Question about ventricular fibrillation?

He needs to be seen by a cardiologist and have some tests made to determine if he is having intermittent runs of v-fib. He sounds like he needs an Internal Cardiac Defibrillator (ICD) implanted. If he's having intermittent runs of v-fib, he's more than likely having intermittent runs of v-tach. It may have been v-tach they were witnessing if the size of the rhythm (gain) is low. Either way, both are life threatening and need immediate intervention.