caa a22 4500 47575266X CHVBK 20180406123528.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/s005950070103 doi (NATIONALLICENCE)springer-10.1007/s005950070103 High-porosity expanded polytetrafluoroethylene grafts for thoracic vena cava replacement with or without an omentum wrap [Elektronische Daten] [Toshiya Nishibe, Keishu Yasuda, Hideki Ohkashiwa, Satoshi Watanabe, Yasuhiro Okuda, Tatsuzo Tanabe] We previously reported that, in a short-term thoracic inferior vena cava (IVC) replacement, a highporosity expanded polytetrafluoroethylene (ePTFE) graft (fibril length 60μm) performed well without altering the short-term patency, and that the healing of the high-porosity ePTFE graft was accelerated by an omentum wrap. The purpose of this study was to examine the long-term performance of the high-porosity ePTFE graft with or without an omentum wrap. Eighteen grafts were placed as a thoracic IVC replacement in dogs. Nine of the grafts were wrapped in an omental pedicle flap while the other 9 were not. At 1 month and 6 months, the grafts were harvested and examined for a pathological analysis. During the observation period, one dog died of a viral infection, while the other 17 dogs survived. At 1 month and 6 months, the patency rates of the 17 grafts were 100% regardless of the presence or absence of an omentum wrap. The healing of the grafts without omentum wrap was incomplete 6 months after implantation; granulation tissue was present in the center of the pseudointima. The grafts healed completely by the addition of an omentum wrap. Our data suggest that, with an omentum wrap, the high-porosity ePTFE graft is fully expected to show a good long-term function. Springer-Verlag, 2000 High-porosity polytetrafluoroethylene graft nationallicence Omentum wrap nationallicence Thoracic inferior vena cava reconstruction nationallicence Nishibe Toshiya Department of Cardiovascular Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut Yasuda Keishu Department of Cardiovascular Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut Ohkashiwa Hideki Second Department of Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut Watanabe Satoshi Department of Anatomy, Graduate School, Hokkaido University School of Medicine, Sapporo, 060, Hokkaido, Japan aut Okuda Yasuhiro Biomedical Research and Development Department, Sumitomo Electric Industries, Co., Ltd., Osaka, Japan aut Tanabe Tatsuzo Sapporo General Hospital of Nippon Telegraph and Telephone Corp., Sapporo, Japan aut Surgery Today Springer-Verlag 30/7(2000-07-01), 631-635 0941-1291 30:7<631 2000 30 595 https://doi.org/10.1007/s005950070103 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005950070103 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nishibe Toshiya Department of Cardiovascular Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut NATIONALLICENCE 700 1- Yasuda Keishu Department of Cardiovascular Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut NATIONALLICENCE 700 1- Ohkashiwa Hideki Second Department of Surgery, Hokkaido University School of Medicine, K14, N5, Kita-ku, Sapporo, 060, Hokkaido, Japan aut NATIONALLICENCE 700 1- Watanabe Satoshi Department of Anatomy, Graduate School, Hokkaido University School of Medicine, Sapporo, 060, Hokkaido, Japan aut NATIONALLICENCE 700 1- Okuda Yasuhiro Biomedical Research and Development Department, Sumitomo Electric Industries, Co., Ltd., Osaka, Japan aut NATIONALLICENCE 700 1- Tanabe Tatsuzo Sapporo General Hospital of Nippon Telegraph and Telephone Corp., Sapporo, Japan aut NATIONALLICENCE 773 0- Surgery Today Springer-Verlag 30/7(2000-07-01), 631-635 0941-1291 30:7<631 2000 30 595 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer