PMID: 9435618Jan 22, 1998Paper

Spectral characteristics of ventricular response to atrial fibrillation

The American Journal of Physiology
Junichiro HayanoT Fujinami

Abstract

To investigate the spectral characteristics of the fluctuation in ventricular response during atrial fibrillation (AF), R-R interval time series obtained from ambulatory electrocardiograms were analyzed in 45 patients with chronic AF and in 30 age-matched healthy subjects with normal sinus rhythm (SR). Although the 24-h R-R interval spectrum during SR showed a 1/f noise-like downsloping linear pattern when plotted as log power against log frequency, the spectrum during AF showed an angular shape with a breakpoint at a frequency of 0.005 +/- 0.002 Hz, by which the spectrum was separated into long-term and short-term components with different spectral characteristics. The short-term component showed a white noise-like flat spectrum with a spectral exponent (absolute value of the regression slope) of 0.05 +/- 0.08 and an intercept at 10(-2) Hz of 4.9 +/- 0.3 log(ms2/Hz). The long-term component had a 1/f noise-like spectrum with a spectral exponent of 1.26 +/- 0.40 and an intercept at 10(-4) Hz of 7.0 +/- 0.3 log(ms2/Hz), which did not differ significantly from those for the spectrum during SR in the same frequency range [spectral exponent, 1.36 +/- 0.06; intercept at 10(-4) Hz, 7.1 +/- 0.3 log(ms2/Hz)]. The R-R intervals during A...Continue Reading

References

Jan 1, 1975·Upsala Journal of Medical Sciences·H Aberg, B Furberg
Oct 15, 1990·The American Journal of Cardiology·E A Raeder
Nov 1, 1990·Journal of the American College of Cardiology·L ToivonenF Morady
Mar 1, 1988·Journal of the American College of Cardiology·F H WittkampfF L Meijler
Nov 1, 1988·Journal of the American College of Cardiology·J A KirshS Swiryn
Jul 11, 1988·The American Journal of Cardiology·G S Francis
Aug 1, 1967·Circulation Research·E N Moore
Aug 1, 1958·The American Journal of Physiology·R ALESSIG K MOE

❮ Previous
Next ❯

Citations

Nov 22, 2008·Journal of Applied Physiology·Michela MasèFlavia Ravelli
Jul 5, 2005·Journal of Applied Physiology·Richard S T LeungT Douglas Bradley
Sep 7, 2014·Medical & Biological Engineering & Computing·Stefania ScarsoglioLuca Ridolfi
Feb 11, 2016·BMC Medical Informatics and Decision Making·Teresa S HenriquesAry L Goldberger
Feb 11, 2003·Journal of Applied Physiology·Lennart Bergfeldt, Yoshiyuki Haga
Dec 9, 2020·Entropy·Chang Francis HsuSien Chi
Aug 27, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E LandaA Frank

❮ Previous
Next ❯

Related Concepts

Related Feeds

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Atrial Filbrillation

Atrial fibrillation refers to the abnormal heart rhythm characterized by rapid and irregular beating of the atria. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.