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Objectives: We describe the methodology of Post-Acute Pancreatitis Pancreatic Exocrine Insufficiency (PAPPEI), a prospective, observational, multicenter cohort study. The objectives of PAPPEI are to estimate the incidence rate of post-acute pancreatitis (AP) pancreatic exocrine insufficiency (PEI), define factors that determine the development of post-AP PEI, and evaluate the impact of post-AP PEI on nutritional status and quality of life., Methods: Enrollment started in June 2017 in 3 expert academic centers in the United States. Data were collected during hospitalization (baseline) at 3 and 12 months after enrollment. Fecal elastase-1 was used to assess PEI. Study questionnaires are completed by patient interview and review of electronic medical records. Blood is obtained to evaluate vitamin deficiencies and nutritional markers., Results: As of August 2020, 77 subjects have completed the baseline evaluation. The median age was 58 years (interquartile range, 39-67 years), 38% were male, and 90% were white. The etiology of AP was biliary in 39 subjects (51%), and 51 subjects (66%) had mild AP. Three- and 12-month follow-up data have been collected in 29 and 13 subjects, respectively., Conclusion: The PAPPEI study aims to expand our understanding of post-AP PEI incidence, including its impact on nutritional status and quality of life., Competing Interests: The authors declare no conflict of interest., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

Introduction: Studies evaluating the natural history of exocrine pancreatic dysfunction (EPD) after acute pancreatitis (AP) are sparse. This study aims to assess incidence and predictors of weight loss and gastrointestinal (GI) symptoms suggestive of EPD 12 months after an AP episode., Methods: Patients enrolled in the Pancreatitis-associated Risk of Organ Failure Study at the time of an AP episode were included. Weight and GI symptom data were prospectively collected by self-report at enrollment and at 3- and 12-month (windows 2-7 and 8-20) telephone follow-ups. Multivariable logistic regression was used to assess factors associated with ≥10% total body weight loss (EPD surrogate) at 12 months. A generalized estimating equation was used to measure each factor's population effect (in pounds) over 12 months after AP., Results: Follow-up at 12 months in 186 patients (median age = 54 years, 46% men, 45% biliary, 65% first AP attack) revealed weight loss ≥10% from baseline, occurring in 44 patients (24%). Risk of weight loss increased with higher baseline body mass index, previous diagnosis of diabetes mellitus, and worsening AP severity (all P < 0.010). GI symptoms were reported in 13/31 (42%) patients at 12 months. AP severity was independently associated with ≥10% weight loss at 12 months. Over 12 months, men lost more weight than women (average 9.5 lbs); patients with severe AP lost, on average, 14 lbs., Discussion: Weight loss after AP occurs in one-quarter of patients and is associated with AP severity. EPD incidence after AP is likely underappreciated. Further work is needed to assess EPD and potential for pancreatic enzyme supplementation., (Copyright © 2020 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The American College of Gastroenterology.)