heart rate variability


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Related to heart rate variability: heart rate range

heart rate variability

Abbreviation: HRV
Spontaneous fluctuations above and below the mean heart rate. A reduced HRV is associated with an increased incidence of total mortality and cardiac events in post-myocardial infarction patients, as well as in apparently healthy individuals, esp. older persons.
See also: variability
References in periodicals archive ?
2012) Heart rate variability and pre-competitive anxiety in BMX discipline.
Depressed mood is related to high-frequency heart rate variability during stressors.
Caption: Figure 1--Untransformed values of heart rate variability parameters among ARVC affected (>1,000 VPCs/24 hour; n=14) and unaffected (< 20 VPCs/24-hour; n=28) Boxer dogs.
The basal rhythm, the highest and lowest heart rates, mean heart rate, supraventricular premature beat, ventricular premature beat (VPB), supraventricular tachycardia, ventricular tachycardia, pause interval and heart rate variability measurements were examined.
A combination measure of high heart rate variability ("a pretty pure measure of vagal activity, not sympathetic activity") and low heart rate ("more driven by the sympathetic adrenal-medullary system") is an even stronger predictor of overall survival, he said.
Markers of inflammation in acute coronary syndromes: Association with increased heart rate and reductions in heart rate variability.
As a result, there is an abnormal increase in the firing rate at sympathetic nerve endings thus leading to electrical instability by decreasing heart rate variability consequently generating potentially lethal ventricular tachyarrhythmias.
Obesity and insulin resistance are disorders of body energy balance and several previous studies find both are associated with autonomic dysfunction measured as various parameters of heart rate variability [3-6].
Aubert AE, Seps B, Beckers F (2003) Heart rate variability in athletes.