Evaluation of Preoperative Angiography
Coronary angiography was performed using a standard femoral or radial
artery approach with a 5Fr or 6Fr diagnostic catheter. After
administration of 200μg of intracoronary nitroglycerin, angiography was
performed to allow for the best possible visualization of the stenosis.
A visual estimation of the maximal degree of anatomic stenosis was
performed by 2 independent cardiologists. The degree of coronary artery
stenosis was categorized as intermediate (diameter stenosis ≥70% but
<90%) or severe (≥90% stenosis).