Abstract
Background: The increasing incidence of end stage renal disease (ESRD) patients initiating hemodialysis (HD) through a temporary HD catheter has caused the rise in catheter related infections and associated morbidity and mortality. An antibiotic lock solution (ALS) for the prevention of catheter-related bacteraemia is a promising strategy. The present randomized control study has evaluated the efficacy and safety of vancomycin as an ALS in 54 patients who required temporary double lumen catheters for HD.
 Methods: The patients were randomized to receive either (A) an ALS (vancomycin 5 mg/ml + heparin 5000 IU/ml) – group A; or (B) unfractionated heparin (5000 IU/ml) alone as a catheter lock control – group B. The study duration was of three months and was conducted at the Department of Nephrology, PIMS, Islamabad.
 Results: The primary endpoint of the study was catheter related blood stream infection (CRBSI). The vancomycin group (A) had one episode of infection (CRBSI rate = 1.23/1000 days) compared with six episodes in the heparin-locked control group (B) (CRBSI rate = 8.55/1000 days). Mean catheter survival was significantly (p<0.05) more in group A (30.48 ± 5.7days) compared to group B (26 ± 6.5 days). No thrombotic episodes or side effects were recorded.
 Conclusion: Vancomycin appeared to be a safe and effective ALS, preventing CRBSI and increasing survival of catheter in HD patients.
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