• Arezou Yaghoubian, Guy Saltmarsh, David K Rosing, Roger J Lewis, Bruce E Stabile, and Christian de Virgilio.
• Department of Surgery, Harbor-UCLA Medical Center, Torrance, CA 90509, USA.
• Arch Surg. 2008 Sep 1; 143 (9): 847-51; discussion 851.

BackgroundConsiderable concern has been raised about the effects of restricted duty hours on surgical training. However, to our knowledge, the effect of the 80-hour resident workweek on operative outcomes after laparoscopic cholecystectomy has not been well studied.ObjectiveTo compare the rates of bile duct injury and overall complications after laparoscopic cholecystectomy before and after the institution of the duty-hour restriction.DesignRetrospective review of patient medical records to determine morbidity and mortality before (January 1, 2000, to June 30, 2003; period 1) and after (July 1, 2003, to June 30, 2006; period 2) implementation of duty hour limitations.SettingMajor public teaching hospital.PatientsA total of 2470 patients who had undergone laparoscopic cholecystectomy.Main Outcome MeasuresBile duct injury and overall complication rates as determined using multivariate analysis.ResultsOverall, 2470 laparoscopic cholecystectomy procedures were performed, including 1353 in period 1 and 1117 in period 2. In period 2, more patients had acute cholecystitis as the indication for surgery (49% vs 35% in period 1, P < .001), and a higher percentage of patients were male (22% vs 18%, P = .01). The incidence of bile duct injury and total complications decreased in period 2 from 1% to 0.4%(P = .04) and from 5% to 2% (P < .001), respectively. Mortality was unchanged. Multivariate analysis revealed that period 2 was protective for bile duct injury (odds ratio, 0.31; 95% confidence interval, 0.1-0.96; P = .04). For complications, both female sex (odds ratio, 0.62; 95% confidence interval, 0.38-0.9) and surgery during period 2 (odds ratio, 0.46; 95% confidence interval, 0.28-0.75) were protective, whereas older age (odds ratio, 1.03; 95% confidence interval, 1.02-1.05) was associated with complications.ConclusionAt a major public teaching hospital, the bile duct injury rate and the overall complication rate decreased after implementation of the 80-hour workweek.

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