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A multicenter experience of three different "iliac branched" stent grafts for the treatment of aorto-iliac and/or iliac aneurysms.

BACKGROUND: The aim of study was to assess the safety and effectiveness of 3 different commercial iliac branch devices (IBDs): the Zenith Branch Iliac Endovascular Graft; the Gore Excluder Iliac Branch System and the E-liac Stent Graft System for the treatment of aorto-iliac or iliac aneurysms.

METHODS: From January 2017 to February 2020, a retrospective reviewed was conducted on a total of 96 patients. Primary endpoint was IBD instability rate at 24-months. Secondary endpoints included onset of any endoleaks, buttock claudication, IBD-related reintervention and all-death rates, post-operative acute kidney and changes in maximum diameter from baseline of the aortic aneurysmal sac.

RESULTS: At 24 months, the branch instability rate was similar amongst the three IBDs employed [Jotec 1/24 (4.1%), Gore 1/12 (8.3%), Cook 6/47 (12.7%), p-value = 0.502]. As well, no statistical difference in terms of branch-occlusion and branch-related endoleaks was observed. The Jotec group showed a significant decrease in maximum diameter from the baseline of the aortic aneurysmal sac when compared to the Gore group alone. No other differences were found relevant to the onset of any endoleaks, reinterventions and all-death rates. At 24-months, the Kaplan-Meier estimate of survival freedom from any branch instability was 95.8%, 91.6% and 86.8% for Jotec, Gore and Cook groups, respectively.

CONCLUSIONS: The use of IBDs represents a safe method for preserving patency of the IIA during treatment of aorto-iliac or iliac aneurysms providing a low rate of IBD instability.

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