ArticleJACC. Case reports2026
Ex Vivo Intravascular Ultrasound Assessment of Transcatheter Valve Deformation in Bicuspid Anatomy.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Seeing Beyond the Silhouette: Understanding Transcatheter Valve Mechanics in Bicuspid Aortic Stenosis.JACC. Case reports · 2026Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTranscatheter heart valve (THV) deployment in severely calcified bicuspid aortic valve (BAV) can result in complex frame deformation. Large field-of-view intravascular ultrasound (IVUS) offers a tomographic real-time assessment of this phenomenon. CASE SUMMARY: A 53-year-old male underwent surgery for severe calcific BAV stenosis. Ex vivo, a 26-mm Evolut THV was deployed inside the excised BAV specimen without balloon predilatation or postdilatation to preserve native calcified constraints. Automated IVUS pullback with a 10-MHz IVUS (Visions PV .035, Philips) over a 0.035-inch guidewire revealed severe inflow constraint (41.2% expansion) but preserved expansion at the leaflet nadir (107.6%) and coaptation (104.5%) levels. DISCUSSION: While recent clinical computed tomography studies report THV frame decoupling, real-time procedural imaging remains limited. This case provides direct mechanistic proof of how a rigid calcified raphe causes this segmental deformation. TAKE-HOME MESSAGES: IVUS demonstrated inflow-to-functional-frame decoupling. Severe inflow constraint may coexist with preserved supra-annular leaflet-level expansion.
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