to investigate the mechanism by which nifedipine improves exercise tolerance in patients with coronary artery disease , we studied 14 patients with stable exertional angina and left anterior descending artery disease by measuring great cardiac vein flow ( gcvf ) and calculating anterior regional coronary resistance ( arcr ) during exercise before and after sublingual administration of 20 mg of nifedipine .
C0028066
nifedipine
C0340288
stable