Delayed paraplegia associated with vertebral necrosis after type A dissection surgery

Area of Science:

• Cardiovascular Surgery
• Neurology
• Vascular Surgery

Background:

• Acute type A aortic dissection requires complex surgical repair.
• Paraplegia is a rare but devastating postoperative complication.
• The exact pathogenesis of delayed paraplegia remains unclear.

Observation:

• A patient developed delayed paraplegia post-aortic dissection surgery.
• Imaging revealed necrosis of thoracic vertebral bodies and surrounding soft tissues.
• The patient experienced respiratory distress syndrome with hemodynamic instability prior to paralysis.

Findings:

• This case report suggests ischemia of descending thoracic intercostal arteries as a potential cause of delayed paraplegia.
• Compromised spinal circulation, exacerbated by hemodynamic instability, may precipitate clinical manifestation.
• Necrosis of spinal cord vasculature and supporting structures is implicated.

Implications:

• Understanding the mechanism of spinal cord ischemia is crucial for preventing paraplegia after aortic surgery.
• Early recognition and supportive care, potentially including cerebrospinal fluid drainage, may be beneficial.
• Further research into spinal cord protection strategies during aortic dissection repair is warranted.