Evaluation of Changes in Ventricular Repolarization Parameters After Surgical Mitral Valve Repair in Patients with Mitral Valve Prolapse

Objective: To evaluate the changes in ventricular repolarization parameters in preoperative and postoperative electrocardiograms (ECGs) of patients who underwent mitral valve repair (MVR) for mitral valve prolapse.Methods: Patients who underwent MVR due to mitral valve prolapse with severe mitral regurgitation were included in the study.A resting 12-lead ECG was recorded both preoperatively and 6 months postoperatively.QT, QTc, cQTd, JT, JTc, and Tp-e were measured; Tp-e/QT and Tp-e/QTc ratios were calculated. Results:The study included 53 patients (58.5% male), with a mean age of 52.713 years.The durations of PR, QRS, QT, cQT, cQTd, JT, cJT, and Tp-e were reduced significantly (P<0.001) six months after repair. Conclusions:The repolarization parameters changed after MVR surgery.Shortening of the QT, cQT, cQTd, JT, cJT, and Tp-e durations after the repair procedure may reduce the risk of sudden cardiac death, and arrhythmias in MVP.