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  • Title: Endovascular repair of proximal para-anastomotic aneurysms after previous open abdominal aortic aneurysm reconstruction.
    Author: Wu Z, Xu L, Raithel D, Qu L.
    Journal: Vascular; 2016 Jun; 24(3):227-32. PubMed ID: 26113573.
    Abstract:
    OBJECTIVE: To evaluate the safety, efficacy and durability of endovascular repair for proximal para-anastomotic aneurysms after previous open abdominal aortic aneurysms prosthetic reconstruction and share our experience. METHODS: We retrospectively reviewed the data of all patients with previous open abdominal aortic aneurysms prosthetic reconstruction who underwent endovascular repair for proximal para-anastomotic aneurysms between May 2003 and January 2013 in our center (Nuremberg South Hospital). Key clinical outcomes included technical success rate, peri-operative morbidity and mortality, mid-term complications, reinterventions and open conversion rates. RESULTS: Totally, 24 patients of proximal para-anastomotic aneurysm were treated by endovascular repair. Successful deployments of stent graft were achieved in all patients (100%). Median hospital stay was 6.7 days. One patient had minor type Ia endoleak and one patient developed wound infection. There were no early open conversions and deaths. During a median follow-up of 43 months (range, 7-67 months), computed tomography angiography revealed type Ia endoleaks in four patients (16.7%). The overall reintervention and open conversion rates during follow-up were 16.7% (4/24) and 4.2% (1/24), respectively. Estimates of freedom from reintervention were 91.7% at 1 year, 87.1% at 3 years and 80.9% at 5 years. There was significant difference in freedom from reintervention between proximal para-anastomotic aneurysms patients treated with tube and unibody bifurcated stent grafts (p = 0.034). The cumulative mortality rate was 12.5% (3/24), actuarial analysis for all patients estimated survival rates of 95.8% at 1 year and 87.3% at 5 years. CONCLUSIONS: Proximal para-anastomotic aneurysms are severe complications after abdominal aortic aneurysm open reconstruction. Closer follow-up and prompt treatment are necessary. Endovascular treatment for proximal para-anastomotic aneurysms is effective, safe and durable. Unibody bifurcated stent graft proved to be suitable for most proximal para-anastomotic aneurysms with various anatomical features.
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