to investigate the contribution of each of these mechanisms , systemic pressures and great cardiac vein flow were measured in 14 patients with single-vessel disease involving the left anterior descending ( lad ) coronary artery during the development of pacing-induced angina and after the administration of nitroglycerin while continuing pacing at the angina-provoking rate .
C0017887
nitroglycerin
C0002962
angina