Antegrade cardioplegia as a cause of acute saphenous vein endothelial damage in patients undergoing on pump coronary artery bypass surgery (Doctoral thesis)

Κούκης, Ιωάννης

Background: The administration of antegrade cardioplegia through vein grafts after the completion of each distal anastomosis is a common practice in coronary artery bypass grafting (CABG). However, the cardioplegic solution may disrupt the vein endothelium and contribute to late vein graft atherosclerotic disease. This study aimed at evaluating the possible impact of the cardioplegic solution on vein graft endothelium. Methods: 52 patients (16 women and 36 men) aged 68±8.5 years that underwent on pump coronary revascularization with at least one vein graft were enrolled. Sections of grafts from the greater saphenous vein were obtained prior to and after delivery of potassium antegrade cardioplegic solution through them. These sections were then examined histologically with immunochemical stain and CD 34 index. The endothelial damage and length of vein specimens of both graft sections were evaluated. Results: The endothelial damage of vein specimens appeared to be increased significantly with exposure to antegrade cardioplegia in male and female patients (P from Wilcoxon tests <0.001, for both genders). The increase in the length of vein specimens was significant too (P from Wilcoxon test <0.001 for men and P=0.001 for women). Conclusions: Antegrade cardioplegia delivered through vein grafts causes substantial damage on vein endothelium. This may have an adverse effect on long term graft patency.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής
Subject classification: Αορτοστεφανιαία παράκαμψη
Keywords: Ορθόδρομη καρδιοπληγία,Ενδοθηλιακή βλάβη,Φλεβικό μόσχευμα,Αορτοστεφανιαία παράκαμψη,Ανοσοϊστοχημικός δείκτης 34,Antegrade cardioplegia,Endothelial damage,Vein graft,Coronary artery bypass grafting (CABG),CD34
Appears in Collections:Διδακτορικές Διατριβές

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