Radial artery graft flowmetry is better than saphenous vein on postero-lateral wall

Radial artery as graft for coronary artery bypass surgery: Advantages and disadvantages for its usage focused on structural and biological characteristics

“…RA is associated with better survival and freedom from cardiac events [155]. According to several angiographic observational studies [14,52,86,[104][105][106][107][108]149,154,[156][157][158][159] the RA either as an aortocoronary bypass or as a composite graft reached excellent short-(96-100%), mid-(94-97%), and long-term graft patency (84-96%), having exceeded SV graft patency.…”

“…However, higher numbers of graft-harvest-site infections and longer hospital stays also accompanied SV harvesting [164]. In another study [155], RA grafts were superior to SV grafts in terms of mean flow of circumflex coronary artery grafts and graft flow reserve of right coronary grafts in diabetics and in terms of mean flow of circumflex coronary artery grafts in the elderly. On the other hand, RITA and RA demonstrate equivalent clinical and angiographic results during the first 5-8 years, when they are grafted to a non-LAD lesion [75,110,169], although RA is less associated with perioperative bleeding and sternal wound infection [75].…”

“…A study reported that right coronary territory patency was 82% vs. 94% for other territories (p = 0.022) after RA harvesting [96]. However, diabetes is not a limitation to RA-grafting [155,178], which can also be used to reduce harvest-site infections in alcohol-drinking patients [164]. Moreover, thrombotic occlusion, caused by preoperative cardiac catheterization before CABG, is not a contraindication to the use of RA after thrombectomy [31].…”

Intra-aortic balloon pumping recruits graft flow reserve by lowering coronary resistances

“…In contrast, the diameters of saphenous vein grafts remain constant [18]. Therefore, the higher compliance of arterial grafts could reflect either an autocrine adaptation to the metabolic need of the underlying microcirculatory system or a paracrine effect of arterial grafts on the nearest endothelium of the anastomosed vessel [19,20].…”

Effects of Intra‐Aortic Balloon Pump on Coronary Artery Bypass Grafts Blood Flow: Differences by Graft Type and Coronary Target

“…In contrast, the diameters of SV grafts remain constant (22). Therefore, the higher responsiveness of arterial grafts could reflect either an autocrine adaptation to the metabolic need of the underlying microcirculatory system or a paracrine effect of arterial grafts on the nearest endothelium of the anastomosed vessel (23).…”