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Heart rate variability changes in physicians working on night call.

Birgitta Malmberg1, Roger Persson, Per Flisberg

  • 1Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 85, Lund, Sweden. birgitta.malmberg@med.lu.se

International Archives of Occupational and Environmental Health
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PubMed
Summary
This summary is machine-generated.

Physician heart rate variability (HRV) recovery differs by specialty after night call. Anaesthesiologists showed higher physiological stress, suggesting a need to optimize night-call schedules for improved physician well-being.

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Area of Science:

  • Occupational Health
  • Cardiology
  • Physiology

Background:

  • Night-call duty presents significant occupational health challenges for physicians.
  • Heart rate variability (HRV) is a key indicator of autonomic balance and physiological stress.

Purpose of the Study:

  • To compare HRV recovery patterns after day work and night-call duty between anaesthesiologists and paediatricians/ENT surgeons.
  • To investigate the impact of night-call duty on autonomic balance in different physician specialities.

Main Methods:

  • Ambulatory digital Holter ECG monitoring was used to assess HRV in 19 anaesthesiologists (ANEST) and 16 paediatricians/ENT surgeons (PENT).
  • HRV was analyzed during specific evening time slots: after an ordinary workday, during night call, and post-night call.
  • Absolute and normalized high-frequency power (HF, HFnu), reflecting parasympathetic activity, were the primary outcome measures.

Main Results:

  • Anaesthesiologists exhibited lower high-frequency power (HF) compared to paediatricians/ENT surgeons during night call and post-daytime work.
  • The whole group of physicians showed reduced normalized high-frequency power (HFnu) during call and post-daytime work compared to post-night call.
  • No significant difference in HRV was observed between specialities post-night call.

Conclusions:

  • Physiological recovery, as indicated by HRV patterns (HFnu), appears sufficient after night duty and does not significantly differ between the studied physician specialities.
  • Anaesthesiologists demonstrated less dynamic HRV during night call and after daytime work, suggesting a potentially higher physiological stress level.
  • Findings may inform the optimization of night-call schedules to mitigate occupational stress in healthcare professionals.