NGHIÊN CỨU ĐẶC ĐIỂM RỐI LOẠN NHỊP TIM Ở BỆNH NHÂN TRƯỚC VÀ SAU PHẪU THUẬT CẦU NỐI CHỦ VÀNH

Abstract

Introduction and objectives: The types of cardiac arrhythmia in the patients pre and postoperative coronary artery bypass grafting measured by Holter ECG 24 hours are marker of ventricular dysfunction and indicates a poor prognosis. Its value in patients undergoing coronary revascularization surgery has not been established. Methods: we studied 119 consecutive patients who underwent isolated coronary artery bypass grafting operations at Hanoi Heart Hospital from 6/2016 to 8/2018. Median follow-up was 6 months. Main results: The incidence of preoperative atrial arrhythmias had a high rate of 89.9%, ventricular arrhythmias had a rate of 60.5%. The incidence of postperative ventricular arrhythmias had 82.9% after 7 days, 67.2% after 3 months and 62.1% after 6 months. Severe ventricular arrhythmia (Lown ≥ 3) had the highest rate after 7 days of surgery, decreasing after 3 and 6 months. New-onset postoperative atrial fibrillation 7 days it was 13.7%, 3 months 13.8% and 6 months was 17.2%. Conclusions: Cardiac arrhythmias were common pre and postoperative coronary artery bypass graft surgery, after surgery the number and degree of ventricular arrhythmias increasesed due to the acute effects of the surgery. Supraventricular arrhythmias were less affected by surgery, new onset atrial fibrillation increasesed with time.