiorentino said at the International Conference on Cutaneous Lupus Erythematosus.

In general, skin biopsies in DM are tricky. “All of us take them, but we don’t really know how to interpret the information that comes back ... because we don’t really know how often many of [the associated] findings are seen” in DM patients, he noted.

One of the main concerns is to rule out lupus, but interface dermatitis is found in many of its cutaneous forms, as well as in graft-versus-host disease and other diseases.

So what’s a clinician to do? Fortunately, direct immunofluorescence can help. A positive lupus band test helps rule out DM, and the membrane attack complex helps rule it in, both with a good degree of certainty. In a video interview, Dr. Fiorentino explained these tests and how to use them.

Dr. Fiorentino had no relevant disclosures.

[email protected]

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REPORTING FROM ICCLE 2018

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Inside the complex, surprising world of MS comorbidities

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– Recent research into comorbidities in multiple sclerosis – including head-scratching findings about lower cancer rates – is shedding light on the links between the disease and other illnesses, according to an epidemiologist specializing in MS.

“People should be mindful that if they look at having a positive impact on those comorbidities, they may have the ability to benefit patients in context of their MS,” Helen Tremlett, PhD, said in a video interview at the annual meeting of the Consortium of Multiple Sclerosis Centers. She is the Canada Research Chair in Neuroepidemiology and Multiple Sclerosis at the University of British Columbia, Vancouver.

In recent years, research into comorbidities in MS has risen dramatically. Dr. Tremlett found that the number of papers per year in PubMed that address MS and comorbidity has risen from roughly 30 in 2007 to about 80 in 2015, although the numbers dipped to about 50 and 60, respectively, in 2016 and 2017.

A 2015 systematic review of research into MS and comorbidities reported that while “findings were inconsistent overall,” studies suggested that “meningiomas and possibly urinary system cancers, inflammatory bowel disease, irritable bowel syndrome, epilepsy, depression, anxiety, bipolar disorder, early cataracts, and restless legs syndrome were more common than expected in the MS population.” (Mult Scler. 2015 Mar;21[3]:263-81).

Notably, most cancers are missing from this list. In fact, Dr. Tremlett cowrote a 2012 study that found lower risks of all cancers and several specific types of cancer – breast, lung, colorectal, prostate, and melanoma – in MS patients, compared with age- and gender-matched controls (Brain. 2012 Oct;135[Pt 10]:2973-9).

According to Dr. Tremlett, there are several theories about the apparent lower cancer risk in patients with MS. Perhaps their immune systems are hypervigilant, or maybe MS diagnoses inspire healthier lifestyles.

 

 


Researchers have been intrigued by another possibility – that cancer diagnoses are being delayed in patients with MS. Indeed, the 2012 study found that tumor sizes at diagnosis in patients with MS were larger than expected in breast, prostate, lung, and colorectal cancer (P = .04).

“We couldn’t record why that’s the case, but there may be some so-called ‘diagnostic neglect,’ ” she said. “You could imagine a scenario where a typical person with MS goes to see their physician and says, ‘I’m tired. I have fatigue,’ and the physician says, ‘Yes, you have MS, that’s what you should expect.’ Someone in the general population might get additional investigation, get blood work done, and their cancer might be found earlier.”

It’s also possible, she said, that cancer isn’t picked up earlier because it can be difficult to screen people with disabilities. “It’s only recently that physicians can offer the Pap smear to women in a wheelchair.”

On another front, there’s evidence linking comorbidities to worsening MS. A 2018 study coauthored by Dr. Tremlett found that patients with more comorbidities had more disability. Specifically, ischemic heart disease and epilepsy were associated with greater Expanded Disability Status Scale scores (Neurology. 2018 Jan 3. doi: 10.1212/WNL.0000000000004885).

 

 


Other research coauthored by Dr. Tremlett has linked comorbidities in MS – specifically, hyperlipidemia, migraine, and three or more comorbidities – to higher risk of MS relapse (Neurology. 2017 Dec 12;89[24]:2455-61).

Dr. Tremlett reported having no relevant disclosures.

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– Recent research into comorbidities in multiple sclerosis – including head-scratching findings about lower cancer rates – is shedding light on the links between the disease and other illnesses, according to an epidemiologist specializing in MS.

“People should be mindful that if they look at having a positive impact on those comorbidities, they may have the ability to benefit patients in context of their MS,” Helen Tremlett, PhD, said in a video interview at the annual meeting of the Consortium of Multiple Sclerosis Centers. She is the Canada Research Chair in Neuroepidemiology and Multiple Sclerosis at the University of British Columbia, Vancouver.

In recent years, research into comorbidities in MS has risen dramatically. Dr. Tremlett found that the number of papers per year in PubMed that address MS and comorbidity has risen from roughly 30 in 2007 to about 80 in 2015, although the numbers dipped to about 50 and 60, respectively, in 2016 and 2017.

A 2015 systematic review of research into MS and comorbidities reported that while “findings were inconsistent overall,” studies suggested that “meningiomas and possibly urinary system cancers, inflammatory bowel disease, irritable bowel syndrome, epilepsy, depression, anxiety, bipolar disorder, early cataracts, and restless legs syndrome were more common than expected in the MS population.” (Mult Scler. 2015 Mar;21[3]:263-81).

Notably, most cancers are missing from this list. In fact, Dr. Tremlett cowrote a 2012 study that found lower risks of all cancers and several specific types of cancer – breast, lung, colorectal, prostate, and melanoma – in MS patients, compared with age- and gender-matched controls (Brain. 2012 Oct;135[Pt 10]:2973-9).

According to Dr. Tremlett, there are several theories about the apparent lower cancer risk in patients with MS. Perhaps their immune systems are hypervigilant, or maybe MS diagnoses inspire healthier lifestyles.

 

 


Researchers have been intrigued by another possibility – that cancer diagnoses are being delayed in patients with MS. Indeed, the 2012 study found that tumor sizes at diagnosis in patients with MS were larger than expected in breast, prostate, lung, and colorectal cancer (P = .04).

“We couldn’t record why that’s the case, but there may be some so-called ‘diagnostic neglect,’ ” she said. “You could imagine a scenario where a typical person with MS goes to see their physician and says, ‘I’m tired. I have fatigue,’ and the physician says, ‘Yes, you have MS, that’s what you should expect.’ Someone in the general population might get additional investigation, get blood work done, and their cancer might be found earlier.”

It’s also possible, she said, that cancer isn’t picked up earlier because it can be difficult to screen people with disabilities. “It’s only recently that physicians can offer the Pap smear to women in a wheelchair.”

On another front, there’s evidence linking comorbidities to worsening MS. A 2018 study coauthored by Dr. Tremlett found that patients with more comorbidities had more disability. Specifically, ischemic heart disease and epilepsy were associated with greater Expanded Disability Status Scale scores (Neurology. 2018 Jan 3. doi: 10.1212/WNL.0000000000004885).

 

 


Other research coauthored by Dr. Tremlett has linked comorbidities in MS – specifically, hyperlipidemia, migraine, and three or more comorbidities – to higher risk of MS relapse (Neurology. 2017 Dec 12;89[24]:2455-61).

Dr. Tremlett reported having no relevant disclosures.

– Recent research into comorbidities in multiple sclerosis – including head-scratching findings about lower cancer rates – is shedding light on the links between the disease and other illnesses, according to an epidemiologist specializing in MS.

“People should be mindful that if they look at having a positive impact on those comorbidities, they may have the ability to benefit patients in context of their MS,” Helen Tremlett, PhD, said in a video interview at the annual meeting of the Consortium of Multiple Sclerosis Centers. She is the Canada Research Chair in Neuroepidemiology and Multiple Sclerosis at the University of British Columbia, Vancouver.

In recent years, research into comorbidities in MS has risen dramatically. Dr. Tremlett found that the number of papers per year in PubMed that address MS and comorbidity has risen from roughly 30 in 2007 to about 80 in 2015, although the numbers dipped to about 50 and 60, respectively, in 2016 and 2017.

A 2015 systematic review of research into MS and comorbidities reported that while “findings were inconsistent overall,” studies suggested that “meningiomas and possibly urinary system cancers, inflammatory bowel disease, irritable bowel syndrome, epilepsy, depression, anxiety, bipolar disorder, early cataracts, and restless legs syndrome were more common than expected in the MS population.” (Mult Scler. 2015 Mar;21[3]:263-81).

Notably, most cancers are missing from this list. In fact, Dr. Tremlett cowrote a 2012 study that found lower risks of all cancers and several specific types of cancer – breast, lung, colorectal, prostate, and melanoma – in MS patients, compared with age- and gender-matched controls (Brain. 2012 Oct;135[Pt 10]:2973-9).

According to Dr. Tremlett, there are several theories about the apparent lower cancer risk in patients with MS. Perhaps their immune systems are hypervigilant, or maybe MS diagnoses inspire healthier lifestyles.

 

 


Researchers have been intrigued by another possibility – that cancer diagnoses are being delayed in patients with MS. Indeed, the 2012 study found that tumor sizes at diagnosis in patients with MS were larger than expected in breast, prostate, lung, and colorectal cancer (P = .04).

“We couldn’t record why that’s the case, but there may be some so-called ‘diagnostic neglect,’ ” she said. “You could imagine a scenario where a typical person with MS goes to see their physician and says, ‘I’m tired. I have fatigue,’ and the physician says, ‘Yes, you have MS, that’s what you should expect.’ Someone in the general population might get additional investigation, get blood work done, and their cancer might be found earlier.”

It’s also possible, she said, that cancer isn’t picked up earlier because it can be difficult to screen people with disabilities. “It’s only recently that physicians can offer the Pap smear to women in a wheelchair.”

On another front, there’s evidence linking comorbidities to worsening MS. A 2018 study coauthored by Dr. Tremlett found that patients with more comorbidities had more disability. Specifically, ischemic heart disease and epilepsy were associated with greater Expanded Disability Status Scale scores (Neurology. 2018 Jan 3. doi: 10.1212/WNL.0000000000004885).

 

 


Other research coauthored by Dr. Tremlett has linked comorbidities in MS – specifically, hyperlipidemia, migraine, and three or more comorbidities – to higher risk of MS relapse (Neurology. 2017 Dec 12;89[24]:2455-61).

