[Acute aortic dissection induced by autonomic dysreflexia; report of a case].

Autonomic dysreflexia can occur in patients with spinal cord injury and lead to excessive hypertension. A 61-year-old man who had been treated for spinal cord injury 28 years before in an accidental fall, was admitted with an acute aortic dissection and underwent replacement of ascending aorta. He had been injured the 6th cervical neurologic level and he had not been given regular medical care. His incident of aortic dissection during defecation might related to the elevation of blood pressure due to autonomic dysreflexia.