RỐI LOẠN NHỊP THẤT Ở BỆNH NHÂN ST CẤY ICD DỰ PHÒNG NGUYÊN PHÁT

Abstract

Background: Ventricular arrhythmias are a major cause of sudden death in patients with heart failure and reduced ejection fraction. Implantable cardioverter-defibrillators are effective for primary prevention, but data in Vietnam are limited. Objective: To assess the incidence of ventricular arrhythmias recorded by implantable cardioverter-defibrillators in heart failure patients and analyze related factors. Method: A cross-sectional and longitudinal study was conducted on 59 patients with ejection fraction ≤ 35% who received implantable cardioverter-defibrillators from September 2020 to May 2021. Logistic regression was used for analysis. Result: During 7.8 months of follow-up, 35.6% developed ventricular arrhythmias (11.9% premature ventricular contractions, 5.1% nonsustained ventricular tachycardia, 11.9% sustained ventricular tachycardia). New York Heart Association class III was an independent risk factor (odds ratio 43.33; p = 0.006), while male sex (odds ratio 0.10; p = 0.006), beta-blocker use (odds ratio 0.08; p = 0.019), and cardiac resynchronization therapy with defibrillator (odds ratio 0.13; p = 0.025) were protective. Conclusion: Ventricular arrhythmias are common after implantable cardioverter-defibrillator implantation in heart failure patients. Symptom severity, sex, medication, and device type influence risk.