Dr. Tremlett reported having no relevant disclosures.

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EXPERT ANALYSIS FROM THE CMSC ANNUAL MEETING

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Value-based care spawns new challenges for MS physicians

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– Jeffrey B. English, MD, of the MS Center of Atlanta, knows which quality measures physicians and their patients with multiple sclerosis think are important. After all, he and his colleagues have surveyed them about that very topic.

But he has little time to monitor these measures since he’s too busy with a more overwhelming task: keeping track of unrelated quality measures as required by the federal government.

“When they developed quality measures under the MACRA law, they were not thinking about MS people in general. They were very primary care based,” Dr. English said in an interview at the annual meeting of the Consortium of Multiple Sclerosis Centers.

In terms of MS, he said, “no one really knows what the correct outcome measures are.”

Dr. English knows more than most about quality measures preferred by neurologists and patients. At the annual CMSC meeting last year, he presented results from a survey of 11 physicians and 423 patients about the measures of care they consider most important. The patient survey asked about several measures recommended by the American Academy of Neurology plus other measures recommended by the physicians.

The two groups – physicians and patients – agreed on the top four measures: change observed via MRI, change observed via exam, quality of life, and fatigue. However, they disagreed on the ranking within the top four spots.

The least important measures for patients were exercise levels, depression, medication compliance, and relapses.

 

 


Dr. English wants to “be able to follow what the patients want me to follow.” However, he hasn’t been able to do so since “25% of my time with patients, in between patients and after hours, is spent trying to comply with outcome measures from the new health care system that are of no benefit to the patient,” he said.

He’s referring to the quality measures that many physicians are tracking to get reimbursed by Medicare and Medicaid.



Value-based care posts other challenges for MS physicians, he said, since MS care is especially expensive. Accountable Care Organizations are looking at cost savings in closed systems, he said, and that could spell trouble because patients with MS cost more.

As a 2015 report noted, first-generation disease-modifying therapies (DMTs) for MS cost about $60,000, and “costs for these agents have increased annually at rates 5 to 7 times higher than prescription drug inflation. Newer DMTs commonly entered the market with a cost 25%-60% higher than existing DMTs” (Neurology. 2015 May 26;84[21]:2185-92).

 

 


“If I’m in an ACO, and I’m taking care of a lot of MS patients, I’ll already lose money for the accountable care system,” Dr. English said. “They may not necessarily want an MS center inside an ACO.”

What can doctors do? “Advocacy efforts are pretty difficult for physicians,” Dr. English said. “Our hope is that the CMSC will be a clearinghouse for doctors who have ideas and efforts and advocacy, and somehow channel that into the actual provision of care. You have people advocating for medications and for research and for patients, but there’s nobody advocating for the actual care that’s going on, the boots-on-the-ground care. That’s where CMSC should play a big role.”

Dr. English disclosed that he has served as a consultant for multiple pharmaceutical companies.

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– Jeffrey B. English, MD, of the MS Center of Atlanta, knows which quality measures physicians and their patients with multiple sclerosis think are important. After all, he and his colleagues have surveyed them about that very topic.

But he has little time to monitor these measures since he’s too busy with a more overwhelming task: keeping track of unrelated quality measures as required by the federal government.

“When they developed quality measures under the MACRA law, they were not thinking about MS people in general. They were very primary care based,” Dr. English said in an interview at the annual meeting of the Consortium of Multiple Sclerosis Centers.

In terms of MS, he said, “no one really knows what the correct outcome measures are.”

Dr. English knows more than most about quality measures preferred by neurologists and patients. At the annual CMSC meeting last year, he presented results from a survey of 11 physicians and 423 patients about the measures of care they consider most important. The patient survey asked about several measures recommended by the American Academy of Neurology plus other measures recommended by the physicians.

The two groups – physicians and patients – agreed on the top four measures: change observed via MRI, change observed via exam, quality of life, and fatigue. However, they disagreed on the ranking within the top four spots.

The least important measures for patients were exercise levels, depression, medication compliance, and relapses.

 

 


Dr. English wants to “be able to follow what the patients want me to follow.” However, he hasn’t been able to do so since “25% of my time with patients, in between patients and after hours, is spent trying to comply with outcome measures from the new health care system that are of no benefit to the patient,” he said.

He’s referring to the quality measures that many physicians are tracking to get reimbursed by Medicare and Medicaid.



Value-based care posts other challenges for MS physicians, he said, since MS care is especially expensive. Accountable Care Organizations are looking at cost savings in closed systems, he said, and that could spell trouble because patients with MS cost more.

As a 2015 report noted, first-generation disease-modifying therapies (DMTs) for MS cost about $60,000, and “costs for these agents have increased annually at rates 5 to 7 times higher than prescription drug inflation. Newer DMTs commonly entered the market with a cost 25%-60% higher than existing DMTs” (Neurology. 2015 May 26;84[21]:2185-92).

 

 


“If I’m in an ACO, and I’m taking care of a lot of MS patients, I’ll already lose money for the accountable care system,” Dr. English said. “They may not necessarily want an MS center inside an ACO.”

What can doctors do? “Advocacy efforts are pretty difficult for physicians,” Dr. English said. “Our hope is that the CMSC will be a clearinghouse for doctors who have ideas and efforts and advocacy, and somehow channel that into the actual provision of care. You have people advocating for medications and for research and for patients, but there’s nobody advocating for the actual care that’s going on, the boots-on-the-ground care. That’s where CMSC should play a big role.”

Dr. English disclosed that he has served as a consultant for multiple pharmaceutical companies.

– Jeffrey B. English, MD, of the MS Center of Atlanta, knows which quality measures physicians and their patients with multiple sclerosis think are important. After all, he and his colleagues have surveyed them about that very topic.

But he has little time to monitor these measures since he’s too busy with a more overwhelming task: keeping track of unrelated quality measures as required by the federal government.

“When they developed quality measures under the MACRA law, they were not thinking about MS people in general. They were very primary care based,” Dr. English said in an interview at the annual meeting of the Consortium of Multiple Sclerosis Centers.

In terms of MS, he said, “no one really knows what the correct outcome measures are.”

Dr. English knows more than most about quality measures preferred by neurologists and patients. At the annual CMSC meeting last year, he presented results from a survey of 11 physicians and 423 patients about the measures of care they consider most important. The patient survey asked about several measures recommended by the American Academy of Neurology plus other measures recommended by the physicians.

The two groups – physicians and patients – agreed on the top four measures: change observed via MRI, change observed via exam, quality of life, and fatigue. However, they disagreed on the ranking within the top four spots.

The least important measures for patients were exercise levels, depression, medication compliance, and relapses.

 

 


Dr. English wants to “be able to follow what the patients want me to follow.” However, he hasn’t been able to do so since “25% of my time with patients, in between patients and after hours, is spent trying to comply with outcome measures from the new health care system that are of no benefit to the patient,” he said.

He’s referring to the quality measures that many physicians are tracking to get reimbursed by Medicare and Medicaid.



Value-based care posts other challenges for MS physicians, he said, since MS care is especially expensive. Accountable Care Organizations are looking at cost savings in closed systems, he said, and that could spell trouble because patients with MS cost more.

As a 2015 report noted, first-generation disease-modifying therapies (DMTs) for MS cost about $60,000, and “costs for these agents have increased annually at rates 5 to 7 times higher than prescription drug inflation. Newer DMTs commonly entered the market with a cost 25%-60% higher than existing DMTs” (Neurology. 2015 May 26;84[21]:2185-92).

 

 


“If I’m in an ACO, and I’m taking care of a lot of MS patients, I’ll already lose money for the accountable care system,” Dr. English said. “They may not necessarily want an MS center inside an ACO.”

What can doctors do? “Advocacy efforts are pretty difficult for physicians,” Dr. English said. “Our hope is that the CMSC will be a clearinghouse for doctors who have ideas and efforts and advocacy, and somehow channel that into the actual provision of care. You have people advocating for medications and for research and for patients, but there’s nobody advocating for the actual care that’s going on, the boots-on-the-ground care. That’s where CMSC should play a big role.”

Dr. English disclosed that he has served as a consultant for multiple pharmaceutical companies.

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REPORTING FROM THE CMSC ANNUAL MEETING

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iPad app puts cognitive screening in the hands of MS patients

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– A new computer tablet application puts cognitive screening literally in the hands of patients with multiple sclerosis.

The Multiple Sclerosis Performance Test (MSPT), created specifically for iPad, presents patients with four assessments that they can complete in a short time before any clinic visit, according to Stephen M. Rao, PhD, who helped develop the tool. After patients complete the test battery, the program translates their results into adjusted normative data and feeds them directly into the individual electronic medical record. When the clinic visit begins, everything is ready for the physician and patient to review together. The program not only provides a solid baseline assessment, but can also, over time, create a longitudinal profile of a patient’s cognitive status, and help to guide management decisions, Dr. Rao said at the annual meeting of the Consortium of Multiple Sclerosis Centers.


“About half of people with MS do have cognitive problems, which, above and beyond the physical problems, can result in major challenges with work, the ability to engage in social activities, and the need for personal assistance,” said Dr. Rao, who is the Ralph and Luci Schey Chair and director of the Schey Center for Cognitive Neuroimaging at the Cleveland Clinic. “But despite that, even comprehensive MS care centers rarely screen for cognitive dysfunction using objective neuropsychological tests.”

Time is the issue for most clinics, he said. Although the paper-and-pencil screening tools out there take only 10 minutes or so, most centers don’t have the luxury of carving out those extra moments or dedicating a staff member to administer the test and handle the data.

The MSPT attempts to sidestep the problem of time and manpower. In Dr. Rao’s center and the other 10 in the United States and Europe that now use the tool, patients simply arrive a bit early for their appointment and complete the three components: a structured patient history; the Neurological Quality of Life assessment; and an electronic adaptation of the MS Functional Composite.

It assesses cognition with a processing speed test based on the Symbol Digit Modalities Test, which has long been validated for MS patients. A contrast sensitivity test assesses visual acuity. A simple manual-dexterity test, in which patients move peg symbols into “holes,” tests upper extremity function, and a video-recorded walking speed test assesses lower extremity function.

