Incidence, Burden, and Predictors of Readmission for Acute Alcoholic Pancreatitis: A National Analysis over 11 Months.

BACKGROUND/OBJECTIVES: Data regarding incidence, health-care burden, and predictors for readmission in patients with acute alcoholic pancreatitis (AAP) is scarce. We aim to identify incidence, health-care burden, and predictors of readmission over an 11-month period. METHODS: Retrospective cohort study using the 2016 National Readmission Database of adult patients admitted with a principal diagnosis of AAP in January and 11-month readmission follow up for all-cause readmission. Incidence of all-cause readmission, mortality rate, morbidity, length of stay (LOS), total hospitalization charges and costs were evaluated. Independent risk factors for all-cause readmission were identified using a Cox multivariate logistic regression analysis. RESULTS: A total of 6633 patients were included in the study. The mean age was 45.7 years and 28.9% of patients were female. 73.1% of patients had a modified BISAP score of 0. The 11-month readmission rate was 43.1%. The main cause of readmission was another episode of AAP. The mortality rate of readmission was 0.5% and the mortality rate during the index admission (IA) was 1.1% (P = 0.03). The mean LOS, total hospitalization charges and costs for readmission were 4.5 days, $34,307 and $8958, respectively. Independent predictors of readmission were Charlson Comorbidity Index score of ≥ 3, associated chronic alcoholic pancreatitis, and chronic pancreatitis (CP) from other causes. CONCLUSION: Among patients admitted with AAP, the 11-month readmission rate was 43.1%. Over one-third of readmissions were due to another episode of AAP. Readmission associated with significant resource utilization. Special attention should be placed in patients with underlying CP due to the increased risk of readmission.