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Historical Perspective Open-heart surgery was commonly used in the past to treat refractory ventricular arrhythmias (VAs). The predominant population subjected to this management strategy was made up of patients with healed myocardial infarcts who experienced sustained ventricular tachycardia (VT). The…

Key Points Ventricular outflow tract tachycardias include the right or left ventricular (LV) outflow tracts, aortic cusps, pulmonary artery, and the corresponding epicardium (LV summit region). The mechanism underlying outflow tract arrhythmias is usually triggered activity, and the site of…