Cigarette Smoking and the Risk of Supraventricular and Ventricular Tachyarrhythmias in High‐Risk Cardiac Patients with Implantable Cardioverter Defibrillators

In patients with ischemic left ventricular dysfunction, continued cigarette smoking is associated with a significant increase in the risk of life-threatening ventricular tachyarrhythmias and inappropriate ICD shocks induced by rapid supraventricular arrhythmias. Our findings stress the importance of complete smoking cessation in this high-risk population.