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Epidural catheters are seldom challenging to remove from patients. The occurrence of knotting in an epidural catheter, resulting in entrapment, is an uncommon complication of epidural catheterization. There is the risk of significant morbidity with a retained catheter, with the potential for infection or nerve injury. This report describes the techniques used in a case where surgical removal of an entrapped epidural was required and discusses other potential strategies for the successful management of this type of complication. In this case, a low thoracic epidural catheter that was inserted into a 68-year-old male for post-operative analgesia proved challenging to remove. After multiple attempts to remove the catheter, a lumbar CT scan and neurosurgical evaluation were obtained. The neurosurgical team decided to perform a right thoracic hemilaminectomy to remove the entrapped catheter. This surgery revealed a knot near the distal tip of the catheter, which likely caused the entrapment of the catheter in the epidural space.
Hruska et al. (Mon,) studied this question.