Augmentation of regional function in nonischemic myocardium during coronary occlusion measured with two-dimensional echocardiography
نویسندگان
چکیده
منابع مشابه
Effect of afterload alterations on the functional border zone measured with two-dimensional echocardiography during acute coronary occlusion.
In the setting of acute myocardial infarction, pharmacologic intervention resulting in afterload changes are common but the effect of these changes on regional left ventricular function, and specifically the functional border zone, has not been fully investigated. Accordingly, we studied the effects of afterload manipulation on circumferential flow-function relationships and the functional bord...
متن کاملQuantitation of Regional Cardiac Function by Two-dimensional Echocardiography
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 کاملRegional Myocardial Function during Acute Coronary Artery Occlusion
Myocardial regional function during acute coronary artery occlusion was studied using ultrasonic dimension gauges in open-chest dogs. Three pairs of 2mm ultrasonic crystals were implanted 1 cm apart near the endocardium in an ischemic segment, a control segment, and a segment at the margin of the ischemic zone. In the ischemic segment, coronary artery occlusion resulted in prompt dyskinesis whi...
متن کاملInterregional differences in the systolic and diastolic response of nonischemic myocardium to remote coronary occlusion.
BACKGROUND Previous work showed a twofold increase in stiffness of nonischemic myocardium at the base during ischemia of the left anterior wall. Whether the diastolic response of nonischemic myocardium to remote ischemia depends on the localization of the ischemic or the nonischemic area is unknown. METHODS In dogs with open chests, regional function in ischemic and nonischemic myocardium was...
متن کاملRegional left ventricular function during transient coronary occlusion: relation with coronary collateral flow.
OBJECTIVE To test the hypothesis that regional left ventricular (LV) function during balloon angioplasty is related to the amount of collateral flow to the ischaemic region. DESIGN Prospective study. SETTING Tertiary referral centre. METHODS In 50 patients with coronary artery disease and without myocardial infarction, regional systolic and diastolic LV function was determined using tissu...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1990
ISSN: 0735-1097
DOI: 10.1016/0735-1097(90)90476-6