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EPI: Practice changing contributions
Dr. Goel scans the journals, so you don't have to!

Akash Goel, MD
This month’s journal review of clinical research in exocrine pancreatic insufficiency includes a number of significant and practice changing contributions. The first selection appears in BMC Gastroenterology by Uetsuki, et al.1  The researcher's premise is that while EPI is a high prevalence condition, it suffers from underdiagnosis largely stemming from insufficient diagnostics for EPI. PABA excretion requires fasting and a 6 hour test. Fecal elastase has low sensitivity in those with mild to moderate EPI.  This study aimed to assess the test characteristics of fasting hydrogen breath test concentration (FBHC) as a simple outpatient diagnostic stool for the assessment of EPI.  


In the study, 60 patients were classified as having EPI based on the gold standard test of PABA excretion, then the FBHC of the two groups were compared. According to the study findings FBHC levels were higher in the EPI group 15.70 (1.4 to 77.0) ppm than in the non-PEI group 2.80 (0.7 to 28.2) ppm (P < 0.0001).  The cutoff value for FBHC of 10.7 ppm (95% CI: 0.678–0.913; P < 0.001) showed a sensitivity of 73.3% and a specificity of 83.3% for PEI diagnosis. Interestingly, to prove biologic plausibility, the researchers also looked at microbiome analysis and found that there was a significant increase of relative abundance of phylum Firmicutes (P < 0.05) and the genus Clostridium (P < 0.05) in the EPI group. The researchers suggested that the flow of undigested food in EPI may select for Clorstridia species, which are the main hydrogen producing bacteria in the intestine. 

 

In AZN Journal of Surgery, Chan-Min Choi, et al looked at management of palliative stage pancreatic ductal adenocarcinomas (PDAC)  in 67 patients with locally advanced or metastatic pancreatic cancer at Western Health in Melbourne.2 Weight loss and steatorrhea were present in 83.6% and 13.4% of patients, respectively, and median body mass index decreased by 13.3% from pre-illness to cancer diagnosis. Yet, despite high rates of referral to dieticians (79.1%), only 24 patients were prescribed pancreatic enzyme replacement therapy. The researchers concluded that the "study shows a lack of clear guideline for diagnosis and management of EPI for palliative PDAC.”

 

Finally a study by Johnston et al. in Gastroenterology looked at predictors of exocrine pancreatic insufficiency in 68 patients who underwent pancreatectomy (distal, n=23; pancreaticoduodenectomy, n=45).3 EPI, requiring pancreatic enzyme replacement therapy, developed in 50% of patients at 1-year postpancreatectomy. The researchers looked at predictors of EPI including variables such as preoperative A1c, smoking status, neoadjuvant chemo and radio therapy, and age, among others. In the final multivariate analysis, the only factor associated with EPI development was postoperative remnant pancreas volume (odds ratio, 0.93; 95% CI, 0.88-0.98; P < 0.01). While these studies may not immediately change practice, they offer further steps in the direction towards better diagnostics and more appropriate management of EPI.  

References 

1. Uetsuki K, Kawashima H, Ohno E, et al. Measurement of fasting breath hydrogen concentration as a simple diagnostic method for pancreatic exocrine insufficiency. BMC Gastroenterol 2021;21(1):211.

2. Choi CC-M, Choi J, Houli N, et al. Evaluation of palliative treatments in unresectable pancreatic cancer. ANZ J Surg 2021;

3. Johnston ME, Wahab SA, Turner K, et al. 298 post-pancreatectomy volumetric analysis: a missing variable in the development of post-operative endocrine and exocrine dysfunction. Gastroenterology 2021;160(6):S-878.

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Akash Goel, MD

Assistant Professor, Weill Cornell/New York Presbyterian Hospital

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Assistant Professor, Weill Cornell/New York Presbyterian Hospital

Dr. Goel scans the journals, so you don't have to!
Dr. Goel scans the journals, so you don't have to!

Akash Goel, MD
This month’s journal review of clinical research in exocrine pancreatic insufficiency includes a number of significant and practice changing contributions. The first selection appears in BMC Gastroenterology by Uetsuki, et al.1  The researcher's premise is that while EPI is a high prevalence condition, it suffers from underdiagnosis largely stemming from insufficient diagnostics for EPI. PABA excretion requires fasting and a 6 hour test. Fecal elastase has low sensitivity in those with mild to moderate EPI.  This study aimed to assess the test characteristics of fasting hydrogen breath test concentration (FBHC) as a simple outpatient diagnostic stool for the assessment of EPI.  


In the study, 60 patients were classified as having EPI based on the gold standard test of PABA excretion, then the FBHC of the two groups were compared. According to the study findings FBHC levels were higher in the EPI group 15.70 (1.4 to 77.0) ppm than in the non-PEI group 2.80 (0.7 to 28.2) ppm (P < 0.0001).  The cutoff value for FBHC of 10.7 ppm (95% CI: 0.678–0.913; P < 0.001) showed a sensitivity of 73.3% and a specificity of 83.3% for PEI diagnosis. Interestingly, to prove biologic plausibility, the researchers also looked at microbiome analysis and found that there was a significant increase of relative abundance of phylum Firmicutes (P < 0.05) and the genus Clostridium (P < 0.05) in the EPI group. The researchers suggested that the flow of undigested food in EPI may select for Clorstridia species, which are the main hydrogen producing bacteria in the intestine. 

