Source:http://linkedlifedata.com/resource/umls/id/C0040479
MSH: A malignant form of polymorphic ventricular tachycardia that is characterized by HEART RATE between 200 and 250 beats per minute, and QRS complexes with changing amplitude and twisting of the points. The term also describes the syndrome of tachycardia with prolonged ventricular repolarization, long QT intervals exceeding 500 milliseconds or BRADYCARDIA. Torsades de pointes may be self-limited or may progress to VENTRICULAR FIBRILLATION.,NCI: 'Fringe of pointed tips'; An atypical rapid ventricular tachycardia with periodic waxing and waning of amplitude of the QRS complexes on the electrogram as well as rotation of the complexes about the isoelectric line.,NCI: An atypical rapid polymorphic ventricular tachycardia with a characteristic rotation of the QRS complex around the isoelectric baseline. In addition the QRS complex displays a periodic waxing and waning of amplitude on the electrogram. (NCI),NCI: Fringe of pointed tips; An atypical rapid ventricular tachycardia with periodic waxing and waning of am