Decreased chaos of heart rate time series in children of patients with panic disorder.

Abstract:

:This study examined the differences of heart rate variability measures between children of parents with panic disorder and children of healthy controls using linear as well as nonlinear techniques. Supine and standing heart rate variability indices were measured in all children using power spectral analysis and a measure of chaos, the largest Lyapunov exponent (LLE) of heart rate time series. No significant differences emerged between the children of panic disorder parents and children of normal controls on any of the spectral heart rate variability measures. However, children of patients with panic disorder had significantly lower LLE of heart rate time series in supine posture, suggesting a relative decrease of cardiac vagal function in this group of children. This suggests a possible heritable effect of certain measures of heart rate variability, as previous studies showed decreased heart rate variability in patients with panic disorder using spectral as well as nonlinear techniques. Recent evidence also suggests that some of these nonlinear measures are superior or of additional value to the traditional time and frequency domain measures of heart rate variability to predict serious ventricular arrhythmias and sudden death.

journal_name

Depress Anxiety

journal_title

Depression and anxiety

authors

Srinivasan K,Ashok MV,Vaz M,Yeragani VK

doi

10.1002/da.10046

subject

Has Abstract

pub_date

2002-01-01 00:00:00

pages

159-67

issue

4

eissn

1091-4269

issn

1520-6394

journal_volume

15

pub_type

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