Sleep deprivation does not affect operative results in cardiac surgery

Peter I. Ellman, Marianna G. Law, Carlos Tache-Leon, T. Brett Reece, Thomas S. Maxey, Benjamin B. Peeler, John A. Kern, Curtis G. Tribble, Irving L. Kron

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


Background There has been an increasing trend towards the mandatory reduction in work hours for physicians because of the fear that sleep-deprived (SD) surgeons are more prone to make mistakes. We hypothesized that sleep deprivation would not be associated with increased morbidity or mortality in cardiac operations. Methods A retrospective review was done of all cases performed by all attending cardiac surgeons from January 1994 to April 2003. Complication rates of cases performed by SD surgeons were compared with cases done when the surgeons were not sleep-deprived (NSD). A surgeon was deemed sleep deprived if he or she performed a case the previous evening that started between 10:00 PM and 5:00 AM, or ended between the hours of 11:00 PM and 7:30 AM. Results A total of 6,751 cases were recorded in the Society of Thoracic Surgeons database over the 9-year period examined. Of these, 339 cases (5%) were performed by SD surgeons, and 6,412 (95%) cases were performed by NSD surgeons. Mortality rates for coronary artery bypass operations showed no significant differences (1.7% [SD = 4/223] vs 3.1% [NSD = 133/4206)] p = 0.34). Operative (p = 0.47), pulmonary (p = 0.60), renal (p = 0.93), neurologic (p = 0.11), and infectious (p = 0.87) complications of all cases also failed to show any statistically significant differences in any group. Perfusion times, cross-clamp times, and the use of blood products were also similar between groups. Conclusions Sleep deprivation does not affect operative morbidity or mortality in cardiac surgical operations. These data do not support a need for work hour restrictions on surgeons.

Original languageEnglish (US)
Pages (from-to)906-911
Number of pages6
JournalAnnals of Thoracic Surgery
Issue number3
StatePublished - Sep 2004


  • 4

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine


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