Your browser doesn't support javascript.
loading
Immediate improvement of dysfunctional myocardial segments after coronary revascularization: detection by intraoperative transesophageal echocardiography.
J Am Coll Cardiol ; 4(6): 1123-34, 1984 Dec.
Article en En | MEDLINE | ID: mdl-6334108
ABSTRACT
To ascertain the immediate effects of coronary artery bypass grafting on regional myocardial function, intraoperative transesophageal two-dimensional echocardiograms were obtained in 20 patients using a 3.5 MHz phased array transducer at the tip of a flexible gastroscope. Cross-sectional images of the left ventricle were obtained at multiple levels before skin incision and were repeated serially before and immediately after cardiopulmonary bypass. Using a computer-aided contouring system, percent systolic wall thickening was determined for eight anatomic segments in each patient at similar loading conditions (four each at mitral and papillary muscle levels). Of the 152 segments analyzed, systolic wall thickening improved from a prerevascularization mean value (+/- SEM) of 42.7 +/- 2.9% to a postrevascularization mean value of 51.6 +/- 2.6% (p less than 0.001). Thickening improved most in those segments with the worst preoperative function (p less than 0.001). Chest wall echocardiograms obtained 8.4 +/- 2.3 days after operation showed no deterioration or further improvement in segmental motion compared with transesophageal echocardiograms obtained after revascularization. Thus regional myocardial function frequently improves immediately after bypass grafting, with increases in regional thickening being most marked in those segments demonstrating the most severe preoperative dysfunction, and this improvement appears to be sustained; and in some patients, chronic subclinical ischemic dysfunction is present which can be improved by revascularization.
Asunto(s)
Buscar en Google
Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Ecocardiografía / Puente de Arteria Coronaria / Enfermedad Coronaria Tipo de estudio: Diagnostic_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Am Coll Cardiol Año: 1984 Tipo del documento: Article
Buscar en Google
Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Ecocardiografía / Puente de Arteria Coronaria / Enfermedad Coronaria Tipo de estudio: Diagnostic_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Am Coll Cardiol Año: 1984 Tipo del documento: Article