The system was validated in 165 patients with MS and 217 healthy controls. It correlated well with the paper-and-pencil Symbol Digits Modalities Test, and correlated more highly than that test with cerebral T2 lesion load (MS Journal. 2017;23:1929-37).

 

 


The MSPT is part of a Biogen-sponsored project that Dr. Rao and colleagues unveiled at the American Academy of Neurology annual meeting in April, called the Multiple Sclerosis Partners Advancing Technology and Health Solutions (MS PATHS). It will gather longitudinal data on 11,000 patients using the MSPT program, and correlate it to multiple clinical and socioeconomic outcomes, Dr. Rao said.

The processing speed test portion of MS PATHS isn’t only available to PATHS centers, he added. Any clinician can obtain it by simply registering with Biogen and downloading the standalone version, which is called CogEval.

After downloading, the clinician must register with Biogen, which then will email a code to unlock the program. CogEval can be used on any iPad system that runs iOS 11 or higher. Results don’t get uploaded automatically into an EHR, but they can be entered manually or printed.

Dr. Rao disclosed that he received financial support from Biogen for the research and development of the MSPT program.

SOURCE: Rao SM et al. CMSC 2018. doi: 10.1177/1352458516688955

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– A new computer tablet application puts cognitive screening literally in the hands of patients with multiple sclerosis.

The Multiple Sclerosis Performance Test (MSPT), created specifically for iPad, presents patients with four assessments that they can complete in a short time before any clinic visit, according to Stephen M. Rao, PhD, who helped develop the tool. After patients complete the test battery, the program translates their results into adjusted normative data and feeds them directly into the individual electronic medical record. When the clinic visit begins, everything is ready for the physician and patient to review together. The program not only provides a solid baseline assessment, but can also, over time, create a longitudinal profile of a patient’s cognitive status, and help to guide management decisions, Dr. Rao said at the annual meeting of the Consortium of Multiple Sclerosis Centers.


“About half of people with MS do have cognitive problems, which, above and beyond the physical problems, can result in major challenges with work, the ability to engage in social activities, and the need for personal assistance,” said Dr. Rao, who is the Ralph and Luci Schey Chair and director of the Schey Center for Cognitive Neuroimaging at the Cleveland Clinic. “But despite that, even comprehensive MS care centers rarely screen for cognitive dysfunction using objective neuropsychological tests.”

Time is the issue for most clinics, he said. Although the paper-and-pencil screening tools out there take only 10 minutes or so, most centers don’t have the luxury of carving out those extra moments or dedicating a staff member to administer the test and handle the data.

The MSPT attempts to sidestep the problem of time and manpower. In Dr. Rao’s center and the other 10 in the United States and Europe that now use the tool, patients simply arrive a bit early for their appointment and complete the three components: a structured patient history; the Neurological Quality of Life assessment; and an electronic adaptation of the MS Functional Composite.

It assesses cognition with a processing speed test based on the Symbol Digit Modalities Test, which has long been validated for MS patients. A contrast sensitivity test assesses visual acuity. A simple manual-dexterity test, in which patients move peg symbols into “holes,” tests upper extremity function, and a video-recorded walking speed test assesses lower extremity function.

The system was validated in 165 patients with MS and 217 healthy controls. It correlated well with the paper-and-pencil Symbol Digits Modalities Test, and correlated more highly than that test with cerebral T2 lesion load (MS Journal. 2017;23:1929-37).

 

 


The MSPT is part of a Biogen-sponsored project that Dr. Rao and colleagues unveiled at the American Academy of Neurology annual meeting in April, called the Multiple Sclerosis Partners Advancing Technology and Health Solutions (MS PATHS). It will gather longitudinal data on 11,000 patients using the MSPT program, and correlate it to multiple clinical and socioeconomic outcomes, Dr. Rao said.

The processing speed test portion of MS PATHS isn’t only available to PATHS centers, he added. Any clinician can obtain it by simply registering with Biogen and downloading the standalone version, which is called CogEval.

After downloading, the clinician must register with Biogen, which then will email a code to unlock the program. CogEval can be used on any iPad system that runs iOS 11 or higher. Results don’t get uploaded automatically into an EHR, but they can be entered manually or printed.

Dr. Rao disclosed that he received financial support from Biogen for the research and development of the MSPT program.

SOURCE: Rao SM et al. CMSC 2018. doi: 10.1177/1352458516688955

– A new computer tablet application puts cognitive screening literally in the hands of patients with multiple sclerosis.

The Multiple Sclerosis Performance Test (MSPT), created specifically for iPad, presents patients with four assessments that they can complete in a short time before any clinic visit, according to Stephen M. Rao, PhD, who helped develop the tool. After patients complete the test battery, the program translates their results into adjusted normative data and feeds them directly into the individual electronic medical record. When the clinic visit begins, everything is ready for the physician and patient to review together. The program not only provides a solid baseline assessment, but can also, over time, create a longitudinal profile of a patient’s cognitive status, and help to guide management decisions, Dr. Rao said at the annual meeting of the Consortium of Multiple Sclerosis Centers.


“About half of people with MS do have cognitive problems, which, above and beyond the physical problems, can result in major challenges with work, the ability to engage in social activities, and the need for personal assistance,” said Dr. Rao, who is the Ralph and Luci Schey Chair and director of the Schey Center for Cognitive Neuroimaging at the Cleveland Clinic. “But despite that, even comprehensive MS care centers rarely screen for cognitive dysfunction using objective neuropsychological tests.”

Time is the issue for most clinics, he said. Although the paper-and-pencil screening tools out there take only 10 minutes or so, most centers don’t have the luxury of carving out those extra moments or dedicating a staff member to administer the test and handle the data.

The MSPT attempts to sidestep the problem of time and manpower. In Dr. Rao’s center and the other 10 in the United States and Europe that now use the tool, patients simply arrive a bit early for their appointment and complete the three components: a structured patient history; the Neurological Quality of Life assessment; and an electronic adaptation of the MS Functional Composite.

It assesses cognition with a processing speed test based on the Symbol Digit Modalities Test, which has long been validated for MS patients. A contrast sensitivity test assesses visual acuity. A simple manual-dexterity test, in which patients move peg symbols into “holes,” tests upper extremity function, and a video-recorded walking speed test assesses lower extremity function.

The system was validated in 165 patients with MS and 217 healthy controls. It correlated well with the paper-and-pencil Symbol Digits Modalities Test, and correlated more highly than that test with cerebral T2 lesion load (MS Journal. 2017;23:1929-37).

 

 


The MSPT is part of a Biogen-sponsored project that Dr. Rao and colleagues unveiled at the American Academy of Neurology annual meeting in April, called the Multiple Sclerosis Partners Advancing Technology and Health Solutions (MS PATHS). It will gather longitudinal data on 11,000 patients using the MSPT program, and correlate it to multiple clinical and socioeconomic outcomes, Dr. Rao said.

The processing speed test portion of MS PATHS isn’t only available to PATHS centers, he added. Any clinician can obtain it by simply registering with Biogen and downloading the standalone version, which is called CogEval.

After downloading, the clinician must register with Biogen, which then will email a code to unlock the program. CogEval can be used on any iPad system that runs iOS 11 or higher. Results don’t get uploaded automatically into an EHR, but they can be entered manually or printed.

Dr. Rao disclosed that he received financial support from Biogen for the research and development of the MSPT program.

SOURCE: Rao SM et al. CMSC 2018. doi: 10.1177/1352458516688955

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How more midwives may mean healthier mothers

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Since ProPublica launched Lost Mothers, we’ve covered many facets of the U.S. maternal mortality crisis. Despite spending more per capita on health care than any other country, the U.S. has the highest rate of deaths related to pregnancy and childbirth in the industrialized world.

Source: Vox and ProPublica

But what makes maternal health care in other affluent countries look so different than the U.S.? Among other things, midwives. Midwives in the U.S. participate in less than 10 percent of births. But in Sweden, Denmark and France, they lead around three-quarters of deliveries. In Great Britain, they deliver half of all babies, including all three of Kate Middleton’s. So if the midwifery model works for royal babies, why not our own?

Check out the video to find out how midwives have been at the center of a culture war that’s deeply rooted in race and class in America.

Today we see vestiges of that history in states with restrictive midwifery laws and barriers to entry for midwives. Earlier this year, one study was the first systematic look at how and where they practice, offering new evidence that empowering them could significantly boost maternal and infant health. Many of the states with poor health outcomes and hostility to midwives also have large black populations. And with black mothers three to four times more likely to die in pregnancy or childbirth, the study raises the possibility that greater use of midwives could reduce racial disparities in maternal health.
 

This story makes up the eighth installment in Vox’s collaboration with ProPublica. You can find this video and all of Vox’s videos on YouTube. Subscribe and stay tuned for more from our partnership.

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Since ProPublica launched Lost Mothers, we’ve covered many facets of the U.S. maternal mortality crisis. Despite spending more per capita on health care than any other country, the U.S. has the highest rate of deaths related to pregnancy and childbirth in the industrialized world.

Source: Vox and ProPublica

But what makes maternal health care in other affluent countries look so different than the U.S.? Among other things, midwives. Midwives in the U.S. participate in less than 10 percent of births. But in Sweden, Denmark and France, they lead around three-quarters of deliveries. In Great Britain, they deliver half of all babies, including all three of Kate Middleton’s. So if the midwifery model works for royal babies, why not our own?

Check out the video to find out how midwives have been at the center of a culture war that’s deeply rooted in race and class in America.

Today we see vestiges of that history in states with restrictive midwifery laws and barriers to entry for midwives. Earlier this year, one study was the first systematic look at how and where they practice, offering new evidence that empowering them could significantly boost maternal and infant health. Many of the states with poor health outcomes and hostility to midwives also have large black populations. And with black mothers three to four times more likely to die in pregnancy or childbirth, the study raises the possibility that greater use of midwives could reduce racial disparities in maternal health.
 

This story makes up the eighth installment in Vox’s collaboration with ProPublica. You can find this video and all of Vox’s videos on YouTube. Subscribe and stay tuned for more from our partnership.


Since ProPublica launched Lost Mothers, we’ve covered many facets of the U.S. maternal mortality crisis. Despite spending more per capita on health care than any other country, the U.S. has the highest rate of deaths related to pregnancy and childbirth in the industrialized world.

