The patients were randomised into 2 groups; Group I had patients in whom multiperfusion set was used for cardioplegia and continuous warm blood perfusion through vein grafts during proximal ends anastomosis, and Group II had patients in whom routine aortic root antegrade cardioplegia was used with no warm blood perfusion during proximal anastomosis of vein grafts.
Tight stenosis in the native coronary arteries limits the delivery of antegrade cardioplegia solution distal to critical lesions and hampered myocardial preservation.
To overcome the limitation of aortic root antegrade cardioplegia in patients with severe coronary artery disease (CAD), we used simultaneous aortic root and vein graft cold blood cardioplegia, calling it 'multiport antegrade cold blood cardioplegia', which is a safe and simple technique without complications.
Group I, which was the Study group, had patients who received multiport antegrade cardioplegia and continuous controlled warm blood perfusion through vein grafts, and Group II, the Control group, had patients who underwent routine conventional CABG with antegrade aortic root cardioplegia without warm blood perfusion.
In this way, simultaneous intermittent antegrade graft cardioplegia was administered in addition to aortic root cardioplegia -- named multiport antegrade cardioplegia.
6 In thepresent case, the intimal tear was identified in the anterior of the ascending aorta, which was compatible with the site of the suture line of the SVG or the site of antegrade cardioplegia
infusion but intraoperative findings were not conclusive to clarify the etiology of the dissection.