we studied the effect of a calcium antagonist , diltiazem , on left ventricular ( lv ) diastolic performance of hypertrophied hearts in five patients ( pts ) with systemic hypertension ( hhd ) and 6 pts with hypertrophic cardiomyopathy ( hcm ) by a combined phonoechocardiographic technique .
C0012373
diltiazem
C0020538
systemic hypertension