Left ventricular diastolic function is strongly correlated with active emptying of the left atrium: a novel analysis using three-dimensional echocardiography.
Cardiovasc Ultrasound
; 14(1): 43, 2016 Oct 07.
Article
em En
| MEDLINE
| ID: mdl-27717383
ABSTRACT
BACKGROUND:
Increased left atrial (LA) dimensions are known to be a risk factor in predicting cardiovascular events and mortality and to be one key diagnostic tool to assess diastolic dysfunction. Currently, LA measurements are usually conducted using 2D-echocardiography, although there are well-known limitations. Real-time 3D-echocardiography is able to overcome these limitations, furthermore being a valid measurement tool compared to reference standards (e.g. cardiac magnetic resonance imaging). We investigated LA function and volume and their association to left ventricular (LV) diastolic function, using newly designed and validated software for 3D-echocardiographic analysis. This software is the first to allow for a sophisticated analysis of both passive and active LA emptying.METHODS:
We analyzed 2D- and 3D-echocardiographic measurements of LA volume and function in 56 subjects and compared the results between patients with normal LV diastolic function (NDF) (n = 30, 52 ± 15 years, BMI 24.7 ± 2.6 kg/m2) and patients in which diastolic dysfunction (DDF) was suspected (n = 26, 65 ± 9 years, BMI 26.7 ± 3.7 kg/m2).RESULTS:
Volumes during LA active emptying were significantly smaller in DDF compared to NDF (active atrial stroke volume (ASV) 3.0 (0.1-4.5) vs. 5.5 (2.7-7.8) ml, p = 0.005; True-EF 7.3(0.1-11.5) vs. 16.2 (8.1-25.4) %, p = 0.002). Furthermore, ASV showed a stronger association to E/e'mean than all other measured LA volumes (ß = - 0.35, p = 0.008). Neither total stroke LA volume, nor maximum or minimum LA volume differed significantly between the groups.CONCLUSIONS:
Diastolic LV dysfunction results in a reduction in active LA emptying, which is more strongly associated with LV filling pressure than other previously investigated LA parameters.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Volume Sistólico
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Função do Átrio Esquerdo
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Função Ventricular Esquerda
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Disfunção Ventricular Esquerda
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Ecocardiografia Tridimensional
Tipo de estudo:
Guideline
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Cardiovasc Ultrasound
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
/
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Alemanha