torsades de pointes


torsades de pointes

 [tor-sahd´ duh pwahnt] an atypical rapid tachycardia" >ventricular tachycardia with periodic waxing and waning of amplitude of the QRS complexes on the electrocardiogram. It is usually drug related and may be either self-limiting or progressing to fibrillation" >ventricular fibrillation.