Heart rate variability (HRV) is a noninvasive, practical and reproducible measure of
autonomic nervous system function. A heart rate that is variable and responsive to demands …

Hellenic J Cardiol 48: 278-289, 2007 logical and pathological conditions, such as heart
failure, diabetes, hypertension, sepsis and brain death. 2-9 The first recorded measurements …

Introduction: Heart Rate Variability (HRV) and Pulse Rate Variability (PRV), are non-invasive
techniques for monitoring changes in the cardiac cycle. Both techniques have been used for …

Background: It has been well established that hypertension is associated with autonomic
dysregulation. Studies investigating HRV have established that hypertension is …

The increase in the incidence of cardiovascular diseases worldwide raises concerns about
the urgent need to increase definite measures for the self-determination of different …

Alterations in the heart rate recovery and heart rate variability have been associated with
greater risk of mortality and early prognosis of cardiac diseases. Thus, strategies for …

Background: The role of ultrashort-term heart rate variability (HRV) and its temporal changes
in incident hypertension are unknown. We aimed to investigate the association between 10 …

Background. Previous studies in different clinical settings have established heart rate
variability (HRV) as a significant independent risk factor for higher mortality and cardiac …

BACKGROUND: In patients with renal failure on hemodialysis cardiovascular disease is a
major cause of death. It has been reported that diminished heart rate variability (HRV) …

There is a linear relationship between resting heart rate (HR) and mortality in normotensive
and untreated hypertensive individuals. However, it is not clear whether HR is a marker of …