Transthoracic Doppler echocardiographic comparison of left internal mammary grafts to left anterior descending coronary artery with ungrafted right internal mammary arteries in patients with and without myocardial ischemia by dobutamine stress echocardiography

Transthoracic Doppler echocardiographic comparison of left internal mammary grafts to left anterior descending coronary artery with ungrafted right internal mammary arteries in patients with and without myocardial ischemia by dobutamine stress echocardiography

Autor Arruda, A. M. Google Scholar
Pellikka, P. A. Google Scholar
Mahoney, D. W. Google Scholar
Joseph, A. Google Scholar
Mathias, W. Google Scholar
Seward, J. B. Google Scholar
Instituição Mayo Clin & Mayo Fdn
Universidade Federal de São Paulo (UNIFESP)
Resumo To characterize Doppler flow patterns of the grafted left internal mammary artery (LIMA) in patients with and without dobutamine stress induced wall motion abnormalities in the graft distribution, we studied 29 patients who underwent coronary artery bypass surgery using LIMA grafts to the left anterior descending coronary artery (LAD). the ungrafted right internal mammary artery (RIMA) was used as a control. RIMA Doppler flow pattern was predominantly systolic in all patients. in patients without ischemia in the LAD distribution, LIMA flow was predominantly diastolic. in patients with ischemia, LIMA flow was predominantly systolic. in the grafted LIMA, a ratio of diastolic to systolic time-velocity integral of >1.5 best showed absence of ischemia in the graft distribution. in summary, characterization of the Doppler flow pattern in the internal mammary arteries is feasible. in the grafted LIMA, ratios of diastolic to systolic flow are less in patients with on ischemic response in the subtended vascular bed than in those without ischemia. (C)2000 by Excerpta Medica, Inc.
Idioma Inglês
Data de publicação 2000-11-01
Publicado em American Journal of Cardiology. New York: Excerpta Medica Inc, v. 86, n. 9, p. 919-922, 2000.
ISSN 0002-9149 (Sherpa/Romeo, fator de impacto)
Publicador Excerpta Medica Inc
Extensão 919-922
Fonte http://dx.doi.org/10.1016/S0002-9149(00)01122-X
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000165096000005
Endereço permanente http://repositorio.unifesp.br/handle/11600/26403

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