Related Experiment Video
Updated: May 2, 2026

A Model of Long-Term Ventricular Fibrillation in Isolated Rat Hearts
Published on: February 17, 2023
Vasovagal syncope initiating ventricular fibrillation in a healthy subject
Caroline Lepiece1, Fabien Dormal2, Dominique Blommaert2
1Dept. of Cardiology, Rhythm Unit, CHU UCL Mont-Godinne, Yvoir, Belgium. caroline.lepiece@hotmail.be
Abstract:
A 62-year-old man with cured lymphoma as only significant medical history experienced a first reflex syncope after prolonged orthostatic posture, with cardiac arrest. Prolonged asystole was followed by ventricular fibrillation needing external defibrillation. The defibrillator provided complete recordings. Thorough investigation revealed no cardiac abnormalities apart from a few right ventricular outflow tract premature complexes. This patient benefitted from implantation of an ICD for ventricular fibrillation secondary to reflex syncope, usually considered benign.
Related Concept Videos
Dysrhythmias III: Characteristics of Dysrhythmias
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Dysrhythmias II: Classification of Tachyarrhythmias
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Dysrhythmias I: Introduction

