The relationship between left ventricular shape and QT interval dispersion.
Left ventricular geometry is suspected to affect heterogeneity of myocardial repolarization; therefore, it is plausible but unproven that increased sphericity of the left ventricle is associated with greater QT interval dispersion. In 60 patients with dilated cardiomyopathy with left ventricular ejection fraction < or = 30%, we found that spherical distortion of the left ventricle was associated with increased QT dispersion, implying increased heterogeneity of myocardial repolarization.
Harjai
Kishore J
KJ
Ochsner Clinic, New Orleans, Louisiana, USA. kharjai@beaumont.edu
Samal
Aditya
A
Shah
Mehul
M
Edupuganti
Ravindra
R
Nunez
Eduardo
E
Pandian
Natesa G
NG
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D002311:Cardiomyopathy, Dilated / Q000150:complications / Q000503:physiopathology; D015331:Cohort Studies; D003324:Coronary Artery Disease / Q000150:complications / Q000503:physiopathology; D003971:Diastole / Q000502:physiology; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016032:Randomized Controlled Trials as Topic; D013223:Statistics as Topic; D013599:Systole / Q000502:physiology; D018487:Ventricular Dysfunction, Left / Q000473:pathology*