Ventricular fibrillation is often a fatal arrhythmia. It occurs when the ventricular rate exceeds 400. In this setting, virtually no forward cardiac output occurs. Advanced Cardiac Life Support ...

Individual case reports 4,5 have documented the onset of ventricular fibrillation or tachycardia, or both, at the moment of inscription of the pacemaker impulse. To avoid the vulnerable period of ...

VPDs with very short coupling intervals developing during an acute stage of myocardial infarction would predict the ...

This paradoxical increase in ventricular heart rates may lead to ventricular fibrillation (ventricular rates of 400 to 600 bpm) and death. Procainamide or urgent electrical cardioversion is ...