• Arch Surg · Jul 2012

    Worse outcomes in patients undergoing urgent surgery for left-sided diverticulitis admitted on weekends vs weekdays: a population-based study of 31 832 patients.

    • Mathias Worni, Inge M Schudel, Truls Østbye, Anand Shah, Aarti Khare, Ricardo Pietrobon, Julie K Marosky Thacker, and Ulrich Guller.
    • Research on Research Group, Department of Surgery, Duke University Medical Center, 2301 Erwin Rd, Durham, NC 27710, USA. mathias.worni@duke.edu
    • Arch Surg. 2012 Jul 1;147(7):649-55.

    HypothesisAmong patients undergoing urgent surgery for left-sided diverticulitis, those admitted on weekends vs weekdays have higher rates of Hartmann procedure and adverse outcomes.DesignAnalysis of data from the Nationwide Inpatient Sample between January 2002 and December 2008. Unadjusted and risk-adjusted generalized linear regression models were used.SettingAcademic research.PatientsData on patients undergoing urgent surgery for acute diverticulitis.Main Outcome MeasuresRates of Hartmann procedure vs primary anastomosis, complications, length of hospital stay, and total hospital charges.ResultsIn total, 31 832 patients were included; 7066 (22.2%) were admitted on weekends, and 24 766 (77.8%) were admitted on weekdays. The mean (SD) age of patients was 60.8 (15.3) years, and 16 830 (52.9%) were female. A Hartmann procedure was performed in 4580 patients (64.8%) admitted on weekends compared with 13 351 patients (53.9%) admitted on weekdays (risk-adjusted odds ratio [OR], 1.57; P < .001). In risk-adjusted analyses, patients admitted on weekends had significantly higher risk for any postoperative complication (OR, 1.10; P = .005) and nonroutine hospital discharge (OR, 1.33; P < .001) compared with patients admitted on weekdays, as well as a median length of hospital stay that was 0.5 days longer and median total hospital charges that were $3734 higher (P < .001 for both).ConclusionsPatients undergoing urgent surgery for left-sided diverticulitis who are admitted on a weekend have a higher risk for undergoing a Hartmann procedure and worse short-term outcomes compared with patients who are admitted on a weekday. Further research is warranted to investigate possible underlying mechanisms and to develop strategies for reducing this substantial weekend effect.

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