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Effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and performance on a psychometric test in emergency registrars.
Emerg Med Australas. 2012 Jun; 24(3):251-9.EM

Abstract

OBJECTIVE

To evaluate the effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and psychomotor performance in a group of Australian emergency registrars.

METHODS

A prospective observational study with a repeated within-subjects component was conducted. Sleep time was determined using sleep diaries and activity monitors. Subjective fatigue levels and reciprocal reaction times were evaluated before and after day and night shifts.

RESULTS

A total of 11 registrars participated in the study with 120 shifts analysed. Sleep time was found to be similar during consecutive night and day shifts. The mean number of hours spent awake before the end of a night shift was 14.33. Subjective fatigue scores were worst at the end of a night shift. There was no difference in reciprocal reaction time between the end of night shift and the start of day shift.

CONCLUSIONS

Registrars sleep a similar amount of time surrounding night and day shifts. Despite reporting the highest levels of fatigue at the end of a night shift, there is no significant difference in reaction times at the end of night shift compared with the beginning of day shift. This correlates with the finding that at the end of night shift the registrars have been awake for less than 16 h, which is the point at which psychomotor performance is expected to decline.

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Authors+Show Affiliations

Haire JC
Department of Emergency Medicine, Royal Hobart Hospital, Liverpool St., Hobart, Tasmania, Australia. julia.haire@dhhs.tas.gov.au
Ferguson SA
No affiliation info available
Tilleard JD
No affiliation info available
Negus P
No affiliation info available
Dorrian J
No affiliation info available
Thomas MJ
No affiliation info available

MeSH

AdultAustraliaFatigueFemaleHumansMaleMedical Staff, HospitalProspective StudiesPsychometricsRegression AnalysisSleepWakefulnessWork Schedule ToleranceWorkload

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22672165

Citation

Haire, Julia Christine Lydia, et al. "Effect of Working Consecutive Night Shifts On Sleep Time, Prior Wakefulness, Perceived Levels of Fatigue and Performance On a Psychometric Test in Emergency Registrars." Emergency Medicine Australasia : EMA, vol. 24, no. 3, 2012, pp. 251-9.
Haire JC, Ferguson SA, Tilleard JD, et al. Effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and performance on a psychometric test in emergency registrars. Emerg Med Australas. 2012;24(3):251-9.
Haire, J. C., Ferguson, S. A., Tilleard, J. D., Negus, P., Dorrian, J., & Thomas, M. J. (2012). Effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and performance on a psychometric test in emergency registrars. Emergency Medicine Australasia : EMA, 24(3), 251-9. https://doi.org/10.1111/j.1742-6723.2012.01533.x
Haire JC, et al. Effect of Working Consecutive Night Shifts On Sleep Time, Prior Wakefulness, Perceived Levels of Fatigue and Performance On a Psychometric Test in Emergency Registrars. Emerg Med Australas. 2012;24(3):251-9. PubMed PMID: 22672165.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and performance on a psychometric test in emergency registrars. AU - Haire,Julia Christine Lydia, AU - Ferguson,Sally Anne, AU - Tilleard,James D, AU - Negus,Paul, AU - Dorrian,Jillian, AU - Thomas,Matthew Jw, Y1 - 2012/02/21/ PY - 2012/6/8/entrez PY - 2012/6/8/pubmed PY - 2012/9/19/medline SP - 251 EP - 9 JF - Emergency medicine Australasia : EMA JO - Emerg Med Australas VL - 24 IS - 3 N2 - OBJECTIVE: To evaluate the effect of working consecutive night shifts on sleep time, prior wakefulness, perceived levels of fatigue and psychomotor performance in a group of Australian emergency registrars. METHODS: A prospective observational study with a repeated within-subjects component was conducted. Sleep time was determined using sleep diaries and activity monitors. Subjective fatigue levels and reciprocal reaction times were evaluated before and after day and night shifts. RESULTS: A total of 11 registrars participated in the study with 120 shifts analysed. Sleep time was found to be similar during consecutive night and day shifts. The mean number of hours spent awake before the end of a night shift was 14.33. Subjective fatigue scores were worst at the end of a night shift. There was no difference in reciprocal reaction time between the end of night shift and the start of day shift. CONCLUSIONS: Registrars sleep a similar amount of time surrounding night and day shifts. Despite reporting the highest levels of fatigue at the end of a night shift, there is no significant difference in reaction times at the end of night shift compared with the beginning of day shift. This correlates with the finding that at the end of night shift the registrars have been awake for less than 16 h, which is the point at which psychomotor performance is expected to decline. SN - 1742-6723 UR - https://www.unboundmedicine.com/medline/citation/22672165/Effect_of_working_consecutive_night_shifts_on_sleep_time_prior_wakefulness_perceived_levels_of_fatigue_and_performance_on_a_psychometric_test_in_emergency_registrars_ L2 - https://doi.org/10.1111/j.1742-6723.2012.01533.x DB - PRIME DP - Unbound Medicine ER -