title: Unusual ventricular depolarizations associated with torsade de pointes.
mesh_terms: D000368:Aged; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis* / Q000188:drug therapy