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The Effect of Post-Dilatation on Outcomes in the PARTNER 2 SAPIEN 3 Registry
Rebecca T Hahn1, Philippe Pibarot2, Jonathon Leipsic3
1Columbia University Medical Center/NY Presbyterian Hospital, New York, New York.
Insights
Balloon post-dilatation (BPD) in SAPIEN 3 transcatheter aortic valve replacement is more common in patients with less oversizing and more calcification. BPD does not increase procedural complications or 1-year adverse events like death or stroke.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Medical Devices
Background:
- Outcomes and hemodynamics of balloon post-dilatation (BPD) for the SAPIEN 3 valve have not been previously reported.
- Aortic stenosis management is evolving with transcatheter aortic valve replacement (TAVR) technologies.
Purpose of the Study:
- To evaluate the impact of balloon post-dilatation (BPD) on outcomes and procedural complications in patients undergoing TAVR with the SAPIEN 3 valve.
- To assess the safety and efficacy of BPD in intermediate and high surgical risk patients.
Main Methods:
- The PARTNER 2 SAPIEN 3 observational study included 1,661 patients (intermediate and high surgical risk).
- Outcomes and complications were assessed in patients who underwent BPD (n=208) versus those who did not.
- Baseline characteristics, procedural data, and 30-day and 1-year outcomes were analyzed.
Main Results:
- BPD was associated with significantly larger aortic valve area but also more paravalvular regurgitation.
- No increase in permanent pacemaker, annular rupture, or valve embolization was observed with BPD.
- While 1-year minor stroke incidence was higher in the BPD group initially, this difference was not significant after adjusting for baseline characteristics.
Conclusions:
- Balloon post-dilatation is frequently used in patients with less oversizing and greater calcification during SAPIEN 3 TAVR.
- BPD is not linked to increased procedural complications or adverse 1-year outcomes including death, rehospitalization, or stroke.
Objectives:
The purpose of this study was to understand the effects of balloon post-dilatation on outcomes following transcatheter aortic valve replacement with the SAPIEN 3 valve.
Background:
Hemodynamics and outcomes with balloon post-dilatation for the SAPIEN 3 valve have not been previously reported.
Methods:
The effects of balloon post-dilatation (BPD) in 1,661 intermediate (S3i cohort) and high surgical risk (S3HR cohort) patients with aortic stenosis enrolled in the PARTNER (Placement of Aortic Transcatheter Valves) 2, SAPIEN 3 observational study on outcomes, as well as procedural complications, were assessed.
Results:
208 of 1,661 patients (12.5%) had BPD during the initial transcatheter aortic valve replacement. Baseline characteristics were similar except BPD had higher STS score (p < 0.001), significantly less % oversizing (p = 0.004), significantly more ≥moderate left ventricular outflow tract calcification (p = 0.005), and severe annular calcification (p = 0.006). BPD patients had no increase in permanent pacemaker, annular rupture, or valve embolization. Following transcatheter aortic valve replacement, BPD patients had significantly larger aortic valve area (1.72 ± 0.41 cm2 vs. 1.66 ± 0.37 cm2; p = 0.04) with no significant difference in prosthesis-patient mismatch (p = 0.08) or transvalvular aortic regurgitation (p = 0.65), but significantly more paravalvular regurgitation (p < 0.01). There was no significant difference in 30-day or 1-year outcomes of all-cause death (p = 0.65 to 0.76) or stroke (p = 0.28 to 0.72). However, at 1 year, there was a significantly higher incidence of minor stroke in BPD patients (p = 0.02). Adjusting for baseline differences, including calcium burden, minor strokes were no longer significantly different between the BPD and NoBPD groups (p = 0.21).
Conclusions:
BPD is performed more frequently in patients with lower % oversizing and greater calcium burden. BPD is not associated with procedural complications or an increase in 1-year adverse events of death, rehospitalization, or stroke.
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