• Faisal Jehan, Muhammad Khan, Narong Kulvatunyou, Mohammad Hamidi, Lynn Gries, Muhammad Zeeshan, Terence O'Keeffe, and Bellal Joseph.
• Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona.
• J. Surg. Res. 2019 Jan 1; 233: 192-198.

BackgroundThe aim of our study was to evaluate outcomes in patients who are admitted on weekend compared with those admitted on a weekday for acute gallstone pancreatitis.MethodsWe performed a 3-y (2010-2012) analysis of the Nationwide Inpatient Sample database. Patients with acute gallstone pancreatitis who underwent endoscopic retrograde cholangiopancreatography (ERCP) were included and were divided into two groups: admission on the weekend versus the weekday. Primary outcome measures were time to ERCP, adverse events, and mortality. Secondary outcome measures were hospital length of stay and total cost.ResultsA total of 5803 patients with acute gallstone pancreatitis who underwent ERCP were included in our study; of which 22.6% were admitted on the weekend, whereas 77.4% were admitted on a weekday. Mean age was 57 ± 18 y and 57.1% were female. Within 24 h, the rate of ERCP was higher in patients admitted on the weekday compared with those admitted on the weekend (40% versus 24%; P < 0.001). Similarly, by 48 h, the rate of ERCP was higher in the weekday group (69% versus 49%, P < 0.001). Patients admitted over the weekends had higher complications rate (P = 0.03), hospital length of stay (P < 0.001), and the total cost of hospitalization (P < 0.001) compared with the weekday group with no difference in in-hospital mortality.ConclusionsPatients admitted on weekends for acute gallstone pancreatitis experience a delay in getting ERCP and have higher complications, prolonged hospital stay, and increased hospital costs compared with those admitted on weekdays.Copyright © 2018 Elsevier Inc. All rights reserved.

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