Abstract
Some experimental and clinical reports have showed the feasibility of polydioxanone in vascular surgery. In this study, polydioxanone and poly propylene suture materials were used in free internal mammary artery (IMA) graft anastomoses, which were made in 8 dogs from the left IMA to the left anterior descending coronary artery one free graft after another. Nine polydioxanone and nine polypropylene anastomoses were studied at six months with light mi croscopy and scanning electron mi croscopy (SEM). The leading feature in light microscopy was the intimal thickening, which was seen in 7 of 9 cases in both groups. Polypropylene suture material was seen and there was foreign body reaction around it, whereas polydioxanone had disap peared and no foreign body reaction could be seen. In the SEM study the endothelial line covered the anasto motic site. The polydioxanone anas tomoses were smoother than polypro pylene anastomoses, in which the su ture material was seen bulging up from the flow surface. According to this experimental study polydiox anone is as reliable as polypropylene and has some superior features over polypropylene in small luminal vas cular anastomoses.
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