Migration of a Thoracic Epidural Catheter into the Intercostal Space via the Intervertebral Foramen

We describe a documented migration of a thoracic epidural catheter into the thoracic cage in a 5-wk-old with DiGeorge's syndrome and an uncorrected acyanotic Tetralogy of Fallot who underwent laparotomy for malrotation, gastric fundoplication, and gastrostomy tube insertion under combined general and epidural anesthesia. A 20-gauge stimulating catheter was inserted caudally and advanced cephalad to the thoracic level while applying a low electrical current (1-10 mA) to confirm epidural placement at approximately T5-6. Despite good pain control through the third postoperative day, using an epidural infusion of bupivacaine 0.1% at 1-1.2 mL/h, radiography demonstrated catheter migration into the seventh intercostal space.