Surgical treatment of congenital left ventricular outflow track obstruction;

Curative radiofrequency catheter ablation of frequent monomorphic ventricular ectopic beats originating from right outflow tract;

Observation on radiofrequency catheter ablation used in patients with ventricular ectopic beats originating from right ventricular outflow tract

Objective:To determine the circadian variation and its clinical implications of ventricular arrhythmais in the patients with idiopathic ventricular tachycardia originating from right ventricular outflow tract (IRVOT-VT).

Purpose: To study the MRI feature of right ventricular outflow tract in patients with symptomatic right ventricular outflow tract ectopic activity.

Objective: The aim of our study was to compare cardiac output (CO) during short-term atrioventricular sequential pacing from the right ventricular apex and from the outflow tract of the right ventricle, to assess if short-term right ventricular outflow tract pacing were much better than right ventricular apical pacing.

Background:As proved by more and more clinical and experimental researches, right ventricular pacing for long time inducing LBBB may cause hemodynamic disorder and systolic dys-synchrony of LV,which drives people to find new alternative pacing site-right ventricular outflow tract pacing.