Changes in heart rate variability during fainting

Chaos
Robert Sheldon, Kenneth Riff

Abstract

Studies of heart rate variability in people who faint may yield insights into normal physiologic mechanisms which probably are dynamic. These insights might be gained because fainting appears to be due to a breakdown of these mechanisms. Tilt table testing reliably induces fainting in patients with a history of fainting and can be used to study these mechanisms. During tilt tests ending in fainting heart rate changes markedly, with a loss of high-frequency components on power spectral analysis and a progressive slowing of overall sinus node discharge. These changes appear to be due to changes in efferent vagal nerve traffic. Several possible mechanisms of these changes in heart rate variability are discussed.

References

Jun 15, 1991·Hospital Practice·C M Buchter, M D Thames
Oct 1, 1991·Pacing and Clinical Electrophysiology : PACE·D G BendittS Milstein
Jan 1, 1991·Journal of the American College of Cardiology·A P FitzpatrickR Sutton
Dec 1, 1990·American Heart Journal·T A DentonH Karagueuzian
Feb 1, 1990·Scientific American·A L GoldbergerB J West
Jun 1, 1990·Scientific American·A UlmannD Philibert
Jul 1, 1990·Journal of the American College of Cardiology·G PongiglioneD W Benson
Dec 1, 1985·Acta Physiologica Scandinavica·P SkoogP Thorén
Aug 1, 1988·Pacing and Clinical Electrophysiology : PACE·F Abi-SamraL W Castle
Jan 1, 1989·Journal of the American College of Cardiology·W J WelchD L Eckberg
Nov 1, 1989·Journal of the American College of Cardiology·M L AppelR J Cohen
Jan 1, 1989·The American Journal of Cardiology·M B WaxmanJ Roseman
Jul 1, 1985·Stroke; a Journal of Cerebral Circulation·D D SavageP A Wolf
Oct 1, 1971·Nature·B W HyndmanB M Sayers
Jun 1, 1983·Circulation Research·J JalifeD C Michaels
Jul 28, 1983·The New England Journal of Medicine·W N KapoorG S Levey
Dec 1, 1980·Circulation·H D McIntosh
Nov 1, 1982·Journal of the Autonomic Nervous System·B G Wallin, G Sundlöf
Mar 1, 1980·Circulation·T J Bassler
May 1, 1982·Proceedings of the National Academy of Sciences of the United States of America·E W Montroll, M F Shlesinger

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Citations

Aug 1, 1997·Journal of Applied Physiology·L A LipsitzA Medina

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