Resumo

VELOZA, Laura et al. Heart rate variability as a predictive factor of cardiovascular diseases. Rev. Colomb. Cardiol. [online]. 2019, vol.26, n.4, pp.205-210. ISSN 0120-5633.  https://doi.org/10.1016/j.rccar.2019.01.006.

Heart rate variability is defined as the variation in time between the RR intervals of the electrocardiogram, and reflects the activity of the autonomous nervous system over cardiac function. Its increase is considered as a protective factor for the heart, and its measurement could be used as a tool for the early prediction or diagnosis of cardiovascular diseases. The autonomous nervous system generates inotropic and chronotropic effects on cardiac function, which can increase or decrease this variability. There are several methods for measuring heart rate variability. The most common is the Holter device, followed by the Polar system. Clinical computer programs have also been developed (Kubios®, Sinus Core®) that have shown to be valid in the measurements. Heart rate variability may be used as a predictive factor for the appearance of coronary events, including among others, cerebrovascular accidents and sudden death.

Palavras-chave : Heart rate variability; Cardiovascular diseases; Autonomous nervous system.

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