Diseases, Conditions, Syndromes

Unexpected ventricular tachycardia following acoustic provocation during electroencephalography

A 4-year-old girl underwent electroencephalography (EEG) in an outside hospital due to several episodes of recurrent syncope suspected to be due to generalised seizures. Previous EEG studies, cranial MRI, echocardiography and ECG revealed normal results. Notably, episodes were reported to follow emotional stress or frightening events. Following noise provocation during EEG, the child developed bidirectional/polymorphic ventricular tachycardia (VT), which degenerated to ventricular fibrillation (VF), accompanied by hypoxic changes in the EEG (figure 1). After defibrillation and …

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