Postprocedural Aortic Regurgitation in Balloon-Expandable and Self-Expandable Transcatheter Aortic Valve Replacement Procedures
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- 1 April 2014
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Circulation
- Vol. 129 (13), 1415-1427
- https://doi.org/10.1161/circulationaha.113.002677
Abstract
Background—: Significant postprocedural aortic regurgitation (AR) is observed in 10% to 20% of cases after transcatheter aortic valve replacement (TAVR). The prognostic value and the predictors of such a complication in balloon-expandable (BE) and self-expandable (SE) TAVR remain unclear. Methods and Results—: TAVR was performed in 3195 consecutive patients at 34 hospitals. Postprocedural transthoracic echocardiography was performed in 2769 (92%) patients of the eligible population, and these patients constituted the study group. Median follow-up was 306 days (Q1–Q3=178–490). BE and SE devices were implanted in 67.6% (n=1872) and 32.4% (n=897). Delivery was femoral (75.3%) or nonfemoral (24.7%). A postprocedural AR≥grade 2 was observed in 15.8% and was more frequent in SE (21.5%) than in BE-TAVR (13.0%, P =0.0001). Extensive multivariable analysis confirmed that the use of a SE device was one of the most powerful independent predictors of postprocedural AR≥grade 2. For BE-TAVR, 8 independent predictors of postprocedural AR≥grade 2 were identified including femoral delivery ( P =0.04), larger aortic annulus ( P =0.0004), and smaller prosthesis diameter ( P =0.0001). For SE-TAVR, 2 independent predictors were identified including femoral delivery( P =0.0001). Aortic annulus and prosthesis diameter were not predictors of postprocedural AR for SE-TAVR. A postprocedural AR≥grade 2, but not a postprocedural AR=grade 1, was a strong independent predictor of 1-year mortality for BE (hazard ratio=2.50; P =0.0001) and SE-TAVR (hazard ratio=2.11; P =0.0001). Although postprocedural AR≥grade 2 was well tolerated in patients with AR≥grade 2 at baseline (1-year mortality=7%), it was associated with a very high mortality in other subgroups: renal failure (43%), AR<grade 2 at baseline (31%), low transaortic gradient (35%), or nonfemoral delivery (45%). Conclusions—: Postprocedural AR≥grade 2 was observed in 15.8% of successful TAVR and was the strongest independent predictor of 1-year mortality. The use of the SE device was a powerful independent predictor of postprocedural AR≥grade 2.This publication has 23 references indexed in Scilit:
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