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Effect of reducing interns' weekly work hours on sleep and attentional failures

Lockley, S.W., Cronin, J.W., Evans, E.E., Cade, B.E., Lee, C.J., Landrigan, C.P., Rothschild, J.M., Katz, J.T., Lilly, C.M., Stone, P.H. , Aeschbach, D. and Czeisler, C.A. (2004) Effect of reducing interns' weekly work hours on sleep and attentional failures New England Journal of Medicine, 351 (18). 1829-1837+1922.

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Abstract

BACKGROUND: Knowledge of the physiological effects of extended (24 hours or more) work shifts in postgraduate medical training is limited. We aimed to quantify work hours, sleep, and attentional failures among first-year residents (postgraduate year 1) during a traditional rotation schedule that included extended work shifts and during an intervention schedule that limited scheduled work hours to 16 or fewer consecutive hours. METHODS: Twenty interns were studied during two three-week rotations in intensive care units, each during both the traditional and the intervention schedule. Subjects completed daily sleep logs that were validated with regular weekly episodes (72 to 96 hours) of continuous polysomnography (r= 0.94) and work logs that were validated by means of direct observation by study staff (r=0.98). RESULTS: Seventeen of 20 interns worked more than 80 hours per week during the traditional schedule (mean, 84.9; range, 74.2 to 92.1). All interns worked less than 80 hours per week during the intervention schedule (mean, 65.4; range, 57.6 to 76.3). On average, interns worked 19.5 hours per week less (P<0.001), slept 5.8 hours per week more (P<0.001), slept more in the 24 hours preceding each working hour (P<0.001), and had less than half the rate of attentional failures while working during on-call nights (P=0.02) on the intervention schedule as compared with the traditional schedule. CONCLUSIONS: Eliminating interns' extended work shifts in an intensive care unit significantly increased sleep and decreased attentional failures during night work hours. Copyright © 2004 Massachusetts Medical Society.

Item Type: Article
Authors :
NameEmailORCID
Lockley, S.W.s.lockley@surrey.ac.uk
Cronin, J.W.
Evans, E.E.
Cade, B.E.
Lee, C.J.
Landrigan, C.P.
Rothschild, J.M.
Katz, J.T.
Lilly, C.M.
Stone, P.H.
Aeschbach, D.
Czeisler, C.A.
Date : 2004
DOI : 10.1056/NEJMoa041404
Uncontrolled Keywords : article, attention, continuing education, intensive care unit, medical education, polysomnography, priority journal, shift worker, sleep, work schedule, workload, adult, comparative study, female, human, internal medicine, male, NASA Discipline Space Human Factors, Non-NASA Center, organization and management, pathophysiology, personnel management, physiology, sleep deprivation, work schedule, NASA Discipline Space Human Factors, Non-NASA Center, Adult, Attention, Female, Humans, Intensive Care Units, Internal Medicine, Internship and Residency, Male, Personnel Staffing and Scheduling, Polysomnography, Sleep, Sleep Deprivation, Work Schedule Tolerance, Workload
Depositing User : Clive Harris
Date Deposited : 17 Jun 2020 02:01
Last Modified : 17 Jun 2020 02:01
URI: http://epubs.surrey.ac.uk/id/eprint/857949

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