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01.12.2017 | Review Article/Brief Review | Ausgabe 12/2017

Canadian Journal of Anesthesia/Journal canadien d'anesthésie 12/2017

Spinal cord injury after thoracic endovascular aortic aneurysm repair

Zeitschrift:
Canadian Journal of Anesthesia/Journal canadien d'anesthésie > Ausgabe 12/2017
Autoren:
MD Hamdy Awad, MBBCh, PhD Mohamed Ehab Ramadan, MD, PhD Hosam F. El Sayed, MD Daniel A. Tolpin, PhD Esmerina Tili, MD Charles D. Collard

Abstract

Purpose

Thoracic endovascular aortic aneurysm repair (TEVAR) has become a mainstay of therapy for aneurysms and other disorders of the thoracic aorta. The purpose of this narrative review article is to summarize the current literature on the risk factors for and pathophysiology of spinal cord injury (SCI) following TEVAR, and to discuss various intraoperative monitoring and treatment strategies.

Source

The articles considered in this review were identified through PubMed using the following search terms: thoracic aortic aneurysm, TEVAR, paralysis+TEVAR, risk factors+TEVAR, spinal cord ischemia+TEVAR, neuromonitoring+thoracic aortic aneurysm, spinal drain, cerebrospinal fluid drainage, treatment of spinal cord ischemia.

Principal findings

Spinal cord injury continues to be a challenging complication after TEVAR. Its incidence after TEVAR is not significantly reduced when compared with open thoracoabdominal aortic aneurysm repair. Nevertheless, compared with open procedures, delayed paralysis/paresis is the predominant presentation of SCI after TEVAR. The pathophysiology of SCI is complex and not fully understood, though the evolving concept of the importance of the spinal cord’s collateral blood supply network and its imbalance after TEVAR is emerging as a leading factor in the development of SCI. Cerebrospinal fluid drainage, optimal blood pressure management, and newer surgical techniques are important components of the most up-to-date strategies for spinal cord protection.

Conclusion

Further experimental and clinical research is needed to aid in the discovery of novel neuroprotective strategies for the protection and treatment of SCI following TEVAR.

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