Source: Vox and ProPublica

But what makes maternal health care in other affluent countries look so different than the U.S.? Among other things, midwives. Midwives in the U.S. participate in less than 10 percent of births. But in Sweden, Denmark and France, they lead around three-quarters of deliveries. In Great Britain, they deliver half of all babies, including all three of Kate Middleton’s. So if the midwifery model works for royal babies, why not our own?

Check out the video to find out how midwives have been at the center of a culture war that’s deeply rooted in race and class in America.

Today we see vestiges of that history in states with restrictive midwifery laws and barriers to entry for midwives. Earlier this year, one study was the first systematic look at how and where they practice, offering new evidence that empowering them could significantly boost maternal and infant health. Many of the states with poor health outcomes and hostility to midwives also have large black populations. And with black mothers three to four times more likely to die in pregnancy or childbirth, the study raises the possibility that greater use of midwives could reduce racial disparities in maternal health.
 

This story makes up the eighth installment in Vox’s collaboration with ProPublica. You can find this video and all of Vox’s videos on YouTube. Subscribe and stay tuned for more from our partnership.

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Peer mentorship, groups help combat burnout in female physicians

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– Female physicians are at higher risk for burnout compared with their male counterparts, and the reasons and potential solutions for the problem were addressed at a symposium during the annual meeting of the American Psychiatric Association.

The work environment for women has improved over time, but lingering implicit and unconscious biases are part of the reason for the high burnout rate among women who are physicians, as are some inherent biological differences, according to Cynthia M. Stonnington, MD, of the Mayo Clinic, Phoenix.

In this video interview, Dr. Stonnington, symposium chair, discussed potential solutions, including facilitated peer mentorship and group support. She also reviewed recent data on how group support can be of benefit, and noted that “there is power in numbers.



It is imperative that women ... band together and find a way to support each other,” she said.

Dr. Stonnington reported having no disclosures.

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– Female physicians are at higher risk for burnout compared with their male counterparts, and the reasons and potential solutions for the problem were addressed at a symposium during the annual meeting of the American Psychiatric Association.

The work environment for women has improved over time, but lingering implicit and unconscious biases are part of the reason for the high burnout rate among women who are physicians, as are some inherent biological differences, according to Cynthia M. Stonnington, MD, of the Mayo Clinic, Phoenix.

In this video interview, Dr. Stonnington, symposium chair, discussed potential solutions, including facilitated peer mentorship and group support. She also reviewed recent data on how group support can be of benefit, and noted that “there is power in numbers.



It is imperative that women ... band together and find a way to support each other,” she said.

Dr. Stonnington reported having no disclosures.

– Female physicians are at higher risk for burnout compared with their male counterparts, and the reasons and potential solutions for the problem were addressed at a symposium during the annual meeting of the American Psychiatric Association.

The work environment for women has improved over time, but lingering implicit and unconscious biases are part of the reason for the high burnout rate among women who are physicians, as are some inherent biological differences, according to Cynthia M. Stonnington, MD, of the Mayo Clinic, Phoenix.

In this video interview, Dr. Stonnington, symposium chair, discussed potential solutions, including facilitated peer mentorship and group support. She also reviewed recent data on how group support can be of benefit, and noted that “there is power in numbers.



It is imperative that women ... band together and find a way to support each other,” she said.

Dr. Stonnington reported having no disclosures.

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New agents may bring hope for SLE patients

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– Several drugs approved for other conditions may also have good effect in patients with systemic lupus erythematosus, Michelle Petri, MD, said in an interview at the annual Congress of Clinical Rheumatology.

The molecules target several different disease pathways, said Dr. Petri, director of the Hopkins Lupus Center at Johns Hopkins University, Baltimore.

Ustekinumab (Stelara) has accumulated the most data so far. A phase 2 study presented last fall at the annual meeting of the American College of Rheumatology found that it conferred significant benefits relative to placebo, including a 60% responder rate (29% better than placebo), a significantly lower flare rate, and improvements in musculoskeletal and mucocutaneous disease features. The rate of serious adverse events was acceptable (8.3% vs. 9.5% for placebo).

Baricitinib is also being investigated in SLE, Dr. Petri said. A phase 2 study conducted by Eli Lilly closed late last year and will be reported on June 13 at the European League Against Rheumatism’s opening plenary session (Wallace et al. EULAR 2018 abstract OP0019).

The three-armed, placebo-controlled study comprised 314 patients who were randomized to placebo or one of two baricitinib doses, given orally for 24 weeks. The primary outcome was remission of arthritis and/or rash as measured by the SLE Disease Activity Index 2000 (SLEDAI-2K). Secondary endpoints included responder rate, change from baseline in the SLEDAI-2K, change in the Global Assessment of Disease Activity score, and pharmacokinetic measures.

Dr. Petri disclosed relationships with Amgen, Boston Pharmaceuticals, Bristol-Myers Squibb, EMD Serono, Janssen, Novartis, and GlaxoSmithKline.

 

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– Several drugs approved for other conditions may also have good effect in patients with systemic lupus erythematosus, Michelle Petri, MD, said in an interview at the annual Congress of Clinical Rheumatology.

The molecules target several different disease pathways, said Dr. Petri, director of the Hopkins Lupus Center at Johns Hopkins University, Baltimore.

Ustekinumab (Stelara) has accumulated the most data so far. A phase 2 study presented last fall at the annual meeting of the American College of Rheumatology found that it conferred significant benefits relative to placebo, including a 60% responder rate (29% better than placebo), a significantly lower flare rate, and improvements in musculoskeletal and mucocutaneous disease features. The rate of serious adverse events was acceptable (8.3% vs. 9.5% for placebo).

Baricitinib is also being investigated in SLE, Dr. Petri said. A phase 2 study conducted by Eli Lilly closed late last year and will be reported on June 13 at the European League Against Rheumatism’s opening plenary session (Wallace et al. EULAR 2018 abstract OP0019).

The three-armed, placebo-controlled study comprised 314 patients who were randomized to placebo or one of two baricitinib doses, given orally for 24 weeks. The primary outcome was remission of arthritis and/or rash as measured by the SLE Disease Activity Index 2000 (SLEDAI-2K). Secondary endpoints included responder rate, change from baseline in the SLEDAI-2K, change in the Global Assessment of Disease Activity score, and pharmacokinetic measures.

Dr. Petri disclosed relationships with Amgen, Boston Pharmaceuticals, Bristol-Myers Squibb, EMD Serono, Janssen, Novartis, and GlaxoSmithKline.

 

– Several drugs approved for other conditions may also have good effect in patients with systemic lupus erythematosus, Michelle Petri, MD, said in an interview at the annual Congress of Clinical Rheumatology.

The molecules target several different disease pathways, said Dr. Petri, director of the Hopkins Lupus Center at Johns Hopkins University, Baltimore.

Ustekinumab (Stelara) has accumulated the most data so far. A phase 2 study presented last fall at the annual meeting of the American College of Rheumatology found that it conferred significant benefits relative to placebo, including a 60% responder rate (29% better than placebo), a significantly lower flare rate, and improvements in musculoskeletal and mucocutaneous disease features. The rate of serious adverse events was acceptable (8.3% vs. 9.5% for placebo).

Baricitinib is also being investigated in SLE, Dr. Petri said. A phase 2 study conducted by Eli Lilly closed late last year and will be reported on June 13 at the European League Against Rheumatism’s opening plenary session (Wallace et al. EULAR 2018 abstract OP0019).

The three-armed, placebo-controlled study comprised 314 patients who were randomized to placebo or one of two baricitinib doses, given orally for 24 weeks. The primary outcome was remission of arthritis and/or rash as measured by the SLE Disease Activity Index 2000 (SLEDAI-2K). Secondary endpoints included responder rate, change from baseline in the SLEDAI-2K, change in the Global Assessment of Disease Activity score, and pharmacokinetic measures.

Dr. Petri disclosed relationships with Amgen, Boston Pharmaceuticals, Bristol-Myers Squibb, EMD Serono, Janssen, Novartis, and GlaxoSmithKline.

 

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Link between alcohol consumption, neuroinflammation has possible treatment implications

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– Recent discoveries regarding the relationship between alcohol consumption and neuroinflammation suggest a possible role for adjunctive treatments and supplements in addiction treatment, according to Shram Shukla, MD.

For example, a qualitative review of the literature over the past 2-3 years showed that the “neuroinflammatory process in and of itself drives epigenetic changes, which ultimately upregulate neuroinflammation of the brain,” according to Dr. Shukla of Walter Reed National Military Medical Center, Bethesda, Md., who reported the findings in a poster at the annual meeting of the American Psychiatric Association.

In this video interview, he explained that this finding is important because “neuroinflammation leads to neurotoxicity, which leads to neuronal degeneration.”



“As we know, with patients who chronically abuse alcohol, they do have a level of cortical degeneration that we often see on imaging, so there is, perhaps, a role that this may play in that,” he added.

Dr. Shukla said he also found that the neuroinflammatory process, when it drives the epigenetic changes, affects the amygdala, which is known as a “high stress part of the brain.”

“What we found in animal models so far is that if we can impact where that epigenetic change occurs, we can prevent the anxiogenic behaviors we often see in alcohol withdrawal and abstinence; we associate that, in humans, to be the high-stress state we often see in patients when they ... are withdrawing from alcohol.”

This raised questions about whether certain medications and supplements, including vitamin C, pioglitazone, infliximab, and omega-3 fatty acids, could be of benefit, and it was shown that these do affect neuroinflammation and stop neurotoxicity from occurring – and also, in turn, prevent the epigenetic changes, he said.

The take-away is that there may be ways to augment what already is being done (using naltrexone, which works on the reward pathway, for example) to help patients with addiction.

“Now we have something, potentially ... that can do some of the ancillary stuff, working on the withdrawal effects, helping with the behavioral response that we see in patients that are suffering from addiction,” he said.

[email protected]

SOURCE: Shukla S et al. APA Poster Session 4, Poster 3.

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– Recent discoveries regarding the relationship between alcohol consumption and neuroinflammation suggest a possible role for adjunctive treatments and supplements in addiction treatment, according to Shram Shukla, MD.

