we studied the acute effects of intravenous nifedipine on hemodynamics and left ventricular function of cad patients without previous treatment ( group 1 ) and of 10 cad patients receiving acebutolol ( 9 mg/kg daily ) and who had been shown to be adequately beta blocked ( reduction in heart rate by 25 % ) ( group 2 ) .
C0000946
acebutolol
C0428977
reduction