title: Blood velocity in the coronary artery circulation: relation to thromboxane A2 levels in coronary sinus in patients with angiographically normal coronary arteries.
abstract: In the present study, we report the finding that some patients with spontaneous typical angina and angiographically normal coronary arteries present an abnormal cardiocoronary capacity to produce thromboxane A2, both in basal conditions and after sympathetic stimulation. The levels of thromboxane A2 in coronary sinus are significantly correlated to the rate of clearance of contrast medium in coronary circulation. Such a finding might be useful in better understanding the interesting syndrome of angina with normal coronary arteries.
mesh_terms: D000328:Adult; D001011:Aorta; D001783:Blood Flow Velocity; D003287:Contrast Media; D017023:Coronary Angiography; D003326:Coronary Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013928:Thromboxane A2 / Q000097:blood*; D013929:Thromboxane B2 / Q000097:blood
chemical_list: D003287:Contrast Media; D013929:Thromboxane B2; D013928:Thromboxane A2