You mentioned you had ventricularfibrillation. Could you mean "atrial" fibrillation? Ventricularfibrillation... in a regular pattern, so you have an irregular heartbeat.
You can have episodes of Atrial fibrillation or...
Atrial fibrillation in endurance ...by
Dr. Rubens D.
Atrial fibrillation in endurance athletes still poses problems for sports cardiologists
New..., disturbances in heart rhythm, particularly atrial fibrillation, which represent one of the major cardiovascular...