Document Detail

Predicting the risk of paraplegia after thoracic and thoracoabdominal aneurysm repair.
MedLine Citation:
PMID:  20868820     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Endovascular repair of descending thoracic and thoracoabdominal aortic aneurysms is an appealing alternative to the standard surgical approach, but precludes revascularization of segmental arteries (SAs). For safer surgical and endovascular repairs, an accurate prediction of the risk of paraplegia in relation to the extent of SA sacrifice is needed. METHODS: From January 1994 to October 2008, 609 patients (mean age, 63 ± 14 years) underwent surgical descending thoracic or thoracoabdominal aortic aneurysm repair without SA reimplantation. Three hundred seventy-six patients (62%) were male; 159 (26%) had urgent or emergent operation; 199 (33%) had previous aortic surgery. Somatosensory- or motor-evoked potential monitoring and cerebrospinal fluid drainage were routinely performed. RESULTS: Hospital mortality was 10.7% (65 patients). Spinal cord injury (SCI) occurred in 3.4% (21 patients). The extent of resection-expressed as the number of SAs sacrificed (p = 0.007)-and the need for visceral artery reimplantation (p = 0.03) were independent risk factors for paraplegia. Further analysis identified four risk groups (p < 0.0001): fewer than 8 SAs sacrificed (group A, SCI = 1.2%); sacrifice of 8 to 12 SAs with proximal origin in the upper thorax (group B, SCI = 3.7%); 8 to 12 SAs sacrificed beginning in the lower thorax (group C, SCI = 15.4%); and 13 or more SAs sacrificed (group D, SCI = 12.5%). This four-group model more accurately predicts SCI risk than the Crawford classification (goodness of fit c statistic: 0.748 versus 0.640). CONCLUSIONS: The extent of SA sacrifice is the most powerful predictor of paraplegia risk. For aneurysms of moderate extent, a more distal location involving the abdominal aorta increases the risk of spinal cord injury. Sacrifice of fewer than 8 SAs is associated with a very low paraplegia risk regardless of location.
Stefano Zoli; Fabian Roder; Christian D Etz; Robert M Brenner; Carol A Bodian; Hung-Mo Lin; Gabriele Di Luozzo; Randall B Griepp
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  90     ISSN:  1552-6259     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-27     Completed Date:  2010-10-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1237-44; discussion 1245     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2010 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
Department of Cardiothoracic Surgery, Mount Sinai School of Medicine, New York, New York 10029, USA.
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MeSH Terms
Aged, 80 and over
Aortic Aneurysm, Thoracic / surgery*
Arteries / surgery
Blood Vessel Prosthesis Implantation / adverse effects*,  methods
Middle Aged
Paraplegia / etiology*
Retrospective Studies
Risk Factors
Spinal Cord Diseases / etiology*
Young Adult

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