<qa>  What is the name of the type of arrhythmia that is symptomatic or requires9. History of arrhythmia multifocal premature ventricular contractions PVCs, bigeminy, trigeminy, ventricular tachycardia, or uncontrolled atrial fibrillation which is symptomatic or requires treatment CTCAE grade 3 or asymptomatic sustained ventricular tachycardia. Atrial fibrillation, controlled on medication is not excluded 