Interruption of T waves by intrinsic QRS complexes.
D000368:Aged; D001145:Arrhythmias, Cardiac; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis / Q000209:etiology; D014693:Ventricular Fibrillation / Q000175:diagnosis / Q000209:etiology