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  • Title: Significance of the apexcardiogram in non-invasive assessment of postextrasystolic potentiation.
    Author: Strausz I, Baráth P, Kékes E, Szántó A.
    Journal: Cor Vasa; 1978; 20(4):255-63. PubMed ID: 83217.
    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.
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