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The objective is to evaluate bacteremia outcomes and survival rates when using guidewire exchange to place tunnelled hemodialysis catheter (THDC) compared with a new-site replacement. Retrospectively, all patients were identified who received a THDC between January 1, 2000 and January 1, 2007. Any THDC having received antibiotic line locks or tunnel-to-tunnel exchange were excluded. This left 408 THDC placed in 329 patients: 46 guidewire exchange, 362 new-site replacement. Bacteremia rate from the new-site insertion group was 3.0 per 1000 catheter days, the guidewire exchange group demonstrated a rate of 2.8 per 1000 catheter days. Local infection rates did not differ between the groups at 1.2 per 1000 catheters days. The actuarial catheter survival rates using Kaplan-Meier survival analysis demonstrated no difference between the 2 groups. The placing of tunnelled cuffed hemodialysis catheters to replace temporary catheters using a guidewire exchange did not contribute to further episodes of sepsis and has the advantage of preserving venous access and minimizing invasive procedures for the patient.