because most ventricular tachycardias associated with ischemic heart disease appear to arise near the endocardium , this study evaluated the ability of bipolar catheter endocardial pacing at or near the endocardial site of origin of spontaneous ventricular tachycardia to mimic the qrs configuration of the spontaneous tachycardia .
C0042514
ventricular tachycardia
C0039231
tachycardia