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Risk Factors of Spinal Cord Injury After Frozen Elephant Trunk Procedures for Thoracic Aortic Aneurysm Hirohumi Midorikawa 1 , Kyouhei Ueno 1 , Gaku Takinami 1 , Ken Niitsuma 1 , Nobuki Kouyama 1 , Megumu Kanno 1 1Department of Cardiovascular Surgery, Southern Tohoku General Hospital Keyword: frozen elephant trunk , thoracic aortic aneurysm , spinal cord injury , multivariate analysis pp.83-88
Published Date 2025/2/1
DOI https://doi.org/10.15106/j_kyobu78_83
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Purpose:We investigated pre- and intraoperative factors contributing to the occurrence of spinal cord injury (SCI) in our frozen elephant trunk (FET).

Methods:A total of 109 cases to January 2024 were included in this study and divided into 98 cases in the SCI (-) group and 11 cases in the SCI (+) group. Statistical methods included Student t test and χ2 test for univariate analysis and logistic regression analysis for multivariate analysis, with p<0.05 indicating statistically significant differences.

Results:Univariate analysis:Pre- and intra-operative factors that showed statistically differences between the two groups were surgical history of abdominal aortic aneurysm (AAA)[p=0.032], emergency surgery (p=0.020), implantation of below Th8 (p<0.001), which were more frequent in the SCI (+) group;distal perfusion (DP)[p=0.004] was protective in the SCI (-) group. Multivariate analysis:Standard partial regression coefficient were below Th8 (0.0273;95%confidence interval (CI) 0.103~0.494;p=0.003), postoperative AAA (0.265;0.081~0.383;p=0.003), DP (-0.183;-0.225~-0.003;p=0.044), emergency (0.169;0.005~0.254;p=0.059), odds ratios for postoperative AAA [odds rate (OR)=15.83;95%CI 2.35~106.79;p=0.003], below Th8 (6.91;1.10~43.33;p=0.003), emergency (5.36;1.03~27.87;p=0.059), DP (0.18;0.03~0.94;p=0.044).

Conclusion:The results suggested that history of AAA surgery and below Th8 implantation of FET were strongly associated as procedural factors with SCI, and that DP was effective in preventing SCI.


© Nankodo Co., Ltd., 2025

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電子版ISSN 2432-9436 印刷版ISSN 0021-5252 南江堂

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