Background: Post-implantation paravalvular leak (PVL) remains a significant complication of transcatheter aortic valve implantation (TAVI). More importantly, its occurrence may impact long-term mortality.
Aim: We sought to evaluate the effects of balloon post-dilatation (PD) on the reduction of PVL and mortality in patients undergoing TAVI.
Methods: A total of 101 consecutive patients undergoing TAVI were enrolled. Angiography, echocardiography, and the aortic regurgitation index (ARI) were used to assess the severity of PVL before and after balloon PD. Patients were divided into two groups based whether or not PD after TAVI was performed. Reduction of PVL, change of ARI, and clinical outcomes were assessed.
Results: Balloon post-dilatation was performed in 23 (22.8%) patients. In 95.6%, PVL reduction was successful (no or mild PVL). PD increased the ARI from 23.4% (22.4-24.0) to 27.1% (26.1-28.3); p < 0.001. Thirty-day mortality rate was 14.1% in the PD (-) group vs. 0.0% in the PD (+) group; p = 0.07. One-year mortality (21.8% vs. 4.3%, p = 0.97) and procedural stroke rate (7.7% vs. 8.7%, p = 0.99) were not different between the groups.
Conclusions: Balloon post-dilatation may be a safe and effective technique to reduce moderate to severe PVL after TAVI.
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