title: [An echocardiographic study of the isovolumetric relaxation period in the myocardial infarction (author's transl)].
abstract: Variations have been examined in the left ventricle's transverse dimension (TD) during the isovolumic relaxation period (IRP) in 12 healthy subjects and in 38 patients with anterior or antero-inferior infarct. Healthy subjects have shown no increase in TD during the IRP whereas this fact has been noted in 24 out of 38 (63%) patients with different distribution according to the site of the infarct (29%) for inferior infarcts and 86% for anterior or antero-inferior infarcts). These results suggest that inferior infarct compared with anterior infarct, implies a less incoordinate ventricular contraction. It is thus stressed the opportunity of echocardiography approach for the identification of the incoordinate ventricular contraction and for the determination of IRP duration which may be exposed to serious mistakes using the traditional phono-apexcardiographic method.
mesh_terms: D000328:Adult; D000368:Aged; D003971:Diastole; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000503:physiopathology*; D010701:Phonocardiography
vernacular_title: Studio ecocardiografico della diastole isovolumetrica nell'infarto cardiaco.