Coronary Angiography
stenosis
STENOSIS
Coronary angiography was performed through the radial artery, with 1 mg intravenous midazolam, 70 U/kg intra-arterial unfractionated heparin, and 400 to 600 μg intracoronary isosorbide dinitrate administered at the start of the procedure. Quantitative coronary angiography was used to determine the diameter of stenosis. A calibrated 0.014-inch dual sensor–tipped intracoronary guidewire (ComboWire, Philips Volcano, Rancho Cordova, CA) was used for measurement of distal coronary pressure (P