[Case of thoracoabdominal stent graft with postoperative paralysis which showed dramatic recovery after re-institution of spinal drainage].

: A 62-year-old man underwent stent graft insertion for thoracoabdominal aneurysm. We inserted a spinal drainage catheter at L3-4 and started drainage at 10 cmH2O at the beginning of surgery. Intravenous naloxone was started from the beginning of the operation. Intraoperative course was uneventful, and postoperatively no neurological symptoms/signs were noted. The next day, 90 minutes after removal of the drainage catheter, sensory loss and muscle weakness of bilateral lower limbs developed. A drainage catheter was reinserted, and muscle weakness of the right lower limb recovered after 115 minutes, and sensory loss of left lower limb recovered after 260 minutes. There was no muscle weakness or paralysis after 300 minutes. The drainage was continued for the next 48 hours and removed without subsequent neurological symptoms and the patient was discharged eight days after the operation.