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  • Title: Complex bypasses and fistulas for difficult hemodialysis access: a prospective, single-center experience.
    Author: Chemla ES, Morsy M, Anderson L, Makanjuola D.
    Journal: Semin Dial; 2006; 19(3):246-50. PubMed ID: 16689977.
    Abstract:
    The purpose of this article is to describe several complex vascular access procedures and the outcomes achieved with them in 24 patients (mean age 60 years) undergoing hemodialysis in whom all other accesses had failed and neither peritoneal dialysis nor transplantation was possible. Patients underwent either a necklace bypass (n = 5), axillary loop (n = 1), contralateral internal jugular vein bypass (n = 6), femorofemoral crossover bypass (n = 1), superficial femoral vein transposition (n = 5), axillary artery to popliteal vein bypass (n = 5), or femoral artery to right atrium bypass (n = 1). All grafts implanted were 6 mm, internally reinforced prostheses made of expanded polytetrafluoroethylene (Gore-Tex Intering Vascular Graft). Postoperatively patients had bimonthly clinical examinations in which the thrill, bruit, skin, cannulation sites, and adequacy of dialysis were reviewed. A bimonthly ultrasound dilution assessment that included estimation of the graft inflow rate, recirculation rate, and cardiac output was also performed. There was one serious postoperative complication: rapid-onset severe steal syndrome that required immediate tie off of the fistula. During the median follow-up time of 22 months, three patients died of causes unrelated to their vascular access. Nineteen dilatations and 10 surgical revisions were done. Primary patency rates were 83%, 63.5%, and 63.5%, respectively, at 6 months, 1 year, and 2 years; secondary patency rates were 91%, 77%, and 77%. Complex vascular access procedures can provide patients some additional good-quality time on hemodialysis.
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