Relation between myocardial injury and postextrasystolic potentiation of regional function measured by two-dimensional echocardiography
نویسندگان
چکیده
منابع مشابه
Postextrasystolic Potentiation and Echocardiography
The purpose of this study was to determine whether echocardiography can be used to monitor postextrasystolic potentiation (PESP) and, if so, which of the echocardiographic variables are valid indicators of PESP and under what conditions. An implantable M-mode echocardiographic transducer was sewn to the right ventricular outflow tract of the dog heart to record continuously across the minor dia...
متن کاملEarly loss of postextrasystolic potentiation in acutely ischemic myocardium: evaluation by contrast two-dimensional echocardiography.
Studies in animals with acutely ischemic hearts have suggested that postextrasystolic potentiation (PESP) may predict the viability of dysfunctional myocardium. Most of these data have been obtained with sonomicrometers and therefore the presence and extent of PESP throughout the entire region at risk has not been defined. In this study we used contrast two-dimensional echocardiography (2DE) to...
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Regional differences in wall motion and wall thickening were quantitated in the normal left ventricle using two-dimensional echocardiography (2-D echo). Using a computer-aided system, the left ventricle was subdivided in a standardized manner into 40 segments of five 2-D echo short-axis cross sections from the mitral valve level to the low left ventricle or apex. Measurements of sectional and s...
متن کاملMyocardial Dyssynergy and Infarct Size by Two-dimensional Echocardiography
a decrease in LV ejection fraction. Two-dimensional echocardiographic measurements of dyssynergy were evaluated and compared in three subgroups against (1) the extent ofLV dyssynergy determined by force-gauge mapping during 10 coronary occlusions of 30-60 minutes' duration in eight open-chest dogs, (2) infarct size delineated by nitroblue tetrazolium (NBT) staining of left ventricular slabs aft...
متن کاملImmediate diagnosis of acute myocardial infarction by two-dimensional echocardiography.
To define the role of portable two-dimensional echocardiography (2-D echo) in the immediate diagnosis of acute chest pain syndrome, 80 consecutive patients were studied. Adequate 2-D echo studies were obtained in 65 (81%). Thirty-three patients had clinical evidence of transmural or nontransmural acute myocardial infarction (AMI), 18 of whom had nondiagnostic initial ECGs. Thirty-two did not ha...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1983
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(83)80376-3