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  • Title: Externalization of tunneled hemodialysis catheter in patients with tunnel or exit-site infections and limited access options.
    Author: Jaberi A, Hadziomerovic A, Toor SS, Galwa RP, Graham J, Thornhill RE, Ryan SE.
    Journal: J Vasc Interv Radiol; 2014 Apr; 25(4):561-6. PubMed ID: 24674214.
    Abstract:
    PURPOSE: To evaluate the viability and effectiveness of temporary externalization of a tunneled hemodialysis (HD) catheter in catheter-dependent HD patients presenting with catheter-related tunnel or exit-site infection, documented central venous stenosis, and limited alternative venous access. MATERIALS AND METHODS: All catheter-dependent HD patients with known central venous stenosis presenting with exit-site or tunnel infection and who subsequently underwent catheter externalization between February 2008 and May 2012 were reviewed. After catheter externalization, patients were concurrently treated with antibiotics for approximately 3 weeks before reinsertion of a new tunneled catheter. Treatment outcomes were collected, with treatment failures defined as reinfection with the same organism within 45 days of tunneled catheter reinsertion. RESULTS: There were 42 catheter externalization procedures performed in 26 patients for 42 exit-site or tunnel infections. Technical success rate for catheter externalization was 100%, with no complications during the externalization procedure and preservation of all original access sites. Treatment failure occurred in 9.8% (4 of 41) of cases. Median infection-free survival after treatment and retunneling of a new dialysis catheter was 80 days. One major periprocedural complication of death occurred before reinsertion of a new tunneled catheter. Minor complications after the procedure occurred in four patients and included three cases of a small persistent wound at the temporary supraclavicular access site and one initially nonfunctioning externalized catheter. CONCLUSIONS: Temporary dialysis catheter externalization appears both technically feasible and effective for the treatment of exit-site and tunnel infections, while allowing preservation of the venous access site in catheter-dependent HD patients with central venous stenosis and limited alternative venous access.
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