QT dispersion in nonsustained ventricular tachycardia and coronary artery disease

• 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
• ISSN: 0002-9149; 1879-1913
• DOI: 10.1016/S0002-9149(97)89389-7

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