Incidence of infection related to arterial catheterization in children

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Abstract
The incidence of infection related to arterial catheterization has not been studied in critically ill children, using systematic catheter cultures. We studied prospectively 68 children in whom 70 arterial catheters were inserted. After the aseptic catheterization procedure, no component of the system was changed. The insertion site was inspected daily for signs of inflammation. Upon removal, catheters were cultured using a semiquantitative method. Blood and infusion fluid specimens were also cultured if septicemia was clinically suspected. Mean duration of catheterization was 59 +/- 6 (SE) h. In our series, all catheter and infusion fluid cultures were negative. Local inflammation was not predictive of catheter tip infection and correlated poorly with duration of catheterization (r = 0.2). In our experience, the incidence of infection related to arterial catheterization is low. Routine change of infusion fluid, tubing, dressing and insertion site as well as systematic catheter culture in the absence of fever appears unwarranted.

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