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Titolo:
Heart rate and QT variability in children with anxiety disorders: A preliminary report
Autore:
Yeragani, VK; Rao, KAR; Pohl, R; Jampala, VC; Balon, R;
Indirizzi:
Wayne State Univ, Sch Med, Dept Psychiat, Detroit, MI USA Wayne State Univ Detroit MI USA Sch Med, Dept Psychiat, Detroit, MI USA Vet Affairs Med Ctr, Dayton, OH USA Vet Affairs Med Ctr Dayton OH USAVet Affairs Med Ctr, Dayton, OH USA Indian Inst Bangalore, Dept ECE, Bangalore, Karnataka, India Indian Inst Bangalore Bangalore Karnataka India galore, Karnataka, India
Titolo Testata:
DEPRESSION AND ANXIETY
fascicolo: 2, volume: 13, anno: 2001,
pagine: 72 - 77
SICI:
1091-4269(2001)13:2<72:HRAQVI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
POWER-SPECTRAL-ANALYSIS; SUDDEN CARDIAC DEATH; RATE TIME-SERIES; PANIC DISORDER; PERIOD VARIABILITY; MULTIPLE-SCLEROSIS; REPOLARIZATION LABILITY; NONLINEAR DYNAMICS; AUTONOMIC FUNCTION; MENTAL STRESS;
Keywords:
QT variability; heart rate variability; nonlinear; Lyapunov Exponent; anxiety disorders; autonomic; cardiovascular mortality; children;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Clinical Medicine
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Yeragani, VK Flat 16,KCN Mans, Bangalore 560001, Karnataka, India Flat 16,KCN Mans Bangalore Karnataka India 560001 aka, India
Citazione:
V.K. Yeragani et al., "Heart rate and QT variability in children with anxiety disorders: A preliminary report", DEPRESS ANX, 13(2), 2001, pp. 72-77

Abstract

This study compared beat-to-beat heart rate and QT variability in childrenWith anxiety disorders (n=7) and normal controls (n=15) by using an automated algorithm to compute QT intervals. An increase in QT variability appears to be associated with a higher risk for sudden cardiac death. A decrease in heart rate variability is also linked to significant cardiovascular events. Supine detrended QT variability, QT variability corrected for mean QT interval, and QTvi (a log ratio of QT variance normalized for mean QT over heart rate variability normalized for mean heart rate) were significantly higher in children With anxiety compared to controls (P<0.05). The largest Lyapunov Exponent (LLE) of heart rate time series Was significantly lower (P<0.05) in children With anxiety compared to controls. These findings suggesta relative increase in sympathetic activity and a relative decrease in caldine vagal activity in children With anxiety disorders, and are discussed in the context of the effects of tricyclics on cardiac autonomic function in children, and the rare occurrence of sudden death during tricyclic antidepressant treatment. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 11:50:05