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  • Title: Endovascular treatment of delayed rupture following prior abdominal aortic aneurysm repair achieves better survival rates.
    Author: Prusa AM, Nolz R, Wibmer AG, Schoder M, Lammer J, Polterauer P, Kretschmer G, Teufelsbauer H.
    Journal: J Endovasc Ther; 2013 Oct; 20(5):609-18. PubMed ID: 24093312.
    Abstract:
    PURPOSE: To test the hypothesis that endovascular treatment of delayed aneurysm rupture achieves significantly better survival rates compared to surgical conversion. METHODS: All patients sustaining delayed rupture following prior exclusion of an abdominal aortic aneurysm (AAA) either by endovascular aneurysm repair (EVAR) or open graft replacement from March 1995 through December 2011 were retrieved from a prospectively maintained database at a tertiary care university hospital. During the study period, 35 patients (32 men; mean age 72.9 years) presented with delayed rupture at a median 2.4 years (interquartile range 1.3-4.3) after initial AAA repair by EVAR (n=22) or open surgery (n=13). Causes of post-EVAR rupture were graft-related endoleaks, while ruptures after open repair occurred at anastomotic suture sites. Patients were divided into groups regarding type of treatment for delayed rupture: 20/35 (57%) underwent successful EVAR (10 redo procedures), 13/35 (37%) had surgery (3 redo procedures), and 2/35 (6%) patients received comfort care only. The primary endpoint was 30-day mortality. RESULTS: The 30-day mortality after curative treatment was 25% (5/20) for endovascular treatment compared to 54% (7/13) for surgery (p=0.14). Including additional deaths beyond 30 days, the overall in-hospital mortality was 52% (17/33). The Kaplan-Meier survival estimate for patients undergoing endovascular treatment was significantly higher (p=0.011). CONCLUSION: Endovascular treatment of delayed rupture is feasible and helps to reduce mortality. Our data suggest that endovascular procedures are a superior treatment option for EVAR-suitable patients with delayed rupture compared with surgical conversion.
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