NDLI: Increased night duty loading of physicians caused elevated blood pressure and sympathetic tones in a dose-dependent manner

Content Provider	Springer Nature Link
Author	Lee, Hsiu Hao Lo, Shih Hsiang Chen, Bing Yu Lin, Yen Hung Chu, Dachen Cheng, Tsun Jen Chen, Pau Chung Guo, Yue Liang
Copyright Year	2015
Abstract	Night duty has been recognized as a significantly harmful stressor for physicians. However, the relationship between various levels of duty loading and stress response is unknown. This study examined whether duty load increases cardiovascular stress indicators in a dose-dependent manner.An unallocated prospective observational study was conducted among physicians performing various levels of duties in a secondary referral medical center between 2011 and 2012. Heart rate variability (HRV), blood pressure (BP), and other stress markers of 12 attending physicians were compared during different duty loads: non-duty day (NDD), duty day with one duty area and three wards (1DD), and duty day with two duty areas and six wards (2DD).During the regular sleep time (i.e., 11 p.m. to 5 a.m.), the relative sympathetic modulations measured using the HRV were 59.0 ± 9.3, 61.6 ± 10.4, and 64.4 ± 8.9 for NDD, 1DD, and 2DD, respectively (p = 0.0012); those for relative parasympathetic modulations were 37.4 ± 9.4, 34.8 ± 9.8, and 32.0 ± 8.8 for NDD, 1DD, and 2DD, respectively (p = 0.0015). The percentages of abnormal systolic BPs were 9.7 ± 13.2 %, 25.3 ± 21.8 %, and 31.5 ± 21.0 % for NDD, 1DD, and 2DD, respectively (p = 0.003), and the percentages of abnormal diastolic BP were 6.7 ± 11.0 %, 18.3 ± 11.1 %, and 27.1 ± 30.9 % for NDD, 1DD, and 2DD, respectively (p = 0.002). Total sleep time was negatively associated with sympathetic/parasympathetic balance and the percentage of abnormal diastolic BP. Admitting new patients was positively associated with the percentages of abnormal systolic BP.This observational analysis suggests that the dose-dependent stress responses of the cardiovascular system in physicians were caused by the duty load.
Starting Page	413
Ending Page	423
Page Count	11
File Format	PDF
ISSN	03400131
Journal	International Archives of Occupational and Environmental Health
Volume Number	89
Issue Number	3
e-ISSN	14321246
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-08-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Duty loading Stress response Physician Cardiovascular disease Environmental Health Rehabilitation Occupational Medicine/Industrial Medicine
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health

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