Incessant fascicular VT presenting as cardiogenic shock with multi-organ dysfunction syndrome.

We report a rare clinical presentation of incessant idiopathic fascicular ventricular tachycardia (FVT), presenting as multi-organ dysfunction (MOD) syndrome with cardiogenic shock. Our patient was a 19-year-old male who presented with slowly progressive dyspnea from New York Heart Association (NYHA) II to NYHA IV at the time of presentation, palpitations, and dilated cardiomyopathy due to drug-refractory FVT. The patient was in cardiogenic shock with raised central venous pressures and required inotropic support for maintaining systolic blood pressure above 90 mmHg. The MOD was seen in the form of deranged liver and kidney parameters. Echocardiography showed a dilated left ventricle (LV, 58 mm at end-diastole, 52 mm at end-systole) and decreased ejection fraction (20%). Electrocardiography showed a wide-QRS tachycardia (QRS 140 ms, cycle length 440 ms), with RsR' in lead V1 and a QRS axis of -60°. After stabilization with ventilation, inotropic support, and cautious use of diuretics, an electrophysiologic study was performed. A Purkinje potential with early local ventricular activation was recorded from the LV inferoseptal region. The tachycardia was ablated at this site with radiofrequency (RF) energy (40 W for 35 sec). Over a 3-month follow-up, the patient remained asymptomatic and the LV size and function returned to normal. <Learning objective: To highlight a rare and unreported complication of fascicular ventricular tachycardia presenting as multi-organ dysfunction and its reversion with radiofrequency ablation.>.