ECG-Electrocardiogram, ILR-Implantable Loop Recorder, PDA-Patent ductus arteriosus, VT-Ventricular tachycardia.

Table 1: Clinical features of patients who underwent LCSD

Case.3:

A 3 year 4-month-old boy, 2^nd in birth order with uneventful antenatal and immediate post-natal period. He had recurrent episodes of syncopal attacks without seizures for 3 months of age lasting for 2-3 min with spontaneous recovery (Total 7 episodes). Mother has prolonged QTc interval. Elder sibling is healthy. He was evaluated for syncope under Neurology and EEG was reported normal. He also has delayed speech milestones and recently detected hearing loss. ECG revealed prolonged QTc (670 ms) with T wave alternans (Figure.3). He was immediately started on propranolol and developed significant bradycardia. Hence, he subsequently underwent left cardiac sympathetic denervation and PPI through left posterolateral thoracotomy.