Dobutamine stress echocardiography identifies patients with angina and dynamic left ventricular outflow obstruction in physiological exercise.
Echocardiography
; 26(3): 272-80, 2009 Mar.
Article
em En
| MEDLINE
| ID: mdl-19175778
ABSTRACT
BACKGROUND AND METHODS:
To determine whether patients with no heart disease who develop dynamic left ventricular outflow obstruction (DLVOTO) during dobutamine echocardiography (DE) reproduce the phenomenon during exercise echocardiography (EE), DE and EE were performed in 78 patients (59 +/- 9 years) with effort angina and no alterations in SPECT. Thirty-eight (48.7%) patients had DLVOTO during DE and 15 (19.2%) during EE. This phenomenon during EE was reproducible in 39.4% of the patients with DLVOTO on DE, and 100% of the patients with DLVOTO during EE had it during DE. Independent factors predicting DLVOTO during EE were the LVOT diameter (OR 0.33 (0.14-0.74)) and the left ventricular (LV) mass index (OR 1.05 (1.01-1.08)). No cardiovascular events were noted after 26+/-3 months. The reproducibility of DLVOTO during EE in patients with unexplained angina and with DLVOTO on DE is associated with the size of the LVOT and the LV mass index. The long-term prognosis is excellent.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Obstrução do Fluxo Ventricular Externo
/
Ecocardiografia
/
Dobutamina
/
Teste de Esforço
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Angina Pectoris
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Echocardiography
Assunto da revista:
CARDIOLOGIA
/
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Espanha