 

In AZN Journal of Surgery, Chan-Min Choi, et al looked at management of palliative stage pancreatic ductal adenocarcinomas (PDAC)  in 67 patients with locally advanced or metastatic pancreatic cancer at Western Health in Melbourne.2 Weight loss and steatorrhea were present in 83.6% and 13.4% of patients, respectively, and median body mass index decreased by 13.3% from pre-illness to cancer diagnosis. Yet, despite high rates of referral to dieticians (79.1%), only 24 patients were prescribed pancreatic enzyme replacement therapy. The researchers concluded that the "study shows a lack of clear guideline for diagnosis and management of EPI for palliative PDAC.”

 

Finally a study by Johnston et al. in Gastroenterology looked at predictors of exocrine pancreatic insufficiency in 68 patients who underwent pancreatectomy (distal, n=23; pancreaticoduodenectomy, n=45).3 EPI, requiring pancreatic enzyme replacement therapy, developed in 50% of patients at 1-year postpancreatectomy. The researchers looked at predictors of EPI including variables such as preoperative A1c, smoking status, neoadjuvant chemo and radio therapy, and age, among others. In the final multivariate analysis, the only factor associated with EPI development was postoperative remnant pancreas volume (odds ratio, 0.93; 95% CI, 0.88-0.98; P < 0.01). While these studies may not immediately change practice, they offer further steps in the direction towards better diagnostics and more appropriate management of EPI.  

References 

1. Uetsuki K, Kawashima H, Ohno E, et al. Measurement of fasting breath hydrogen concentration as a simple diagnostic method for pancreatic exocrine insufficiency. BMC Gastroenterol 2021;21(1):211.

2. Choi CC-M, Choi J, Houli N, et al. Evaluation of palliative treatments in unresectable pancreatic cancer. ANZ J Surg 2021;

3. Johnston ME, Wahab SA, Turner K, et al. 298 post-pancreatectomy volumetric analysis: a missing variable in the development of post-operative endocrine and exocrine dysfunction. Gastroenterology 2021;160(6):S-878.

Akash Goel, MD
This month’s journal review of clinical research in exocrine pancreatic insufficiency includes a number of significant and practice changing contributions. The first selection appears in BMC Gastroenterology by Uetsuki, et al.1  The researcher's premise is that while EPI is a high prevalence condition, it suffers from underdiagnosis largely stemming from insufficient diagnostics for EPI. PABA excretion requires fasting and a 6 hour test. Fecal elastase has low sensitivity in those with mild to moderate EPI.  This study aimed to assess the test characteristics of fasting hydrogen breath test concentration (FBHC) as a simple outpatient diagnostic stool for the assessment of EPI.  


In the study, 60 patients were classified as having EPI based on the gold standard test of PABA excretion, then the FBHC of the two groups were compared. According to the study findings FBHC levels were higher in the EPI group 15.70 (1.4 to 77.0) ppm than in the non-PEI group 2.80 (0.7 to 28.2) ppm (P < 0.0001).  The cutoff value for FBHC of 10.7 ppm (95% CI: 0.678–0.913; P < 0.001) showed a sensitivity of 73.3% and a specificity of 83.3% for PEI diagnosis. Interestingly, to prove biologic plausibility, the researchers also looked at microbiome analysis and found that there was a significant increase of relative abundance of phylum Firmicutes (P < 0.05) and the genus Clostridium (P < 0.05) in the EPI group. The researchers suggested that the flow of undigested food in EPI may select for Clorstridia species, which are the main hydrogen producing bacteria in the intestine. 

 

In AZN Journal of Surgery, Chan-Min Choi, et al looked at management of palliative stage pancreatic ductal adenocarcinomas (PDAC)  in 67 patients with locally advanced or metastatic pancreatic cancer at Western Health in Melbourne.2 Weight loss and steatorrhea were present in 83.6% and 13.4% of patients, respectively, and median body mass index decreased by 13.3% from pre-illness to cancer diagnosis. Yet, despite high rates of referral to dieticians (79.1%), only 24 patients were prescribed pancreatic enzyme replacement therapy. The researchers concluded that the "study shows a lack of clear guideline for diagnosis and management of EPI for palliative PDAC.”

 

Finally a study by Johnston et al. in Gastroenterology looked at predictors of exocrine pancreatic insufficiency in 68 patients who underwent pancreatectomy (distal, n=23; pancreaticoduodenectomy, n=45).3 EPI, requiring pancreatic enzyme replacement therapy, developed in 50% of patients at 1-year postpancreatectomy. The researchers looked at predictors of EPI including variables such as preoperative A1c, smoking status, neoadjuvant chemo and radio therapy, and age, among others. In the final multivariate analysis, the only factor associated with EPI development was postoperative remnant pancreas volume (odds ratio, 0.93; 95% CI, 0.88-0.98; P < 0.01). While these studies may not immediately change practice, they offer further steps in the direction towards better diagnostics and more appropriate management of EPI.  

References 

1. Uetsuki K, Kawashima H, Ohno E, et al. Measurement of fasting breath hydrogen concentration as a simple diagnostic method for pancreatic exocrine insufficiency. BMC Gastroenterol 2021;21(1):211.

2. Choi CC-M, Choi J, Houli N, et al. Evaluation of palliative treatments in unresectable pancreatic cancer. ANZ J Surg 2021;

3. Johnston ME, Wahab SA, Turner K, et al. 298 post-pancreatectomy volumetric analysis: a missing variable in the development of post-operative endocrine and exocrine dysfunction. Gastroenterology 2021;160(6):S-878.

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