Altered heart rate variability patterns preceding ventricular tachycardia

Research output: Contribution to journalArticle

Abstract

Implantable cardioverter-defibrillators have made it possible to analyze heart rate variability patterns just preceding episodes of ventricular tachycardia. Signs of sympathetic activation and of a reduced vagal modulation were indicated by shorter cardiac cycle lengths, lower total power, and a significantly increased low-frequency to high-frequency ratio. We also observed a sharper negative slope in the power-frequency relationship. Our findings support the concept that the minutes preceding the onset of ventricular tachycardia are characterized by changes in neural control mechanisms.

Original languageEnglish
Pages (from-to)35-38
Number of pages4
JournalCardiology Review
Volume18
Issue number8
Publication statusPublished - 2001

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Ventricular Tachycardia
Heart Rate
Implantable Defibrillators

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Altered heart rate variability patterns preceding ventricular tachycardia. / Lombardi, F.

In: Cardiology Review, Vol. 18, No. 8, 2001, p. 35-38.

Research output: Contribution to journalArticle

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