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Updated: Feb 1, 2026

A Model of Long-Term Ventricular Fibrillation in Isolated Rat Hearts
Published on: February 17, 2023
Recurrence of ventricular fibrillation in a patient with non-type 1 Brugada electrocardiographic morphology
Minoru Tagawa1, Masaomi Chinushi2, Yuichi Nakamura1
1Department of Cardiology, Nagaoka Chuo General Hospital, Niigata, Japan.
Abstract:
A healthy 25-year-old man suffered from loss of consciousness due to ventricular fibrillation (VF). Emergency services required multiple cardioversion to restore sinus rhythm. Repeated electrocardiographic (ECG) recordings after admission showed non-type 1 Brugada ST-segment elevation in V1 and V2. Intravenous pilsicainide infusion augmented the ST-segment elevation but its morphology did not represent type-1 ECG. Intravenous administration of isoproterenol normalized the ST-segment elevation, and programmed electrical stimulation induced VF. Spontaneous VF recurred 1 year after introduction of implantable cardioverter defibrillator. Non-type 1 ST-segment elevation, to which pharmacological responses are similar to Brugada syndrome, may be used as a hallmark of ventricular tachyarrhythmia.
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