Effects of sleep hours and fatigue on performance in laparoscopic surgery simulators

Jaisa Olasky, Amine Chellali, Ganesh Sankaranarayanan, Likun Zhang, Amie Miller, Suvranu De, Daniel B. Jones, Steven D. Schwaitzberg, Benjamin E. Schneider, Caroline G.L. Cao

Research output: Contribution to journalArticlepeer-review


Background: Studies on a virtual reality simulator have demonstrated that sleep-deprived residents make more errors. Work-hour restrictions were implemented, among other reasons, to ensure enough sleep time for residents. The objective of this study was to assess the effects of sleep time, perceived fatigue, and experience on surgical performance. We hypothesized that performance would decrease with less sleep and fatigue, and that experienced surgeons would perform better than less experienced surgeons despite sleep deprivation and fatigue. Methods: Twenty-two surgical residents and attendings performed a peg transfer task on two simulators: the Fundamentals of Laparoscopic Skills (FLS) trainer and the Virtual Basic Laparoscopic Surgical Trainer (VBLaST

Original languageEnglish (US)
Pages (from-to)2564-2568
Number of pages5
JournalSurgical endoscopy
Issue number9
StatePublished - Sep 2014
Externally publishedYes


  • Fatigue
  • Performance
  • Simulation
  • Work-hour restrictions

ASJC Scopus subject areas

  • Surgery


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