Abstract
Background Catheter related blood stream infections is a complication in patients with central venous catheter. The aim of this study was to compare vancomycin-heparin-lock and non-heparin, high-dose vancomycin-lock as treatment in patients admitted to palliative home care. With non-heparin, high-dose vancomycin-lock a high concentration of 5 mg/mL vancomycin is attained instead of only 500 ug/mL when dissolved in heparin. The non-heparin method also has the advantage of being easier and cheaper but might entail an increased risk of clotting. Methods Medical records from patients enrolled at a palliative home care unit in Stockholm between 2016 and 2018 were reviewed retrospectively. Three divisions used vancomycin-heparin-lock and the other 3 divisions used non-heparin, high-dose vancomycin-lock. Inclusion criteria were a central venous catheter related blood stream infection treated with one of the two methods for >7 days and a follow-up blood culture at the end of treatment. Results Twenty-five patients fulfilled the inclusion criteria, 12 treated with vancomycin-heparin-lock and 13 with non-heparin, high-dose vancomycin-lock. There was no significant difference in resolved infections between the two treatments, 6 of 12 for vancomycin-heparin-lock and 10 of 13 for non-heparin, high-dose vancomycin-lock (p = .23). In the non-heparin group one central venous catheter was removed due to clotting although the infection had resolved. Overall, removal of central venous catheter was similar in the two groups (6 of 12 and 4 of 13, p = .43). Conclusion The current study does not support superiority of one treatment over the other. However, larger, randomized studies are needed, before firm conclusions can be drawn.
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