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Open Access 01-12-2014 | Research

Determinants of clinical improvement after surgical replacement or transcatheter aortic valve implantation for isolated aortic stenosis

Authors: Cristina Gavina, Alexandra Gonçalves, Carlos Almeria, Rosana Hernandez, Adelino Leite-Moreira, Francisco Rocha-Gonçalves, José Zamorano

Published in: Cardiovascular Ultrasound | Issue 1/2014

Abstract

Background

Transcatheter aortic valve implantation (TAVI) is an alternative to surgical aortic valve replacement (SAVR) in patients with aortic stenosis (AS) and high surgical risk. Hemodynamic performance after TAVI is superior, but the impact of reverse remodeling on clinical improvement is controversial. We aim to address the differences in hemodynamic changes between SAVR and TAVI, and its correlation with LV remodeling and clinical improvement at 6 months follow-up.

Methods

Forty-two patients treated by TAVI were compared with 45 SAVR patients with a stented bioprosthesis. Clinical, 2D and 3D echocardiographic data were prospectively obtained before and six months after intervention.

Results

Patients had similar distribution for sex, body surface area and AS severity. TAVI patients were older, more symptomatic and had more comorbidities. They also had higher LV filling pressures, larger 3D indexed left atrium volume, but similar 3D indexed LV mass. At 6 months, TAVI patients had greater clinical improvement and higher effective orifice area index (EAOI), but only SAVR patients already had a significant decrease in 3D indexed LV mass and diastolic volume. In univariate analysis older age, NYHA class ≥ III, increase in EAOI and TAVI were related with functional class improvement. After multivariate analysis only NYHA class ≥ III (OR 8.81, CI:2.13-36.52; p = 0.003) and an increase in EAOI ≥ 105% (OR 3.87, CI:1.02-14.70; p = 0.04) were predictors of clinical improvement.

Conclusions

At 6 months, functional class improvement was greater after TAVI. Higher initial NYHA class and an increase in EAOI ≥ 105% were independently associated with functional enhancement. It is debatable if left ventricular remodeling is determinant for functional class improvement.

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Title: Determinants of clinical improvement after surgical replacement or transcatheter aortic valve implantation for isolated aortic stenosis
Authors: Cristina Gavina
Alexandra Gonçalves
Carlos Almeria
Rosana Hernandez
Adelino Leite-Moreira
Francisco Rocha-Gonçalves
José Zamorano
Publication date: 01-12-2014
Publisher: BioMed Central
Published in: Cardiovascular Ultrasound / Issue 1/2014
Electronic ISSN: 1476-7120
DOI: https://doi.org/10.1186/1476-7120-12-41

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