• N Seth, S Macqueen, and R F Howard.
• Department of Anaesthesia, Guys and St Thomas's Hospitals NHS Trust, London, UK.
• Paediatr Anaesth. 2004 Dec 1;14(12):996-1000.

BackgroundInfection arising from the use of epidural catheters for postoperative analgesia is a major source of anxiety.MethodsThe routine culture of epidural catheter tips were studied in 100 consecutive children aged 1 day to 15 years. Epidural catheters were inserted aseptically in accordance with an agreed protocol. The catheter site was inspected regularly and the tip sent for microbiological culture following removal.ResultsLocal signs of inflammation at the epidural site were seen in 16% of children, and bacteria were isolated from catheter tip culture in 32%. Positive catheter tip culture was found in 43% of children with local signs of inflammation and of the remaining children with no local signs, organisms were isolated from the catheter tip in 30%. Culture of skin swabs and catheter tips in two patients with purulent discharge at the epidural site yielded the same organism. No correlation between the number of attempts at catheter insertion and either local signs of inflammation or positive catheter tip cultures were found.ConclusionsMinor local signs of inflammation and infection are common in pediatric patients during continuous epidural infusion. Epidural catheter tips are also frequently culture positive in patients with and without local signs and who may not go on to develop further signs or symptoms of infection. Routine culture of catheter tips is unnecessary as it is not a good predictor of epidural space infection.

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