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Shift Work Is Not Associated with High Blood Pressure or Prevalence of Hypertension

Author

Listed:
  • Carla Sfreddo
  • Sandra Costa Fuchs
  • Álvaro Roberto Merlo
  • Flávio Danni Fuchs

Abstract

Background: Working mostly at night has been suggested to be associated with upset of chronobiological rhythms and high blood pressure, but the evidence from epidemiological studies is weak. Methods: In a cross-sectional survey, we evaluated the association between shift work and blood pressure, pre-hypertension and hypertension. In total, 493 nurses, nurse technicians and assistants, were selected at random in a large general hospital setting. Hypertension was diagnosed by the mean of four automatic blood pressure readings ≥140/90 mmHg or use of blood pressure lowering agents, and pre-hypertension by systolic blood pressure ≥120–139 or diastolic blood pressure ≥80–89 mmHg. Risk factors for hypertension were evaluated by a standardized questionnaire and anthropometric measurements. The association between the shift of work and blood pressure, pre-hypertension and hypertension was explored using univariate and multivariate analyses that controlled for risk factors for hypertension by covariance analysis and modified Poisson regression. Results: The mean age of the participants was 34.3±9.4 years and 88.2% were women. Night shift workers were older, more frequently married or divorced, and less educated. The prevalence of hypertension in the whole sample was 16%, and 28% had pre-hypertension. Blood pressure (after adjustment for confounding) was not different in day and night shift workers. The prevalence of hypertension and pre-hypertension by shift work was not different in the univariate analysis and after adjustment for confounding (all risk ratios = 1.0). Conclusion: Night shift work did not increase blood pressure and was not associated with hypertension or pre-hypertension in nursing personnel working in a large general hospital.

Suggested Citation

  • Carla Sfreddo & Sandra Costa Fuchs & Álvaro Roberto Merlo & Flávio Danni Fuchs, 2010. "Shift Work Is Not Associated with High Blood Pressure or Prevalence of Hypertension," PLOS ONE, Public Library of Science, vol. 5(12), pages 1-5, December.
  • Handle: RePEc:plo:pone00:0015250
    DOI: 10.1371/journal.pone.0015250
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    Cited by:

    1. Tomasz Sobierajski & Stanisław Surma & Monika Romańczyk & Maciej Banach & Suzanne Oparil, 2023. "Knowledge of Primary Care Patients Living in the Urban Areas about Risk Factors of Arterial Hypertension," IJERPH, MDPI, vol. 20(2), pages 1-17, January.
    2. Yanjun Guo & Yuewei Liu & Xiji Huang & Yi Rong & Meian He & Youjie Wang & Jing Yuan & Tangchun Wu & Weihong Chen, 2013. "The Effects of Shift Work on Sleeping Quality, Hypertension and Diabetes in Retired Workers," PLOS ONE, Public Library of Science, vol. 8(8), pages 1-6, August.
    3. Kai Lu & Jia Chen & Li Wang & Changying Wang & Rongjing Ding & Shouling Wu & Dayi Hu, 2017. "Association of Sleep Duration, Sleep Quality and Shift-Work Schedule in Relation to Hypertension Prevalence in Chinese Adult Males: A Cross-Sectional Survey," IJERPH, MDPI, vol. 14(2), pages 1-12, February.
    4. Sara Gamboa Madeira & Carina Fernandes & Teresa Paiva & Carlos Santos Moreira & Daniel Caldeira, 2021. "The Impact of Different Types of Shift Work on Blood Pressure and Hypertension: A Systematic Review and Meta-Analysis," IJERPH, MDPI, vol. 18(13), pages 1-19, June.
    5. Jaymen L. Elliott & Sara Lal, 2016. "Blood Pressure, Sleep Quality and Fatigue in Shift Working Police Officers: Effects of a Twelve Hour Roster System on Cardiovascular and Sleep Health," IJERPH, MDPI, vol. 13(2), pages 1-8, January.

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