twenty seven patients , 43 to 69 years of age , all with disabling stable angina and positive bruce stress test , no amendable for revascularization procedures mainly because of poor distal coronary run-off by angiography , were studied with two calcium-channel blockers , the recently developed gallopamil hydrochloride and nifedipine hydrochloride .
C0340288
stable angina
C0028066
nifedipine