Key result
Oversizing aortic endografts by 10-30% for aneurysmal disease and ~10% for dissections is recommended to prevent propagation and avoid Type I endoleak or stent-graft induced tear.
Why the study?
What is the optimal degree of oversizing when landing a Zenith TX2 Endograft into a Dacron Gelweave graft during TEVAR?
What is the optimal degree of oversizing when landing a Zenith TX2 Endograft into a Dacron Gelweave graft during TEVAR?
Answers are grounded in this paper and cite their sources.
This editorial discusses the optimal degree of oversizing when landing a Zenith TX2 Endograft into a Dacron Gelweave graft, as opposed to native aorta.
When planning for a TEVAR, there are general principles of sizing – 10-30% oversizing for aneurysmal disease and ∼10% oversizing for dissections to prevent propagation. Clinical data has borne out worse outcomes (either increased rate of Type I endoleak or stent-graft induced tear) when straying too far from these rules of thumb.1,2 However, clinical data associated with these guidelines are based on landing stents in native aorta. The study by Prendes et al3 looks at the optimal degree of oversizing when landing the Zenith TX2 Endograft into a Dacron Gelweave graft.
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Saideep Bose (2023) conducted an editorial in Aneurysmal disease and dissections. Aortic endograft oversizing was evaluated. Oversizing aortic endografts by 10-30% for aneurysmal disease and ~10% for dissections is recommended to prevent propagation and avoid Type I endoleak or stent-graft induced tear.
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