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Video densitometric assessment of aortic regurgitation after transcatheter aortic valve implantation: results from the Brazilian TAVI registry.
EuroIntervention ; 11(12): 1409-18, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26999681
ABSTRACT

AIMS:

We sought to examine the feasibility and reproducibility of a new video densitometric (VD) quantification of aortic regurgitation (AR) on aortography, and its long-term clinical impact.

METHODS AND RESULTS:

Using dedicated video densitometry software, AR after TAVI was quantified, and inter- and intra-observer reproducibility was investigated in 182 aortograms of the Brazilian TAVI registry. The aortograms were analysed using two software algorithms: 1) the quantitative regurgitation analysis (qRA) index interrogating the entire left ventricle (LV), and 2) a new method with the left ventricle outflow tract (LVOT) as a region of interest (ROI) (LVOT-AR). LVOT-AR was feasible in 64.8% vs. 29.7% of aortograms, compared with qRA index. Using the LVOT-AR, inter-observer variability was low (mean difference±standard deviation [SD]: 0.01±0.05, p=0.53), and the two observers' measurements were highly correlated (r=0.95, p<0.001). Patients with LVOT-AR >0.17 had a significantly higher one-year all-cause mortality risk compared with patients with LVOT-AR ≤0.17 (37.1% vs. 11.2%, p=0.0008).

CONCLUSIONS:

This study proposes an alternative methodology for AR assessment after TAVI by using the LVOT method (LVOT-AR) of VD angiography. The assessment of LVOT-AR is feasible, reproducible and potentially predictive of one-year mortality.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Valva Aórtica / Insuficiência da Valva Aórtica / Estenose da Valva Aórtica / Aortografia / Cateterismo Cardíaco / Implante de Prótese de Valva Cardíaca / Densitometria Aspecto clínico: Etiologia / Predição / Prognóstico País/Região como assunto: América do Sul / Brasil Idioma: Inglês Revista: EuroIntervention Assunto da revista: Angiologia / Cardiologia / Terapêutica Ano de publicação: 2016 Tipo de documento: Artigo País de afiliação: Holanda