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Ann Thorac Surg 2004;78:906-911
© 2004 The Society of Thoracic Surgeons

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Original article: cardiovascular

Sleep deprivation does not affect operative results in cardiac surgery

^a Department of Cardiovascular Surgery, University of Virginia, Charlottesville, Virginia, USA

Accepted for publication April 1, 2004.

^* Address reprint requests to Dr Kron, 490 Lane Rd, Building MR4, Suite 3116, Charlottesville, VA 22908, USA
ilk{at}virginia.edu

Presented at the Fortieth Annual Meeting of The Society of Thoracic Surgeons, San Antonio, TX, Jan 26–28, 2004.

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.

This article has been cited by other articles:

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				I. L. Kron and P. I. Ellman Reply Ann. Thorac. Surg., December 1, 2005; 80(6): 2420 - 2421. [Full Text] [PDF]

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