A 15-year-old girl of Asian origin, hailing from a rural agrarian background, presented with history of multiple episodes of dizziness for 3 years. The episodes were precipitated mostly by emotional and/or physical stress and relieved on lying down, with a few episodes culminating in transient loss of consciousness. As preliminary cardiac and neurological evaluation were normal, she was being treated by the primary physician as a case of probable psychogenic syncope, supported by the consistent association of the episodes with emotional stress. A detailed review of family history revealed that the premature demise of the patient's siblings which were attributed to snakebite and head trauma by the family could have been in reality sudden cardiac deaths. Treadmill test revealed exercise-induced polymorphic ventricular tachycardia confirmatory for the diagnosis of catecholaminergic polymorphic ventricular tachycardia. She was initiated on beta-blocker therapy to which she showed remarkable response.
Keywords: arrhythmias; congenital disorders; genetic screening / counselling; pacing and electrophysiology.
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