56-37: Eight years experience in permanent pacemaker implantation after open heart surgery

Abstract

Aims: We aimed to evaluate the clinical characteristic of permanent pacemaker (PPM) implantation among patients who underwent open heart surgery. Methods: We reviewed data of 25115 patients undergoing open heart surgery between 2006 and 2014 in our heart centre in Iran. Totally, 18070 (72%) patients had coronary bypass graft surgery (CABG), 3598 (14.5%) valvular surgery and 3447 (13.5%) redo surgery or congenital repair procedures. Finally, 135 patients who received PPM following open heart surgery were enrolled. We defined the demographic and clinical characteristics of the patients. Results: One hundred and thirty-five (0.53%) patients required PPM implantation (mean age= 58 ± 15.3 years). Mean hospitalization time after surgery was 19.7 ± 10.03 days, and waiting time for PPM implantation was 11.3 ± 6.24 days. Mitral valve replacement (MVR) had the highest rate of PPM implantation. Atrioventricular block was the dominant cardiac conduction disturbance. Diabetes mellitus, hypertension, and dyslipidemia were significantly more prevalent in the CABG group (P = 0.007, P = 0.03, and P = 0.001, respectively) while atrial fibrillation was more frequent among the patients with valvular surgery (P < 0.001). Patients with AVR tended to be older than other valvular surgery categories (P = 0.051) and had a significantly longer cross clamp time than the other groups (P = 0.026). Conclusion: Damage to cardiac conduction system following open heart surgery resulted to PPM implantation in 0.53% of the patients in this study.