What does HRV mean in Physiology?

This page is about the meanings of the acronym/abbreviation/shorthand HRV in the Medical field in general and in the Physiology terminology in particular.

Heart Rate Variability

Medical » Physiology

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Definition

What does HRV mean?

Heart rate variability
Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat interval. Other terms used include: "cycle length variability", "RR variability" (where R is a point corresponding to the peak of the QRS complex of the ECG wave; and RR is the interval between successive Rs), and "heart period variability". Methods used to detect beats include: ECG, blood pressure, ballistocardiograms, and the pulse wave signal derived from a photoplethysmograph (PPG). ECG is considered superior because it provides a clear waveform, which makes it easier to exclude heartbeats not originating in the sinoatrial node. The term "NN" is used in place of RR to emphasize the fact that the processed beats are "normal" beats.

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"HRV." Abbreviations.com. STANDS4 LLC, 2019. Web. 15 Oct. 2019. <https://www.abbreviations.com/term/116223>.

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