Prevalence of Extracardiac Coronary Collateral Supply Via the Internal Mammary Arteries

"* Diagnostic coronary angiography and LV angiography~* Administration of 5'000 units of heparin i.v. and 2 puffs of oral isosorbide-dinitrate~* Right and left IMA CFI during a 1-minute ostial vessel occlusion~* Selection of the coronary artery for CFI according to stenotic lesion chosen for PCI or according to ease of access by the pressure sensor wire. Placement of a non-sensor wire in the left IMA. Two coronary CFI measurements (1-minute occlusion): the first with, the second without distal IMA balloon occlusion. Placement of a non-sensor wire in the right IMA. Two coronary CFI measurements: the first with, the second without distal IMA balloon occlusion.~* IMA angiography (left and right) during distal IMA and coronary occlusion."

"* Diagnostic coronary angiography and LV angiography~* Administration of 5'000 units of heparin i.v. and 2 puffs of oral isosorbide-dinitrate~* Right and left IMA CFI during a 1-minute ostial vessel occlusion~* Selection of the coronary artery for CFI according to stenotic lesion chosen for PCI or according to ease of access by the pressure sensor wire. Placement of a non-sensor wire in the left IMA. Two coronary CFI measurements (1-minute occlusion): the first with, the second without distal IMA balloon occlusion. Placement of a non-sensor wire in the right IMA. Two coronary CFI measurements: the first with, the second without distal IMA balloon occlusion.~* IMA angiography (left and right) during distal IMA and coronary occlusion."