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[Variability of heart rate]

A Longo1, D Ferreira, M J Correia

  • 1Serviço Titulado em Cardiologia, UTIC-AC do Hospital de Santa Maria de Lisboa.

Revista Portuguesa De Cardiologia : Orgao Oficial Da Sociedade Portuguesa De Cardiologia = Portuguese Journal of Cardiology : an Official Journal of the Portuguese Society of Cardiology
|March 1, 1995
PubMed
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Heart rate variability (HRV) analysis, a non-invasive method, assesses autonomic nervous system control of the heart. Decreased HRV indicates higher mortality risk, especially after myocardial infarction and in diabetes.

Area of Science:

  • Physiology
  • Autonomic Nervous System
  • Cardiovascular Health

Context:

  • Heart rate variability (HRV) analysis offers insights into the autonomic nervous system's regulation of cardiac function.
  • The autonomic nervous system, comprising sympathetic and parasympathetic branches, modulates heart rate and its oscillations.
  • Understanding HRV is crucial for assessing cardiac autonomic balance.

Purpose:

  • To discuss the physiological mechanisms of heart rate variability.
  • To evaluate methods for assessing heart rate variability.
  • To present an overview of the clinical utility of heart rate variability.

Summary:

  • Heart rate variability analysis is a non-invasive technique to investigate autonomic control of the heart.
  • Reduced heart rate variability is linked to increased mortality in conditions like diabetes and post-myocardial infarction.

Related Experiment Videos

  • Abnormal heart rate variability is observed in hypertension, heart failure, and neurologic diseases, warranting further clinical investigation.

    • Impact:

    • Heart rate variability analysis serves as a valuable index of cardiac autonomic balance.
    • It holds significant clinical value for diagnostic and prognostic purposes.
    • Future widespread clinical use is anticipated for monitoring and guiding therapeutic interventions.