For example, a qualitative review of the literature over the past 2-3 years showed that the “neuroinflammatory process in and of itself drives epigenetic changes, which ultimately upregulate neuroinflammation of the brain,” according to Dr. Shukla of Walter Reed National Military Medical Center, Bethesda, Md., who reported the findings in a poster at the annual meeting of the American Psychiatric Association.

In this video interview, he explained that this finding is important because “neuroinflammation leads to neurotoxicity, which leads to neuronal degeneration.”



“As we know, with patients who chronically abuse alcohol, they do have a level of cortical degeneration that we often see on imaging, so there is, perhaps, a role that this may play in that,” he added.

Dr. Shukla said he also found that the neuroinflammatory process, when it drives the epigenetic changes, affects the amygdala, which is known as a “high stress part of the brain.”

“What we found in animal models so far is that if we can impact where that epigenetic change occurs, we can prevent the anxiogenic behaviors we often see in alcohol withdrawal and abstinence; we associate that, in humans, to be the high-stress state we often see in patients when they ... are withdrawing from alcohol.”

This raised questions about whether certain medications and supplements, including vitamin C, pioglitazone, infliximab, and omega-3 fatty acids, could be of benefit, and it was shown that these do affect neuroinflammation and stop neurotoxicity from occurring – and also, in turn, prevent the epigenetic changes, he said.

The take-away is that there may be ways to augment what already is being done (using naltrexone, which works on the reward pathway, for example) to help patients with addiction.

“Now we have something, potentially ... that can do some of the ancillary stuff, working on the withdrawal effects, helping with the behavioral response that we see in patients that are suffering from addiction,” he said.

[email protected]

SOURCE: Shukla S et al. APA Poster Session 4, Poster 3.

– Recent discoveries regarding the relationship between alcohol consumption and neuroinflammation suggest a possible role for adjunctive treatments and supplements in addiction treatment, according to Shram Shukla, MD.

For example, a qualitative review of the literature over the past 2-3 years showed that the “neuroinflammatory process in and of itself drives epigenetic changes, which ultimately upregulate neuroinflammation of the brain,” according to Dr. Shukla of Walter Reed National Military Medical Center, Bethesda, Md., who reported the findings in a poster at the annual meeting of the American Psychiatric Association.

In this video interview, he explained that this finding is important because “neuroinflammation leads to neurotoxicity, which leads to neuronal degeneration.”



“As we know, with patients who chronically abuse alcohol, they do have a level of cortical degeneration that we often see on imaging, so there is, perhaps, a role that this may play in that,” he added.

Dr. Shukla said he also found that the neuroinflammatory process, when it drives the epigenetic changes, affects the amygdala, which is known as a “high stress part of the brain.”

“What we found in animal models so far is that if we can impact where that epigenetic change occurs, we can prevent the anxiogenic behaviors we often see in alcohol withdrawal and abstinence; we associate that, in humans, to be the high-stress state we often see in patients when they ... are withdrawing from alcohol.”

This raised questions about whether certain medications and supplements, including vitamin C, pioglitazone, infliximab, and omega-3 fatty acids, could be of benefit, and it was shown that these do affect neuroinflammation and stop neurotoxicity from occurring – and also, in turn, prevent the epigenetic changes, he said.

The take-away is that there may be ways to augment what already is being done (using naltrexone, which works on the reward pathway, for example) to help patients with addiction.

“Now we have something, potentially ... that can do some of the ancillary stuff, working on the withdrawal effects, helping with the behavioral response that we see in patients that are suffering from addiction,” he said.

[email protected]

SOURCE: Shukla S et al. APA Poster Session 4, Poster 3.

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Genes, not adiposity, may be driving appetite differences in obesity

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– Evidence from a twin study points to genes, rather than just adiposity, as the underlying factor in differences in appetite and satiety that have been observed in obesity.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

The work adds a new dimension – and some questions – to previous research, which suggested individuals with obesity show heightened brain activation to food cues, especially calorically dense food.

“We thought it was fat mass…but when we controlled for everything that monozygotic pairs have in common, that relationship went away, implicating something that the monozygotic twins have in common, i.e., genetics,” said first author Jennifer Rosenbaum, MD, in a video interview at the annual meeting of the American Academy of Clinical Endocrinologists.

Dr. Rosenbaum, a fellow in the department of metabolism, endocrinology, and nutrition at the University of Washington, Seattle, and her collaborators made use of a statewide twin registry to conduct an extensive investigation of subjective and objective measures of appetite and satiety in the 42 twin pairs.

Twins had a mean age of 31 years; 27 of the twin pairs were monozygotic, Dr. Rosenbaum said. At least one member of each twin pair met criteria for obesity, and participants had a mean body mass index of 32.8 kg/m2.

On the study day, participants arrived in fasting state, and had a fixed-calorie breakfast equivalent to 10% of their daily caloric needs. They then underwent dual-energy x-ray absorptiometry scanning to determine adiposity, and also filled out a behavioral questionnaire.

Then, participants received the first of two functional MRI scans; during the scan, they were shown images of high calorie foods, low calorie foods, and nonfood objects, completing ratings of how appealing they found each image. After consuming another standardized meal equivalent to 20% of daily caloric needs, the fMRI scan was repeated.

 

 


Finally, participants were given access to a buffet meal and allowed to eat as much as they chose; consumption was measured. Before and after each meal and scan, and at various points during the day, the investigators also obtained blood samples and asked participants to rate their hunger on a visual analog scale.

“When compared with how much fat mass they had, there was no relationship between how hungry or full they were when they were fasting, how hungry or full they were with a snack, or when they ate the buffet. It just didn’t matter how much fat mass they had” for subjective reporting of hunger and fullness, said Dr. Rosenbaum.

However, there was a direct correlation between fat mass and amount consumed at the ad libitum buffet. Additionally, the fMRI analysis showed that “the brain activation that we would expect to go down, didn’t seem to go down as much if you had more adiposity,” she said.

As fat mass went up, areas of the brain implicated in appetite and reward showed more activity when participants were presented with the tempting images of high calorie foods, regardless of the calories consumed. These areas include the ventral and dorsal striata, the amygdala, the insula, the ventral tegmental area, and the medial orbitofrontal cortex.

 

 


Next, the researchers looked for differences within the monozygotic twin pairs, who essentially share a genome. They compared the brain activation of the twin with the higher fat mass with that of the twin with lower fat mass. Instead of seeing the same correlation between higher adiposity and greater brain activation with tempting stimuli, “Suddenly, we lost that relationship between how many calories they would eat and how their brain activated with the food,” said Dr. Rosenbaum. This is a clue, she said, that genetics, rather than simple adiposity, is driving the different responses to food cues.

The study was funded by the National Institutes of Health. Dr. Rosenbaum reported no financial disclosures.

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– Evidence from a twin study points to genes, rather than just adiposity, as the underlying factor in differences in appetite and satiety that have been observed in obesity.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

The work adds a new dimension – and some questions – to previous research, which suggested individuals with obesity show heightened brain activation to food cues, especially calorically dense food.

“We thought it was fat mass…but when we controlled for everything that monozygotic pairs have in common, that relationship went away, implicating something that the monozygotic twins have in common, i.e., genetics,” said first author Jennifer Rosenbaum, MD, in a video interview at the annual meeting of the American Academy of Clinical Endocrinologists.

Dr. Rosenbaum, a fellow in the department of metabolism, endocrinology, and nutrition at the University of Washington, Seattle, and her collaborators made use of a statewide twin registry to conduct an extensive investigation of subjective and objective measures of appetite and satiety in the 42 twin pairs.

Twins had a mean age of 31 years; 27 of the twin pairs were monozygotic, Dr. Rosenbaum said. At least one member of each twin pair met criteria for obesity, and participants had a mean body mass index of 32.8 kg/m2.

On the study day, participants arrived in fasting state, and had a fixed-calorie breakfast equivalent to 10% of their daily caloric needs. They then underwent dual-energy x-ray absorptiometry scanning to determine adiposity, and also filled out a behavioral questionnaire.

Then, participants received the first of two functional MRI scans; during the scan, they were shown images of high calorie foods, low calorie foods, and nonfood objects, completing ratings of how appealing they found each image. After consuming another standardized meal equivalent to 20% of daily caloric needs, the fMRI scan was repeated.

 

 


Finally, participants were given access to a buffet meal and allowed to eat as much as they chose; consumption was measured. Before and after each meal and scan, and at various points during the day, the investigators also obtained blood samples and asked participants to rate their hunger on a visual analog scale.

“When compared with how much fat mass they had, there was no relationship between how hungry or full they were when they were fasting, how hungry or full they were with a snack, or when they ate the buffet. It just didn’t matter how much fat mass they had” for subjective reporting of hunger and fullness, said Dr. Rosenbaum.

However, there was a direct correlation between fat mass and amount consumed at the ad libitum buffet. Additionally, the fMRI analysis showed that “the brain activation that we would expect to go down, didn’t seem to go down as much if you had more adiposity,” she said.

As fat mass went up, areas of the brain implicated in appetite and reward showed more activity when participants were presented with the tempting images of high calorie foods, regardless of the calories consumed. These areas include the ventral and dorsal striata, the amygdala, the insula, the ventral tegmental area, and the medial orbitofrontal cortex.

 

 


Next, the researchers looked for differences within the monozygotic twin pairs, who essentially share a genome. They compared the brain activation of the twin with the higher fat mass with that of the twin with lower fat mass. Instead of seeing the same correlation between higher adiposity and greater brain activation with tempting stimuli, “Suddenly, we lost that relationship between how many calories they would eat and how their brain activated with the food,” said Dr. Rosenbaum. This is a clue, she said, that genetics, rather than simple adiposity, is driving the different responses to food cues.

The study was funded by the National Institutes of Health. Dr. Rosenbaum reported no financial disclosures.

 

– Evidence from a twin study points to genes, rather than just adiposity, as the underlying factor in differences in appetite and satiety that have been observed in obesity.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

The work adds a new dimension – and some questions – to previous research, which suggested individuals with obesity show heightened brain activation to food cues, especially calorically dense food.

“We thought it was fat mass…but when we controlled for everything that monozygotic pairs have in common, that relationship went away, implicating something that the monozygotic twins have in common, i.e., genetics,” said first author Jennifer Rosenbaum, MD, in a video interview at the annual meeting of the American Academy of Clinical Endocrinologists.

