Why the study?
Is the relation between the lag of heart beats and heart rate variability altered in patients with congestive heart failure compared to normal subjects?
Is the relation between the lag of heart beats and heart rate variability altered in patients with congestive heart failure compared to normal subjects?
The curvilinear relationship between lag and heart rate variability indices seen in normal subjects is lost in patients with congestive heart failure, reflecting altered autonomic control.
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Altered lag-HRV relations may signal autonomic impairment in CHF; leaves open utility of Poincaré indices for risk stratification.
Thakre et al. (2006) studied this question.
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