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  • Title: Early patency rate and fate of reattached intercostal arteries after repair of thoracoabdominal aortic aneurysms.
    Author: Omura A, Yamanaka K, Miyahara S, Sakamoto T, Inoue T, Okada K, Okita Y.
    Journal: J Thorac Cardiovasc Surg; 2014 Jun; 147(6):1861-7. PubMed ID: 24035377.
    Abstract:
    OBJECTIVES: The present study analyzes the early patency of intercostal artery reconstruction, using graft interposition and aortic patch anastomosis, and determines the fate of reattached intercostal arteries after repair of thoracoabdominal aortic aneurysms. METHODS: We selected 115 patients (mean age, 63 ± 15 years; range, 19-83 years; male, n = 83) treated by thoracoabdominal aortic aneurysm repair with 1 or more reconstructed intercostal arteries at the Kobe University Graduate School of Medicine between October 1999 and December 2012. The intercostal arteries were reconstructed using graft interposition (n = 66), aortic patch anastomosis (n = 42), or both (n = 7). RESULTS: The hospital mortality rate was 7.8% (n = 9). Eleven patients (9.6%) developed spinal cord ischemic injury (permanent, n = 6, transient, n = 5). The average number of reconstructed intercostal arteries per patient was 3.0 ± 1.5 (1-7), and 345 intercostal arteries were reattached. The overall patency rate was 74.2% (256/345) and that of aortic patch anastomosis was significantly better than that of graft interposition (90.8% [109/120] vs 65.3% [147/225], P < .01), but significantly worse for patients with than without spinal cord ischemic injury (51.9% [14/27] vs 76.1% [242/318], P = .01). There was no patch aneurysm in graft interposition during a mean of 49 ± 38 (range, 2-147) postoperative months, but aortic patch anastomosis including 4 intercostal arteries became dilated in 2 patients. CONCLUSIONS: Aortic patch anastomosis might offer better patency rates and prevent spinal cord ischemic injury compared with graft interposition. Although aneurysmal changes in intercostal artery reconstructions are rare, large blocks of aortic wall reconstruction should be closely monitored.
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