Ventricular Remodeling after Myocardial Infarction

摘要: Acute transmural myocardial infarction initiates a series of changes in left ventricular (LV) volume, regional function and geometry. This process, known as postinfarction LV remodeling, may continue for months or years following the initial ischemic event. To characterize components late biplane ventriculography was performed 52 patients at 3 weeks repeated 1 year after first anterior infarction. Biplane circumference contractile noncontractile segment lengths were measured. Global geometry evaluated by calculating sphericity index assessed measurement endocardial curvature. End-diastolic (ED) volume increased enlarged further one year. enlargement accompanied an increase length sphericity, whereas decreased. Curvature analysis revealed that this resulted from flattening regions presumably high tension negative curvature infarct border zone less bulging infarcted wall. Even selected (change ED > 20 ml, n = 19), both lengthening without change length. Thus, results is not result progressive expansion.