Boston - American Association for Thoracic Surgery

AMERICAN ASSOCIATION FOR THORACIC SURGERYRESULTS: Between September 2005 and August 2008, 156 patients undergoingisolated CABG surgery were enroled (Imaging n = 76, Control n = 76). The groupswere similar in terms of demographic and angiographic characteristics. On-pumpCABG was performed in all but 12 patients. Operative, cross clamp and cardiopulmonarybypass times were all non-significantly longer in the Imaging patients.The number of grafts constructed in the 2 groups were similar (Imaging: 3.0 ± 0.7grafts/pt; Control: 3.0 ± 0.6 grafts/pt). There were no significant differencesbetween the 2 groups in the incidence of perioperative events. Overall, the 1 yearMACE (death, MI, PCI, redo CABG) was similar in the Imaging (12.7%) and theControl (9.4%) patients (p = 0.55). Post-operative X-ray (n = 23) or CT angiography(n = 61) was performed in 43 Imaging patients at 9.6 ± 8.7 months following surgeryand 41 Control patients at 11.5 ± 8.9 months post-operatively. Graft occlusionresults are presented in the Table. The proportion of patients with ≥1 graft occlusionswas similar between the 2 groups [25.6% in the Imaging group (11/43patients) and 31.7% in the Controls (13/41 patients)] as was the incidence of theother graft patency endpoints. The incidence of saphenous vein graft occlusionwas high in both the Imaging and Control patients.SUNDAYAfternoonCONCLUSION: Routine intra-operative graft assessment is safe, but does notlead to a marked improvement in graft patency 1 year post-CABG. The incidenceof saphenous vein graft failure is high even with routine intra-operative graftsurveillance.57