Small iliac gates of an ultra-low-profile aortic endograft are not associated with high iliac limb graft occlusion rates after endovascular aneurysm repair
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Authors
Chaudhuri, A
Badawy, A
El Shaarawy, S
Issue Date
2022
Type
Published Abstract
Language
Keywords
Research Subject Categories::MEDICINE::Dermatology and venerology,clinical genetics, internal medicine::Internal medicine::Cardiology
Alternative Title
Abstract
Purpose: Recent studies indicate device-specific trends in iliac limb graft occlusion (LGO) after endovascular aneurysm repair (EVAR), ranging from 0.7-12.4%. These do not include the ultra-low-profile Ovation Prime/iX endograft (Endologix Inc, Irvine, USA) which has the smallest iliac gates measuring 9mm, 11mm (luminal area 0.64, 0.95cm2 respectively). This study audits LGO rates and related outcomes after EVAR using this device. Materials and methods: A retrospective analysis of a prospective database was undertaken. Generic/outcome/follow-up data including gate sizes according to aortic body (AB), LGO, limb-related reinterventions (LRI) were collected. Statistical analyses were undertaken using Minitab 21. Results: 125 EVARs were undertaken in 105 male, 20 female patients (age 74.8±0.7years, abdominal aortic aneurysm size 5.8±1cm) over 2014-2020; 121 patients were available for data analysis after excluding 30-day mortalities (n=4). 18 EVARs were undertaken using 20/23mm ABs representing 9mm gates (n=36), whilst the remaining 103 EVARs used 26/29/34mm ABs, representing 11mm gates (n= 206). 10 patients were not on antiplatelet/anticoagulation therapy. Median follow-up period was 28 (IQR 12-48) months. LGO occurred in 2 (0.8%) limbs (11mm), LRI in 3 (1.2%; 11mm gates, n=2, 9mm gate, n=1); There was no significant difference in LGO/LRI rates between the 9/11mm gates (p=NS, Fisher’s exact test). Overall freedom from LGO/LRI was >96% (Kaplan-Meier method). Conclusion: The smaller Ovation endograft iliac gates were not associated with high LGO rates compared to the literature. This is reassuring from a surveillance standpoint as this device has now been replaced by the Ovation Alto (11mm gates for all AB sizes).
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Citation
TY - JOUR AU - Chaudhuri, Arindam AU - Badawy, Ayman AU - Alshaarawy, Sohib PY - 2022/09/11 SP - S521 T1 - Small iliac gates of an ultra-low-profile aortic endograft are not associated with high iliac limb graft occlusion rates after endovascular aneurysm repair. VL - JO - CardioVascular and Interventional Radiology ER -