to test whether calcium channel blockade plays a similar role in the coronary vasomotion of patients with syndrome x ( n = 29 ) and patients with prinzmetal 's angina pectoris ( n = 12 ) , quantitative angiography was used to evaluate the effect of nifedipine ( 10 mg , sublingually ) on the lumen diameter of proximal , mid and distal thirds of normal epicardial branches .
C0002963
prinzmetal 's
C0028066
nifedipine