ibopamine was employed at a dose of 100 mg t.i.d . in 97 patients ( aged 31-83 years ) belonging to nyha class ii and iii with congestive heart failure of different aetiology , but without any complex ventricular arrhythmias in basal conditions ( couplets with r'-r '' '' less than or equal to 400 msec , ventricular tachycardia , r on t phenomena ) .
C0085612
ventricular arrhythmias
C0042514
ventricula