value of QT interval analysis in mitral valve prolapse patients

ABSTRACT

The aim of this study was to investigate the value of QT interval in 20 patients with mitral valve prolapse [MVP] and 20 controls. Patients had significantly longer QT-corrected values than the normal control subjects. The incidence of QT prolongation in patients with MVP varied from 20% by using the mean QTc interval to 70% by using the maximum QTc interval. Electrocardiographic repolarization abnormalities in patients with MVP had no significant relation to the QTc interval prolongation. An analysis of data was done and a longer QT and shorter R-R intervals were found, therefore higher heart rates were detected in MVP patients. It was concluded that QT interval prolongation was more common in patients with MVP than in normal subjects and that there was a higher incidence of arrhythmias in patients with prolonged maximum QTc interval