Browsing by Author "Flewitt, Jacqueline Allison"

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    Left ventricular filling dynamics
    (2006) Flewitt, Jacqueline Allison; Tyberg, John V.
    The Windkessel theory was effectively incorporated into wave intensity analysis (WIA) by correcting left ventricular (L V) wave intensity results for the effects of compliance. The corrected WIA revealed a sixty percent greater role of diastolic suction in early filling than previously calculated. 1 The backward expansion wave of diastolic suction consistently prevailed over the forward compression wave of LA passive decompression in determining the acceleration portion of the E wave. Little evidence of wave action was found to explain the deceleration portion of the E wave and an equilibrating reservoir model was proposed. A number of inconsistencies were found between the early filling velocity and flow waveforms which are believed to be a function of the changing mitral valve area. It is proposed that the morphodynamic advantage is to maintain and conserve momentum through the mitral valve in preparation for ventricular ejection.