De novo monomorphic and polymorphic ventricular tachycardia following coronary artery bypass grafting

In conclusion, after CABG surgery, de novo monomorphic VT represents an underlying arrhythmogenic substrate and requires aggressive management, frequently with an internal cardiovertor defibrillator. Polymorphic VT is more likely related to transient perioperative abnormalities, although the possibility of an underlying electrophysiologic substrate cannot be ruled out in patients with significant ventricular dysfunction and a history of myocardial infarction; their care should be individualized and high-risk patients treated aggressively.