Elevated Blood Pressure, Decreased Heart Rate Variability and Incomplete Blood Pressure Recovery After a 12-Hour Night Shift Work

Details

• Personal Author:
  Baker, Dean B. ; Chen C-F ; Chen M-F ; Hwang W-C ; Lin L-Y ; Schnall PL ; Su T-C ; Wang J-D
• Description:
  Shift work has been associated with increased risk of cardiovascular disease. This study was designed to determine the hemodynamic effects of 12-hour (12-h) shifts, and changes in blood pressure (BP) and heart rate variability (HRV) during 36 h rest time following 12-h shifts. Fifteen male shift workers with a mean age of 32.9 yr were recruited from a semiconductor factory. Ambulatory BP (AmBP) monitoring was performed for a total of 48 h for each participant. Six workers were monitored for 48 h by Holter electrocardiogram on both the day and night shifts. Paired self-comparison was used to estimate the difference between two hourly measurements of 12-h BP, HR, and HRV using the same timetable intra-individually. We also applied mixed models to estimate the effects of 12-h shifts on the delayed recovery of BP and heart rate (HR) in six workers who completed 96-h AmBP monitoring, including a 48-h night shift-rest period and another day shift period. Results showed that 12-h night shift work gave a persistently elevated systolic and diastolic BP (SBP and DBP) and HR, and decreased HRV compared to 12-h day shift work with the corresponding resting time. In addition, there was delayed SBP and DBP recovery on the first 12-h rest time in night shift workers, which was further demonstrated on the second 12-h rest time after adjustment for possible confounders through mixed models. In conclusion, 12-h night shift work may elevate BP and HR and decrease HRV. It is also associated with delayed BP recovery. [Description provided by NIOSH]
• Subjects:
  Cardiovascular System Manufacturing And Industrial Facilities Occupational Health Safety Shift Work Schedule
• Keywords:
  12-hour Night Shift Work Author Keywords: Blood Pressure Blood Pressure Cardiovascular Function Delayed Recovery Factory Workers Heart Rate Heart Rate Variability Shift Work Shift Workers Work Intervals

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• ISSN:
  1341-9145
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  380-386
• Volume:
  50
• Issue:
  5
• NIOSHTIC Number:
  nn:20058486
• Citation:
  J Occup Health 2008 Sep; 50(5):380-386
• Contact Point Address:
  J.-D. Wang, College of Public Health, National Taiwan University, Rm. 719, No. 17, Xu-Zhou Road, Taipei 10020, Taiwan
• Email:
  jdwang@ntu.edu.tw
• Federal Fiscal Year:
  2008
• Performing Organization:
  University of California Los Angeles
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Occupational Health
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:19796707c0f186fa086114ba334b313ea0c70058b369d31283fd0ca163938ad27ec0e392cc071580d8a23dd8142b11f632fbae707ad1fd2e7bf3c23a37cfbe16
• Download URL:
  https://stacks.cdc.gov/view/cdc/221573/cdc_221573_DS1.pdf
• File Type:
  [PDF - 540.94 KB ]