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Cardiac Autonomic Modulation during on-Call Duty under Working Hours Restriction

Author

Listed:
  • Jien-Wen Chien

    (Department of Pediatrics, Changhua Christian Hospital, Changhua 50006, Taiwan
    Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei 10055, Taiwan)

  • Chung-Yen Chen

    (Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taipei 10048, Taiwan)

  • Sheng-Hsuan Lin

    (Institute of Statistics, National Chiao-Tung University, Hsinchu 30010, Taiwan)

  • Shih-Wen Lin

    (Institute of Statistics, National Chiao-Tung University, Hsinchu 30010, Taiwan)

  • Yu-Hsuan Lin

    (Institute of Population Health Sciences, National Health Research Institutes, Miaoli 35053, Taiwan
    Department of Psychiatry, National Taiwan University Hospital, Taipei 10048, Taiwan
    Department of Psychiatry, College of Medicine, National Taiwan University, Taipei 10048, Taiwan
    Institute of Health Behaviors and Community Sciences, College of Public Health, National Taiwan University, Taipei 10055, Taiwan)

Abstract

Background: Medical residency is a time of high stress and long working hours, which increase the risk of cardiovascular disease. This study aimed to investigate the autonomic modulation of resident physicians throughout the on-call duty cycle. Methods: Spectral analysis of heart rate variability (HRV) was used to compute cardiac parasympathetic modulation (high-frequency power, HF) and cardiac sympathetic modulation (normalized low-frequency power, LF%, and the ratio of LF and HF, LF/HF) of 18 residents for a consecutive 4-day cycle. Results: Male residents show reduced cardiac sympathetic modulation (i.e., higher LF/HF and LF%) than the female interns. Medical residents’ cardiac parasympathetic modulation (i.e., HF) significantly increased on the first and the second post-call day compared with the pre-call day. In contrast, LF% was significantly decreased on the first and the second post-call day compared with the pre-call day. Similarly, LF/HF was significantly decreased on the second post-call day compared with the pre-call day. LF/HF significantly decreased on the first post-call day and on the second post-call day from on-call duty. Conclusion: The guideline that limits workweeks to 80 h and shifts to 28 h resulted in reduced sympathetic modulation and increased parasympathetic modulation during the two days following on-call duty.

Suggested Citation

  • Jien-Wen Chien & Chung-Yen Chen & Sheng-Hsuan Lin & Shih-Wen Lin & Yu-Hsuan Lin, 2020. "Cardiac Autonomic Modulation during on-Call Duty under Working Hours Restriction," IJERPH, MDPI, vol. 17(3), pages 1-12, February.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:3:p:1118-:d:318648
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    Cited by:

    1. Yu-Hsuan Lin & Kuan-I Lin & Yuan-Chien Pan & Sheng-Hsuan Lin, 2020. "Investigation of the Role of Anxiety and Depression on the Formation of Phantom Vibration and Ringing Syndrome Caused by Working Stress during Medical Internship," IJERPH, MDPI, vol. 17(20), pages 1-10, October.

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