Dr. Rosenbaum, a fellow in the department of metabolism, endocrinology, and nutrition at the University of Washington, Seattle, and her collaborators made use of a statewide twin registry to conduct an extensive investigation of subjective and objective measures of appetite and satiety in the 42 twin pairs.

Twins had a mean age of 31 years; 27 of the twin pairs were monozygotic, Dr. Rosenbaum said. At least one member of each twin pair met criteria for obesity, and participants had a mean body mass index of 32.8 kg/m2.

On the study day, participants arrived in fasting state, and had a fixed-calorie breakfast equivalent to 10% of their daily caloric needs. They then underwent dual-energy x-ray absorptiometry scanning to determine adiposity, and also filled out a behavioral questionnaire.

Then, participants received the first of two functional MRI scans; during the scan, they were shown images of high calorie foods, low calorie foods, and nonfood objects, completing ratings of how appealing they found each image. After consuming another standardized meal equivalent to 20% of daily caloric needs, the fMRI scan was repeated.

 

 


Finally, participants were given access to a buffet meal and allowed to eat as much as they chose; consumption was measured. Before and after each meal and scan, and at various points during the day, the investigators also obtained blood samples and asked participants to rate their hunger on a visual analog scale.

“When compared with how much fat mass they had, there was no relationship between how hungry or full they were when they were fasting, how hungry or full they were with a snack, or when they ate the buffet. It just didn’t matter how much fat mass they had” for subjective reporting of hunger and fullness, said Dr. Rosenbaum.

However, there was a direct correlation between fat mass and amount consumed at the ad libitum buffet. Additionally, the fMRI analysis showed that “the brain activation that we would expect to go down, didn’t seem to go down as much if you had more adiposity,” she said.

As fat mass went up, areas of the brain implicated in appetite and reward showed more activity when participants were presented with the tempting images of high calorie foods, regardless of the calories consumed. These areas include the ventral and dorsal striata, the amygdala, the insula, the ventral tegmental area, and the medial orbitofrontal cortex.

 

 


Next, the researchers looked for differences within the monozygotic twin pairs, who essentially share a genome. They compared the brain activation of the twin with the higher fat mass with that of the twin with lower fat mass. Instead of seeing the same correlation between higher adiposity and greater brain activation with tempting stimuli, “Suddenly, we lost that relationship between how many calories they would eat and how their brain activated with the food,” said Dr. Rosenbaum. This is a clue, she said, that genetics, rather than simple adiposity, is driving the different responses to food cues.

The study was funded by the National Institutes of Health. Dr. Rosenbaum reported no financial disclosures.

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Ureteral reimplantation for injuries not easily managed with stenting

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The risk of lower urinary tract injury (bladder or ureters) at the time of benign gynecologic surgery is estimated to be between 0.3% and 4%. The majority are bladder injuries, with ureteral injuries occurring in 0.3%-1.8% of hysterectomies. While urologic procedures account for the majority of iatrogenic ureteral injuries, gynecologic surgery is the second leading cause, followed by general surgery and colorectal surgery.

Dr. Kimberly Kenton

With respect to hysterectomy in particular, the risk of ureteral injury is less than 1%. In a large prospective cohort of women undergoing hysterectomy for benign indications in 53 hospitals in Finland, rates of ureteral injury varied based on the route of hysterectomy, with laparoscopic and abdominal routes having an injury rate of 0.3% and the vaginal route having an injury rate of 0.04% (Human Reprod. 2011;26[7]:1741-51). The risk generally is higher with procedures for endometriosis, large fibroids, cancer, or pelvic organ prolapse.

During hysterectomy and with gynecologic surgery overall, ureteral injuries occur most commonly at three locations: at the level of the infundibulopelvic ligament and ovarian vessels, at the level of the uterine artery, and near the vaginal cuff. Identification and knowledge of the course of the ureter at these three locations is essential in preventing ureteral injury during pelvic surgery.

Vidyard Video

SOURCE: DR. MUELLER AND DR. KENTON

Perioperative ureteral stenting has been proposed as a method of preventing iatrogenic injury by allowing surgeons to more easily identify the ureters during surgery. Available reports suggest, however, that the actual risk of injury is not decreased and may even be increased by placing prophylactic ureteral stents, and most surgeons have moved away from this practice. The use of lighted ureteral stents during complex laparoscopic endometriosis resections may be helpful.

Many health care systems recommend intraoperative cystoscopy with bladder and ureteral survey to evaluate the integrity of the lower urinary tract at the time of all hysterectomies. A recent study of nearly 3,000 women undergoing benign hysterectomies at the University of Michigan, Ann Arbor, showed a significant decrease in the rate of delayed diagnosis of urinary tract injuries with implementation of a universal cystoscopy policy. While the rate of lower urinary tract injury was fairly consistent before and after implementation of the policy (2.6% and 1.8%, respectively), the rate of delayed detection of a lower urinary tract injury decreased from 0.7% before the policy to 0.1% after implementation (Obstet Gynecol. 2016;127[2]:369-75). The study also showed that hospital costs nearly doubled with a delayed detection of a lower urinary tract injury.

Unfortunately, even a normal postoperative cystoscopy does not ensure there is no lower urinary tract injury, especially considering that thermal injuries resulting from the use of energy devices typically do not present until 7-14 days after surgery. Overall, however, ureteral injury detection rates with universal cystoscopy approach 97% (Obstet Gynecol. 2009;113:6-10).

 

 


 

Identifying injuries

Intraoperative recognition and repair always is preferred, and when ureteral injuries are discovered or suspected in the operating room, cystoscopy and retrograde pyelography is the most helpful imaging tool. Contrast dye is injected during cystoscopy directly into the renal collecting system through the ureteral orifices; with fluoroscopy, the surgeon can visualize the integrity of the ureter from the bladder to the renal pelvis to diagnosis a ureteral injury, including ureteral transection, kinking, or ligation caused by a suture or sealing device.

If retrograde pyelography shows a transection or injury from a crushing clamp or sealing device, we recommend ureteroureteral anastomosis or urethral neocystostomy depending on the extent and location of the injury. If the ureter just appears kinked, sometime simply releasing the cuff sutures or uterosacral ligament sutures will resolve the obstruction. If there is extravasation of contrast suggesting a partial tear, placing a double-J ureteral stent for 6-8 weeks is frequently sufficient.

Patients with delayed iatrogenic ureteral injuries present with symptoms that often are nonspecific and that include abdominal or flank pain, fever, nausea, vomiting, back pain, and leukocytosis.

We recommend that patients with a history of surgery and symptoms suggestive of a ureteral injury be initially evaluated with CT urography that images the renal collecting system both as contrast dye is instilled and again several minutes later as it has progressed through the entire urinary tract. Alternatively, if CT urography is unavailable, a retrograde pyelogram can be performed as an emergency procedure to determine the location of renal injury.

Dr. Maggie Mueller

Surgical management

Delayed ureteral injuries resulting in partial ureteral obstruction or extravasation of urine into the pelvis can sometimes be managed conservatively though placement of an internalized double J stent. The stent can be placed in a retrograde fashion via cystoscopy by a urogynecologist or urologist or antegrade through a percutaneous nephrostomy tube by an interventional radiologist. Several small case series suggest high success rates with this approach.

 

 

We typically manage delayed ureteral injuries that are not amenable to, or do not heal with, ureteral stenting with ureteroneocystotomy, or ureteral reimplantation, into the bladder. This technique is effective for distal ureteral injuries that result in obstruction or fistula and are in close proximity to the bladder (most iatrogenic gynecologic injuries). We perform ureteroneocystotomy via an open, robotic, or laparoscopic route of access depending on the circumstance.

Our preferred route of access is minimally invasive with the da Vinci robot. A camera port is placed at the umbilicus, two robotic ports are placed on the patient’s left side at the level of the umbilicus, and one is placed on the patient’s right side at the level of the umbilicus with an additional assistant port on the right side. It is helpful if each port is at least 8 cm apart. If obstruction or transection is suspected to be more proximal, the ports may have been shifted above the umbilicus to optimally mobilize the ureter.

First, the ureter is identified and dissected. Regardless of the site of injury, which is usually identifiable with inflammation and scar tissue, it is always easiest to identify the ureter at the bifurcation of the common iliac vessels. The isolated ureter is inspected proximally and above the area of injury, and we find it helpful to place a vessel loop around the ureter for easy manipulation and counter traction. Care must be taken not to disturb the adventitia and blood supply. We do not transect the ureter until we’re ready to reimplant it in the bladder.

To mobilize the bladder and prepare for a tension-free anastomosis, an adequate retropubic dissection is performed, starting with an incision in the anterior abdominal wall peritoneum and taking it down to the level of the pubic bone and into the retropubic space. It is important to be mindful of the location of the obturator neurovascular bundle when performing this dissection.

Achieving a tension-free and water-tight anastomosis of the ureter to the bladder is critical. The bladder should be mobilized such that it reaches to above the injured portion of the ureter. The bladder is retrograde filled with approximately 300 mL and a reimplantation site of the posterior bladder is identified. When there is concern about tension, a psoas hitch suture can be placed to keep the bladder in a superior position with reduced tension. Because of high rates of the congenital absence of the psoas tendon minor, we advocate direct visualization of the genitofemoral nerve by incising the peritoneum; this will avoid nerve entrapment.

Once the bladder is mobilized and the ureter isolated, we perform an intentional cystotomy in the posterior lateral aspect of the bladder. The ureter, which is on the vessel loop, must be transected proximal to the site of injury. To facilitate this, we spatulate the ureter, making a vertical incision of often about 5 mm in length to increase our surface area for anastomosis. Placement of a suture at the apex of the spatulated ureter helps us maintain orientation.

 

 


Anastomosis of the ureter and bladder is achieved in a mucosa-to-mucosa fashion using a series of interrupted monofilament fine absorbable sutures; we use a 3-0 monocryl suture. The most posterior anastomotic sutures are placed first to allow for optimal visualization, and prior to completing the anastomosis, a guide wire is placed through the open ureter and a double-J stent is introduced into the renal pelvis. The wire is then removed and the distal end of the stent coiled in the bladder. This stent will protect the ureter for about 6 weeks while it heals. The anastomosis is then completed on the anterior aspect, with a watertight closure ensured.

