QT dispersion in nonsustained ventricular tachycardia and coronary artery disease

This study examines the relation between QT dispersion and the inducibility of ventricular tachycardia (VT) in 35 consecutive patients with coronary artery disease who underwent electrophysiologic testing for evaluation of nonsustained VT. The mean age of the patients was 66 ± 9 years (± SD) and the...

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Published in:The American journal of cardiology 1996-02, Vol.77 (4), p.256-259
Main Authors: Bogun, Frank, Chan, K.Kwok, Harvey, Mark, Goyal, Rajiva, Castellani, Mark, Niebauer, Mark, Daoud, Emile, Man, K.Ching, Strickberger, S.Adam, Morady, Fred
Format: Article
Language:English
Subjects:
Aged
Biological and medical sciences
Cardiac arrhythmia
Cardiology. Vascular system
Cardiovascular disease
Chi-Square Distribution
Coronary Disease - complications
Coronary Disease - physiopathology
Coronary heart disease
Electric Stimulation
Electrocardiography
Electrophysiology
Female
Heart
Heart Ventricles - physiopathology
Humans
Male
Medical research
Medical sciences
Middle Aged
Regression Analysis
Tachycardia, Ventricular - etiology
Tachycardia, Ventricular - physiopathology
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creator Bogun, Frank
Chan, K.Kwok
Harvey, Mark
Goyal, Rajiva
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Man, K.Ching
Strickberger, S.Adam
Morady, Fred
description This study examines the relation between QT dispersion and the inducibility of ventricular tachycardia (VT) in 35 consecutive patients with coronary artery disease who underwent electrophysiologic testing for evaluation of nonsustained VT. The mean age of the patients was 66 ± 9 years (± SD) and the mean left ventricular ejection fraction was 0.36 ± 0.14. In 6 patients in whom sustained, monomorphic VT was inducible by programmed ventricular stimulation, QT dispersion was significantly greater than in the 29 patients in whom VT was not inducible (126 ± 35 vs 67 ± 25 ms, p < 0.001). All patients who had a QT dispersion >120 ms had inducible sustained monomorphic VT, and no patient who had a QT dispersion
doi_str_mv 10.1016/S0002-9149(97)89389-7
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The mean age of the patients was 66 ± 9 years (± SD) and the mean left ventricular ejection fraction was 0.36 ± 0.14. In 6 patients in whom sustained, monomorphic VT was inducible by programmed ventricular stimulation, QT dispersion was significantly greater than in the 29 patients in whom VT was not inducible (126 ± 35 vs 67 ± 25 ms, p &lt; 0.001). All patients who had a QT dispersion &gt;120 ms had inducible sustained monomorphic VT, and no patient who had a QT dispersion &lt;90 ms had inducible VT. The patients who had inducible VT did not differ significantly from those who did not with regard to age, gender, ejection fraction, RR interval, or mean QT. In conclusion, in patients with coronary artery disease who have nonsustained VT, inducibility of monomorphic VT is associated with an increase in QT dispersion. 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The mean age of the patients was 66 ± 9 years (± SD) and the mean left ventricular ejection fraction was 0.36 ± 0.14. In 6 patients in whom sustained, monomorphic VT was inducible by programmed ventricular stimulation, QT dispersion was significantly greater than in the 29 patients in whom VT was not inducible (126 ± 35 vs 67 ± 25 ms, p &lt; 0.001). All patients who had a QT dispersion &gt;120 ms had inducible sustained monomorphic VT, and no patient who had a QT dispersion &lt;90 ms had inducible VT. The patients who had inducible VT did not differ significantly from those who did not with regard to age, gender, ejection fraction, RR interval, or mean QT. In conclusion, in patients with coronary artery disease who have nonsustained VT, inducibility of monomorphic VT is associated with an increase in QT dispersion. 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identifier ISSN: 0002-9149
ispartof The American journal of cardiology, 1996-02, Vol.77 (4), p.256-259
issn 0002-9149
1879-1913
language eng
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source ScienceDirect Freedom Collection
subjects Aged
Biological and medical sciences
Cardiac arrhythmia
Cardiology. Vascular system
Cardiovascular disease
Chi-Square Distribution
Coronary Disease - complications
Coronary Disease - physiopathology
Coronary heart disease
Electric Stimulation
Electrocardiography
Electrophysiology
Female
Heart
Heart Ventricles - physiopathology
Humans
Male
Medical research
Medical sciences
Middle Aged
Regression Analysis
Tachycardia, Ventricular - etiology
Tachycardia, Ventricular - physiopathology
title QT dispersion in nonsustained ventricular tachycardia and coronary artery disease
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