Abstract
Tunnelled dialysis catheters continue to be a choice in several patients as hemodialysis access. According to Kidney Disease Outcomes Quality Initiative guidelines, its handling implies disinfection, that can be performed using chlorhexidine solutions. Theoretically, these solutions have bactericidal capacity at concentrations greater than 0.12%. We present a curious situation of failure of the antiseptic process due to contamination of the chlorhexidine solution 4% of aqueous base. In this hemodialysis clinic, three cases of infections by the bacteria Serratia marcescens were identified over 2 weeks - in two of the cases, identified in blood culture, and in the other case in the exudate from the exit site of the catheter. Considering the abnormal number of infections by this agent and the fact that these patients were on different shifts, were treated in different rooms, and handled by different nurses, the antiseptic solutions used in the different hemodialysis rooms were analyzed, as well as a closed package from the same batch. After microbiological tests were performed on the antiseptic solution, we identified the growth of Serratia marcescens. This result identified the culprit as being the contamination of the 4% chlorhexidine solution. The competent authorities were notified, and the disinfection method was changed to use a chlorhexidine alcohol-based solution.
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