Postoperatively, we routinely perform an x-ray to ensure proper placement of the stent in the reimplanted ureter. To determine correct stent placement, the last rib is identified at T12 vertebrae. The renal pelvis is located at the level of the L2-L3 with the left being slightly higher than the right. A Foley catheter is maintained in the bladder for approximately 2 weeks, and the stent is maintained for approximately 6 weeks. Both the catheter and the stent can be removed in the office with cystoscopic guidance.

Imaging at 4-6 weeks after removal of the stent is performed to rule out development of an obstruction or a stricture. In patients who did not have a dilated ureter and renal collecting system prior to reimplantation, a renal ultrasound is sufficient to identify hydroureter/hydronephrosis or a urinoma. Many patients with a markedly dilated renal-collecting system prior to ureteral reimplantation will have persistent hydroureter/hydronephrosis (similar to a latex balloon that does not return to its original size after it is blown up) after reimplantation. A Lasix renal scan is a better imaging modality in these patients because it can differentiate a ureter that is dilated from one that is dilated and obstructed.

It is important to note that prompt ureteroneocystotomy is feasible only when the delayed ureteral injury presents within approximately 7 days of surgery. If the patient presents more than a week after surgery, inflammation is so significant that conservative management is necessary with reevaluation for reimplantation in another 6 weeks. Decompression of the system prior to reimplantation can be achieved through either stent placement or placement of a percutaneous nephrostomy tube. We prefer the latter because it reduces inflammation around the ureter that may make subsequent dissection and surgery more difficult.
 

Dr. Kenton is chief of urogynecology, Northwestern University, Chicago, and Dr. Mueller also is in the division of female pelvic medicine and reconstructive surgery–urogynecology at Northwestern. Dr. Kenton discloses grant funding from Boston Scientific.

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The risk of lower urinary tract injury (bladder or ureters) at the time of benign gynecologic surgery is estimated to be between 0.3% and 4%. The majority are bladder injuries, with ureteral injuries occurring in 0.3%-1.8% of hysterectomies. While urologic procedures account for the majority of iatrogenic ureteral injuries, gynecologic surgery is the second leading cause, followed by general surgery and colorectal surgery.

Dr. Kimberly Kenton

With respect to hysterectomy in particular, the risk of ureteral injury is less than 1%. In a large prospective cohort of women undergoing hysterectomy for benign indications in 53 hospitals in Finland, rates of ureteral injury varied based on the route of hysterectomy, with laparoscopic and abdominal routes having an injury rate of 0.3% and the vaginal route having an injury rate of 0.04% (Human Reprod. 2011;26[7]:1741-51). The risk generally is higher with procedures for endometriosis, large fibroids, cancer, or pelvic organ prolapse.

During hysterectomy and with gynecologic surgery overall, ureteral injuries occur most commonly at three locations: at the level of the infundibulopelvic ligament and ovarian vessels, at the level of the uterine artery, and near the vaginal cuff. Identification and knowledge of the course of the ureter at these three locations is essential in preventing ureteral injury during pelvic surgery.

Vidyard Video

SOURCE: DR. MUELLER AND DR. KENTON

Perioperative ureteral stenting has been proposed as a method of preventing iatrogenic injury by allowing surgeons to more easily identify the ureters during surgery. Available reports suggest, however, that the actual risk of injury is not decreased and may even be increased by placing prophylactic ureteral stents, and most surgeons have moved away from this practice. The use of lighted ureteral stents during complex laparoscopic endometriosis resections may be helpful.

Many health care systems recommend intraoperative cystoscopy with bladder and ureteral survey to evaluate the integrity of the lower urinary tract at the time of all hysterectomies. A recent study of nearly 3,000 women undergoing benign hysterectomies at the University of Michigan, Ann Arbor, showed a significant decrease in the rate of delayed diagnosis of urinary tract injuries with implementation of a universal cystoscopy policy. While the rate of lower urinary tract injury was fairly consistent before and after implementation of the policy (2.6% and 1.8%, respectively), the rate of delayed detection of a lower urinary tract injury decreased from 0.7% before the policy to 0.1% after implementation (Obstet Gynecol. 2016;127[2]:369-75). The study also showed that hospital costs nearly doubled with a delayed detection of a lower urinary tract injury.

Unfortunately, even a normal postoperative cystoscopy does not ensure there is no lower urinary tract injury, especially considering that thermal injuries resulting from the use of energy devices typically do not present until 7-14 days after surgery. Overall, however, ureteral injury detection rates with universal cystoscopy approach 97% (Obstet Gynecol. 2009;113:6-10).

 

 


 

Identifying injuries

Intraoperative recognition and repair always is preferred, and when ureteral injuries are discovered or suspected in the operating room, cystoscopy and retrograde pyelography is the most helpful imaging tool. Contrast dye is injected during cystoscopy directly into the renal collecting system through the ureteral orifices; with fluoroscopy, the surgeon can visualize the integrity of the ureter from the bladder to the renal pelvis to diagnosis a ureteral injury, including ureteral transection, kinking, or ligation caused by a suture or sealing device.

If retrograde pyelography shows a transection or injury from a crushing clamp or sealing device, we recommend ureteroureteral anastomosis or urethral neocystostomy depending on the extent and location of the injury. If the ureter just appears kinked, sometime simply releasing the cuff sutures or uterosacral ligament sutures will resolve the obstruction. If there is extravasation of contrast suggesting a partial tear, placing a double-J ureteral stent for 6-8 weeks is frequently sufficient.

Patients with delayed iatrogenic ureteral injuries present with symptoms that often are nonspecific and that include abdominal or flank pain, fever, nausea, vomiting, back pain, and leukocytosis.

We recommend that patients with a history of surgery and symptoms suggestive of a ureteral injury be initially evaluated with CT urography that images the renal collecting system both as contrast dye is instilled and again several minutes later as it has progressed through the entire urinary tract. Alternatively, if CT urography is unavailable, a retrograde pyelogram can be performed as an emergency procedure to determine the location of renal injury.

Dr. Maggie Mueller

Surgical management

Delayed ureteral injuries resulting in partial ureteral obstruction or extravasation of urine into the pelvis can sometimes be managed conservatively though placement of an internalized double J stent. The stent can be placed in a retrograde fashion via cystoscopy by a urogynecologist or urologist or antegrade through a percutaneous nephrostomy tube by an interventional radiologist. Several small case series suggest high success rates with this approach.

 

 

We typically manage delayed ureteral injuries that are not amenable to, or do not heal with, ureteral stenting with ureteroneocystotomy, or ureteral reimplantation, into the bladder. This technique is effective for distal ureteral injuries that result in obstruction or fistula and are in close proximity to the bladder (most iatrogenic gynecologic injuries). We perform ureteroneocystotomy via an open, robotic, or laparoscopic route of access depending on the circumstance.

Our preferred route of access is minimally invasive with the da Vinci robot. A camera port is placed at the umbilicus, two robotic ports are placed on the patient’s left side at the level of the umbilicus, and one is placed on the patient’s right side at the level of the umbilicus with an additional assistant port on the right side. It is helpful if each port is at least 8 cm apart. If obstruction or transection is suspected to be more proximal, the ports may have been shifted above the umbilicus to optimally mobilize the ureter.

First, the ureter is identified and dissected. Regardless of the site of injury, which is usually identifiable with inflammation and scar tissue, it is always easiest to identify the ureter at the bifurcation of the common iliac vessels. The isolated ureter is inspected proximally and above the area of injury, and we find it helpful to place a vessel loop around the ureter for easy manipulation and counter traction. Care must be taken not to disturb the adventitia and blood supply. We do not transect the ureter until we’re ready to reimplant it in the bladder.

To mobilize the bladder and prepare for a tension-free anastomosis, an adequate retropubic dissection is performed, starting with an incision in the anterior abdominal wall peritoneum and taking it down to the level of the pubic bone and into the retropubic space. It is important to be mindful of the location of the obturator neurovascular bundle when performing this dissection.

Achieving a tension-free and water-tight anastomosis of the ureter to the bladder is critical. The bladder should be mobilized such that it reaches to above the injured portion of the ureter. The bladder is retrograde filled with approximately 300 mL and a reimplantation site of the posterior bladder is identified. When there is concern about tension, a psoas hitch suture can be placed to keep the bladder in a superior position with reduced tension. Because of high rates of the congenital absence of the psoas tendon minor, we advocate direct visualization of the genitofemoral nerve by incising the peritoneum; this will avoid nerve entrapment.

Once the bladder is mobilized and the ureter isolated, we perform an intentional cystotomy in the posterior lateral aspect of the bladder. The ureter, which is on the vessel loop, must be transected proximal to the site of injury. To facilitate this, we spatulate the ureter, making a vertical incision of often about 5 mm in length to increase our surface area for anastomosis. Placement of a suture at the apex of the spatulated ureter helps us maintain orientation.

 

 


Anastomosis of the ureter and bladder is achieved in a mucosa-to-mucosa fashion using a series of interrupted monofilament fine absorbable sutures; we use a 3-0 monocryl suture. The most posterior anastomotic sutures are placed first to allow for optimal visualization, and prior to completing the anastomosis, a guide wire is placed through the open ureter and a double-J stent is introduced into the renal pelvis. The wire is then removed and the distal end of the stent coiled in the bladder. This stent will protect the ureter for about 6 weeks while it heals. The anastomosis is then completed on the anterior aspect, with a watertight closure ensured.

Postoperatively, we routinely perform an x-ray to ensure proper placement of the stent in the reimplanted ureter. To determine correct stent placement, the last rib is identified at T12 vertebrae. The renal pelvis is located at the level of the L2-L3 with the left being slightly higher than the right. A Foley catheter is maintained in the bladder for approximately 2 weeks, and the stent is maintained for approximately 6 weeks. Both the catheter and the stent can be removed in the office with cystoscopic guidance.

Imaging at 4-6 weeks after removal of the stent is performed to rule out development of an obstruction or a stricture. In patients who did not have a dilated ureter and renal collecting system prior to reimplantation, a renal ultrasound is sufficient to identify hydroureter/hydronephrosis or a urinoma. Many patients with a markedly dilated renal-collecting system prior to ureteral reimplantation will have persistent hydroureter/hydronephrosis (similar to a latex balloon that does not return to its original size after it is blown up) after reimplantation. A Lasix renal scan is a better imaging modality in these patients because it can differentiate a ureter that is dilated from one that is dilated and obstructed.

