نتایج جستجو برای: polytetrafluoroethylene graft
تعداد نتایج: 86505 فیلتر نتایج به سال:
BACKGROUND The main pathology of haemodialysis graft stenosis is venous neointimal hyperplasia at graft-venous anastomoses. Neointimal hyperplasia is also observed in cases of coronary artery in-stent restenosis. Paclitaxel is a chemotherapeutic agent used to treat cancer, and has been proven to inhibit neointimal hyperplasia of coronary artery in-stent restenosis. In this study, we examined wh...
BACKGROUND Neointimal hyperplasia causes a high rate of hemodialysis synthetic graft failure. Thus, therapies that inhibit neointimal hyperplasia are urgently needed. The Coll-R is a sirolimus-eluting collagen matrix designed for intra-operative perivascular implantation around the graft-venous anastomosis. Sirolimus is an anti-proliferative drug that has proven clinical utility in suppressing ...
BACKGROUND Long-term patency of conventional synthetic grafts is unsatisfactory below a 6-mm internal diameter. Poly(epsilon-caprolactone) (PCL) is a promising biodegradable polymer with a longer degradation time. We aimed to evaluate in vivo healing and degradation characteristics of small-diameter vascular grafts made of PCL nanofibers compared with expanded polytetrafluoroethylene (ePTFE) gr...
Re-endothelialization of punctured ePTFE graft: an in vitro study under pulsed perfusion conditions.
BACKGROUND When used as arteriovenous (AV) shunts for haemodialysis, small diameter expanded polytetrafluoroethylene (ePTFE) grafts have a high failure rate in vivo. Attempts to improve graft patency are various, and focus on either improvement of implantation techniques or graft tissue engineering. The tissue engineering approach attempts to reproduce in grafts the properties of pristine vascu...
A 19-year-old female presented with episodic abdominal pain not related to food intake. She had occasional vomiting but had no gastrointestinal bleed. Routine ultrasound examination picked up aneurysm of the superior mesenteric artery (SMA). Computed tomography angiogram showed stenosis of the origin of the SMA and multiple aneurysms involving the proximal SMA. A large collateral artery also sh...
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