ArticleCatheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions2026
Long-Term Impact of Prosthesis-Patient Mismatch After Transcatheter Aortic Valve Replacement in Patients With Small Aortic Annuli.
Article in Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundProsthesis-patient mismatch (PPM) remains common following transcatheter aortic valve replacement (TAVR) and is associated with worse clinical outcomes. PPM is of particular concern in small aortic annuli (SAA).
aimsTo compare the incidence, predictors, and long-term impact of PPM in SAA TAVR.
methodsSingle-center retrospective registry analysis of native, severe aortic stenosis patients with computed tomography-derived annulus area ≤ 430 mm², undergoing TAVR via transfemoral access. Significant PPM was defined as moderate and above and classified by the Valve Academic Research Consortium (VARC)-3. Additional analyses were conducted for predicted PPM and gender-based criteria. Inverse probability treatment weighting (IPTW) was applied to identify predictors of significant PPM and long-term mortality.
resultsThe cohort included 631 consecutive patients with SAA undergoing TAVR between 2015 and 2024. Significant PPM occurred in 23.3%. Multivariable analyses identified BEV implantation (OR 2.1, 95% CI 1.3-4.9, p < 0.001) and larger body surface area (OR 4.6, 95% CI 1.7-18.8, p < 0.001) as independent predictors of PPM. Large annulus perimeter had a protective association (OR 0.85, 95% CI 0.79-0.91, p < 0.001). Five-year mortality was significantly higher among patients with significant PPM (32.0% vs. 25.4%; log-rank p = 0.008). Age (HR 1.04, 95% CI 1.004-1.07, p = 0.03), moderate and above paravalvular leak (HR 3.25, 95% CI 1.3-8.0, p = 0.01), and significant PPM (HR 1.97, 95% CI 1.2-3.1, p = 0.004) were independently associated with 5-year mortality.
conclusionsSignificant PPM remains highly prevalent following SAA TAVR. BEV implantation and larger BSA were associated with significant PPM, and a larger implanted valve had a protective association. Significant PPM is independently associated with long-term mortality.
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