To assess the impact of single chamber right ventricular pacing on the clinical profiles, QRS morphology and QRS duration on electrocardiogram This prospective study was conducted to evaluate clinical profile, QRS morphology and QRS duration of patients are having a atrioventricular disease, undergoing single chamber pacemaker implantation between November 2017 to January 2019 at UNMICRC, Ahmedabad, Gujarat All patients were followed up biannually At each follow-up visit clinical features were assessed, and pacemaker interrogation, electrocardiography was done Results: Out of 135 patients, 98 patients completed 12 months follow -up and were included in final analysis Mean age was 65 92 ± 9 64 years with 60 2% male Most common comorbidity was hypertension (49 5%) followed by diabetes mellitus type II (24 5%), coronary artery disease (9 2%), hypothyroidism (4 1%) and cerebro vascular accident (2 0%) The Commonest indication for pacemaker was complete heart block (85 7%) followed by high degree Atrioventricular (AV) block (14 3%) 35 7% and 40 8% patients had presyncope and syncope About 16 3% and 7 1% patients had New York Heart Failure Association (NYHA 2) and (NYHA 3) grade dyspnea In the present study, baseline QRS was 155 63 ± 15 70 ms which increased to 164 79 ± 10 69 ms at 12 month follow- up (p = 0 0001) All except 4 patients had Left Bundle Branch Block (LBBB) on baseline of electrocardiogram ECG The QRS duration increases over one year followup The patients remain asymptomatic for heart failure and arrhythmias on follow-up © 2021 Journal of Medical Pharmaceutical and Allied Sciences All rights reserved
The effect of single chamber right ventricular pacing on the clinical profiles, QRS morphology and QRS duration