title: Significance of the apexcardiogram in non-invasive assessment of postextrasystolic potentiation.
abstract: The study  revealed the usefulness of the apexcardiogram in the assessment of the contractile state of left ventricle in cases of ventricular extrasystolia. The pre-ejection period/left ventricular ejection time (PEP/LVET) ratio and isovolumic contraction period (IVCP) are good parameters for demonstrating the postextrasystolic potentiation, the lack of which occurs in severe heart failure. PEP/LVET and IVCP are R-R-interval dependent in parasystolia. In the establishment of the postextrasystolic potentiation, the authors contribute an important role to the ventricular filling during the compensatory pause.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005117:Cardiac Complexes, Premature / Q000209:etiology / Q000503:physiopathology*; D006332:Cardiomegaly / Q000150:complications; D009202:Cardiomyopathies / Q000150:complications / Q000503:physiopathology*; D003327:Coronary Disease / Q000150:complications / Q000503:physiopathology*; D006333:Heart Failure / Q000150:complications; D006801:Humans; D007702:Kinetocardiography; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications