Epidural Haematoma Causing Paraplegia in a Patient with Ankylosing Spondylitis: A Case Report.

INTRODUCTION: We present a case of paraplegia due to cord compression from epidural hematoma following an uneventful epidural catheter insertion in a patient with ankylosing spondylitis.

CASE PRESENTATION: A 65-year-old gentleman was scheduled for a major laparotomy for abdominal wall reconstruction. He has a past medical history of mild asthma, ankylosing spondylitis, duodenal ulcer and a superior mesenteric artery thrombosis in the past which led to bowel ischemia and intestinal failure. His drug allergies included Oxycodone. The anaesthetic plan was to do an awake epidural with catheter insertion followed by a general anaesthetic. The insertion of the epidural and the catheter was uneventful with the space identified in first attempt and no bloody tap. Intra-operative analgesia was maintained by a continuous epidural infusion of low dose local anaesthetic and opioid. The total operative time was eight hours and the patient was extubated at the end of the surgery. Following extubation, the motor block was checked in recovery using the modified Bromage scale. A dense block was noted and the epidural infusion was stopped. An MR scan was performed immediately, which showed an epidural hematoma in T5 - T11 segments. An urgent decompressive laminectomy was performed to evacuate the haematoma. However, neurological recovery was minimal with persistent paraplegia.

CONCLUSIONS: The increased incidence of epidural haematoma in patients with ankylosing spondylitis is well documented . Earlier detection and decompression can help in preserving neurological function. We recommend being more cautious when the decision for epidural analgesia is made in patients with higher grades of ankylosing spondylitis. If an epidural is considered necessary, use of x-ray guidance and some form of intra-operative neurological monitoring should be considered, particularly in prolonged surgeries which last over several hours.