It is important to note that prompt ureteroneocystotomy is feasible only when the delayed ureteral injury presents within approximately 7 days of surgery. If the patient presents more than a week after surgery, inflammation is so significant that conservative management is necessary with reevaluation for reimplantation in another 6 weeks. Decompression of the system prior to reimplantation can be achieved through either stent placement or placement of a percutaneous nephrostomy tube. We prefer the latter because it reduces inflammation around the ureter that may make subsequent dissection and surgery more difficult.
 

Dr. Kenton is chief of urogynecology, Northwestern University, Chicago, and Dr. Mueller also is in the division of female pelvic medicine and reconstructive surgery–urogynecology at Northwestern. Dr. Kenton discloses grant funding from Boston Scientific.

 

The risk of lower urinary tract injury (bladder or ureters) at the time of benign gynecologic surgery is estimated to be between 0.3% and 4%. The majority are bladder injuries, with ureteral injuries occurring in 0.3%-1.8% of hysterectomies. While urologic procedures account for the majority of iatrogenic ureteral injuries, gynecologic surgery is the second leading cause, followed by general surgery and colorectal surgery.

Dr. Kimberly Kenton

With respect to hysterectomy in particular, the risk of ureteral injury is less than 1%. In a large prospective cohort of women undergoing hysterectomy for benign indications in 53 hospitals in Finland, rates of ureteral injury varied based on the route of hysterectomy, with laparoscopic and abdominal routes having an injury rate of 0.3% and the vaginal route having an injury rate of 0.04% (Human Reprod. 2011;26[7]:1741-51). The risk generally is higher with procedures for endometriosis, large fibroids, cancer, or pelvic organ prolapse.

During hysterectomy and with gynecologic surgery overall, ureteral injuries occur most commonly at three locations: at the level of the infundibulopelvic ligament and ovarian vessels, at the level of the uterine artery, and near the vaginal cuff. Identification and knowledge of the course of the ureter at these three locations is essential in preventing ureteral injury during pelvic surgery.

Vidyard Video

SOURCE: DR. MUELLER AND DR. KENTON

Perioperative ureteral stenting has been proposed as a method of preventing iatrogenic injury by allowing surgeons to more easily identify the ureters during surgery. Available reports suggest, however, that the actual risk of injury is not decreased and may even be increased by placing prophylactic ureteral stents, and most surgeons have moved away from this practice. The use of lighted ureteral stents during complex laparoscopic endometriosis resections may be helpful.

Many health care systems recommend intraoperative cystoscopy with bladder and ureteral survey to evaluate the integrity of the lower urinary tract at the time of all hysterectomies. A recent study of nearly 3,000 women undergoing benign hysterectomies at the University of Michigan, Ann Arbor, showed a significant decrease in the rate of delayed diagnosis of urinary tract injuries with implementation of a universal cystoscopy policy. While the rate of lower urinary tract injury was fairly consistent before and after implementation of the policy (2.6% and 1.8%, respectively), the rate of delayed detection of a lower urinary tract injury decreased from 0.7% before the policy to 0.1% after implementation (Obstet Gynecol. 2016;127[2]:369-75). The study also showed that hospital costs nearly doubled with a delayed detection of a lower urinary tract injury.

Unfortunately, even a normal postoperative cystoscopy does not ensure there is no lower urinary tract injury, especially considering that thermal injuries resulting from the use of energy devices typically do not present until 7-14 days after surgery. Overall, however, ureteral injury detection rates with universal cystoscopy approach 97% (Obstet Gynecol. 2009;113:6-10).

 

 


 

Identifying injuries

Intraoperative recognition and repair always is preferred, and when ureteral injuries are discovered or suspected in the operating room, cystoscopy and retrograde pyelography is the most helpful imaging tool. Contrast dye is injected during cystoscopy directly into the renal collecting system through the ureteral orifices; with fluoroscopy, the surgeon can visualize the integrity of the ureter from the bladder to the renal pelvis to diagnosis a ureteral injury, including ureteral transection, kinking, or ligation caused by a suture or sealing device.

If retrograde pyelography shows a transection or injury from a crushing clamp or sealing device, we recommend ureteroureteral anastomosis or urethral neocystostomy depending on the extent and location of the injury. If the ureter just appears kinked, sometime simply releasing the cuff sutures or uterosacral ligament sutures will resolve the obstruction. If there is extravasation of contrast suggesting a partial tear, placing a double-J ureteral stent for 6-8 weeks is frequently sufficient.

Patients with delayed iatrogenic ureteral injuries present with symptoms that often are nonspecific and that include abdominal or flank pain, fever, nausea, vomiting, back pain, and leukocytosis.

We recommend that patients with a history of surgery and symptoms suggestive of a ureteral injury be initially evaluated with CT urography that images the renal collecting system both as contrast dye is instilled and again several minutes later as it has progressed through the entire urinary tract. Alternatively, if CT urography is unavailable, a retrograde pyelogram can be performed as an emergency procedure to determine the location of renal injury.

Dr. Maggie Mueller

Surgical management

Delayed ureteral injuries resulting in partial ureteral obstruction or extravasation of urine into the pelvis can sometimes be managed conservatively though placement of an internalized double J stent. The stent can be placed in a retrograde fashion via cystoscopy by a urogynecologist or urologist or antegrade through a percutaneous nephrostomy tube by an interventional radiologist. Several small case series suggest high success rates with this approach.

 

 

We typically manage delayed ureteral injuries that are not amenable to, or do not heal with, ureteral stenting with ureteroneocystotomy, or ureteral reimplantation, into the bladder. This technique is effective for distal ureteral injuries that result in obstruction or fistula and are in close proximity to the bladder (most iatrogenic gynecologic injuries). We perform ureteroneocystotomy via an open, robotic, or laparoscopic route of access depending on the circumstance.

Our preferred route of access is minimally invasive with the da Vinci robot. A camera port is placed at the umbilicus, two robotic ports are placed on the patient’s left side at the level of the umbilicus, and one is placed on the patient’s right side at the level of the umbilicus with an additional assistant port on the right side. It is helpful if each port is at least 8 cm apart. If obstruction or transection is suspected to be more proximal, the ports may have been shifted above the umbilicus to optimally mobilize the ureter.

First, the ureter is identified and dissected. Regardless of the site of injury, which is usually identifiable with inflammation and scar tissue, it is always easiest to identify the ureter at the bifurcation of the common iliac vessels. The isolated ureter is inspected proximally and above the area of injury, and we find it helpful to place a vessel loop around the ureter for easy manipulation and counter traction. Care must be taken not to disturb the adventitia and blood supply. We do not transect the ureter until we’re ready to reimplant it in the bladder.

To mobilize the bladder and prepare for a tension-free anastomosis, an adequate retropubic dissection is performed, starting with an incision in the anterior abdominal wall peritoneum and taking it down to the level of the pubic bone and into the retropubic space. It is important to be mindful of the location of the obturator neurovascular bundle when performing this dissection.

Achieving a tension-free and water-tight anastomosis of the ureter to the bladder is critical. The bladder should be mobilized such that it reaches to above the injured portion of the ureter. The bladder is retrograde filled with approximately 300 mL and a reimplantation site of the posterior bladder is identified. When there is concern about tension, a psoas hitch suture can be placed to keep the bladder in a superior position with reduced tension. Because of high rates of the congenital absence of the psoas tendon minor, we advocate direct visualization of the genitofemoral nerve by incising the peritoneum; this will avoid nerve entrapment.

Once the bladder is mobilized and the ureter isolated, we perform an intentional cystotomy in the posterior lateral aspect of the bladder. The ureter, which is on the vessel loop, must be transected proximal to the site of injury. To facilitate this, we spatulate the ureter, making a vertical incision of often about 5 mm in length to increase our surface area for anastomosis. Placement of a suture at the apex of the spatulated ureter helps us maintain orientation.

 

 


Anastomosis of the ureter and bladder is achieved in a mucosa-to-mucosa fashion using a series of interrupted monofilament fine absorbable sutures; we use a 3-0 monocryl suture. The most posterior anastomotic sutures are placed first to allow for optimal visualization, and prior to completing the anastomosis, a guide wire is placed through the open ureter and a double-J stent is introduced into the renal pelvis. The wire is then removed and the distal end of the stent coiled in the bladder. This stent will protect the ureter for about 6 weeks while it heals. The anastomosis is then completed on the anterior aspect, with a watertight closure ensured.

Postoperatively, we routinely perform an x-ray to ensure proper placement of the stent in the reimplanted ureter. To determine correct stent placement, the last rib is identified at T12 vertebrae. The renal pelvis is located at the level of the L2-L3 with the left being slightly higher than the right. A Foley catheter is maintained in the bladder for approximately 2 weeks, and the stent is maintained for approximately 6 weeks. Both the catheter and the stent can be removed in the office with cystoscopic guidance.

Imaging at 4-6 weeks after removal of the stent is performed to rule out development of an obstruction or a stricture. In patients who did not have a dilated ureter and renal collecting system prior to reimplantation, a renal ultrasound is sufficient to identify hydroureter/hydronephrosis or a urinoma. Many patients with a markedly dilated renal-collecting system prior to ureteral reimplantation will have persistent hydroureter/hydronephrosis (similar to a latex balloon that does not return to its original size after it is blown up) after reimplantation. A Lasix renal scan is a better imaging modality in these patients because it can differentiate a ureter that is dilated from one that is dilated and obstructed.

It is important to note that prompt ureteroneocystotomy is feasible only when the delayed ureteral injury presents within approximately 7 days of surgery. If the patient presents more than a week after surgery, inflammation is so significant that conservative management is necessary with reevaluation for reimplantation in another 6 weeks. Decompression of the system prior to reimplantation can be achieved through either stent placement or placement of a percutaneous nephrostomy tube. We prefer the latter because it reduces inflammation around the ureter that may make subsequent dissection and surgery more difficult.
 

Dr. Kenton is chief of urogynecology, Northwestern University, Chicago, and Dr. Mueller also is in the division of female pelvic medicine and reconstructive surgery–urogynecology at Northwestern. Dr. Kenton discloses grant funding from Boston Scientific.

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