Real-Time Fluoroscopic Assessment of Underexpansion Predicts Hemodynamic Valve Deterioration Following TAVR With Balloon-Expandable Device.
Publisher DOI
PubMed ID
41240026
Abstract
Background
The clinical sequelae of transcatheter heart valve (THV) underexpansion following transcatheter aortic valve replacement (TAVR) with balloon-expandable devices remain incompletely understood.Objectives
The aim of this study was to investigate the impact of THV underexpansion on clinical outcomes among patients treated with balloon-expandable TAVR.Methods
Consecutive patients undergoing transfemoral TAVR with the SAPIEN 3 and SAPIEN 3 Ultra systems in the prospective Bern TAVI registry were retrospectively evaluated. THV underexpansion was assessed on postimplantation fluoroscopic images and quantified using the validated commissural post height method. Significant THV underexpansion was defined as a reduction in stent frame midportion diameter ≥20% compared with the nominal diameter, using an optimal cutoff value determined by maximizing the log-rank statistic. The outcomes of interest were moderate or severe hemodynamic valve deterioration (HVD) according to the Valve Academic Research Consortium 3 and all-cause and cardiovascular mortality at 5-year follow-up.Results
Among 1,043 patients (median age 81 years; Q1-Q3: 76-85 years; 34.6% women) undergoing TAVR with SAPIEN 3 or SAPIEN 3 Ultra valves between 2014 and 2022, 57 (5.4%) exhibited THV underexpansion. THV underexpansion ≥ 20% was associated with an increased risk for HVD at 5-year follow-up (subdistribution HR: 4.88; 95% CI: 2.18-10.97). The risk for HVD gradually increased with increasing degree of underexpansion (subdistribution HR: 1.94 per 5% increase; 95% CI: 1.42-2.79), with consistent findings across all valve sizes. Total aortic valve calcium volume, bicuspid anatomy, and valve iteration were significant predictors of THV underexpansion. At 862-day follow-up (Q1-Q3: 366-1,812 days), underexpansion was not associated with mortality.Conclusions
Underexpansion of balloon-expandable THVs is associated with an increased risk for HVD at mid-term follow-up.
The clinical sequelae of transcatheter heart valve (THV) underexpansion following transcatheter aortic valve replacement (TAVR) with balloon-expandable devices remain incompletely understood.Objectives
The aim of this study was to investigate the impact of THV underexpansion on clinical outcomes among patients treated with balloon-expandable TAVR.Methods
Consecutive patients undergoing transfemoral TAVR with the SAPIEN 3 and SAPIEN 3 Ultra systems in the prospective Bern TAVI registry were retrospectively evaluated. THV underexpansion was assessed on postimplantation fluoroscopic images and quantified using the validated commissural post height method. Significant THV underexpansion was defined as a reduction in stent frame midportion diameter ≥20% compared with the nominal diameter, using an optimal cutoff value determined by maximizing the log-rank statistic. The outcomes of interest were moderate or severe hemodynamic valve deterioration (HVD) according to the Valve Academic Research Consortium 3 and all-cause and cardiovascular mortality at 5-year follow-up.Results
Among 1,043 patients (median age 81 years; Q1-Q3: 76-85 years; 34.6% women) undergoing TAVR with SAPIEN 3 or SAPIEN 3 Ultra valves between 2014 and 2022, 57 (5.4%) exhibited THV underexpansion. THV underexpansion ≥ 20% was associated with an increased risk for HVD at 5-year follow-up (subdistribution HR: 4.88; 95% CI: 2.18-10.97). The risk for HVD gradually increased with increasing degree of underexpansion (subdistribution HR: 1.94 per 5% increase; 95% CI: 1.42-2.79), with consistent findings across all valve sizes. Total aortic valve calcium volume, bicuspid anatomy, and valve iteration were significant predictors of THV underexpansion. At 862-day follow-up (Q1-Q3: 366-1,812 days), underexpansion was not associated with mortality.Conclusions
Underexpansion of balloon-expandable THVs is associated with an increased risk for HVD at mid-term follow-up.
Date Issued
2025-12-22
Publication Type
Article
Subject(s)
Subjects
TAVR
•
hemodynamic valve deterioration
•
underexpansion
Language(s)
en
Author(s)
Alaour, Bashir | |
Meier, David |
Additional Credits
Journal
JACC: Cardiovascular Interventions
Publisher
Elsevier
ISSN
1876-7605
1936-8798
Access(Rights)
open.access