Fig. 1
From: Effect of single ventricular premature contractions on response to cardiac resynchronization therapy
Flowchart of patient enrollment and follow-up. After successful CRT implantation in 125 patients, 1- and 6-month follow-up visits were performed, and patients were further followed for 2 years. Out of the total patient population, n = 67 patients had the complete pacemaker interrogation data and therefore were included in the final analyses. A total of thirty-eight patients had baseline and 6-month echocardiographic data and were analyzed for echocardiographic response. 6MWT: six-minute walk test; CRT: cardiac resynchronization therapy; ECG: electrocardiogram; LVEF: left ventricular ejection fraction; NYHA: New York Heart Association; PVC: premature ventricular contractions