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  • Title: Describing the pumping heart as a pressure source.
    Author: Danielsen M, Ottesen JT.
    Journal: J Theor Biol; 2001 Sep 07; 212(1):71-81. PubMed ID: 11527446.
    Abstract:
    The pumping heart is described by a new mathematical approach which considers the heart as a pressure source depending on time, volume and flow. This new approach allows a separation between isovolumic (non-ejecting) and ejecting heart properties. The computed results cover most of the features of the human ventricle during normal and altered vascular conditions. It is shown that the time-varying elastance concept is disqualified as an independent description of the heart, it follows from isovolumic heart properties and an ejection effect which consists of positive and negative effects of ventricular blood ejection.
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