• Petter Nyström, Martin Nordberg, and Lennart Boström.
• Department of Surgery, South General Hospital (Södersjukhuset), Stockholm, Sweden. petter.nystrom@regionstockholm.se.
• Eur J Trauma Emerg Surg. 2024 Jun 1; 50 (3): 791798791-798.

PurposeAppendicitis is one of the most common acute surgical conditions globally, and hence appendectomy is a common procedure performed around the clock in many hospitals. The aim of the current study was to determine whether acute appendectomy due to acute appendicitis performed during day, evening, and night was equally safe, in terms of postoperative complications, readmission, death, and length of hospital stay.MethodsA retrospective single-center cohort study, using a local quality register of all consecutive acute appendectomies performed at the Department of Surgery, Södersjukhuset, Stockholm, Sweden. During the study period from December 2015 to August 2022, 4950 patients were included. Risk of complications, readmission, and death were determined using multivariable logistic regression models. Association with length of hospital stay was determined using multiple linear regression.ResultsThere was no significant difference in the associated risk of postoperative complications, readmission within 30 days, or death, regardless of when appendectomy was performed. Using daytime surgery as reference, hospital stay was shortened by 4.21 h (P = 0.008) for evening surgery and by 6.71 h (P < 0.001) for nightly surgery.ConclusionRisks of postoperative complications, readmission, and death were similar regardless of when acute appendectomy was performed. However, surgery during evening and night was associated with shortened hospital stay, as compared to daytime surgery.© 2023. The Author(s).

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