Haemodynamic interpretation of the pressure pulse Sample Clauses

Haemodynamic interpretation of the pressure pulse. It is clear that the pressure pulse contour contains vital information on ventricular and vascular functions and therefore much effort has been devoted to model the pressure pulse in order to establish its haemodynamic determinants. Currently the wave propagation model 18 is the most widely accepted explanation for the pressure pulse. It is a one dimensional model describing wave travel in the forward and backward plane. A forward pressure wave (FPW), generated by left ventricular contraction travels distally along the aorta and its tributaries at a given speed termed pulse wave velocity (PWV). PWV is closely related to aortic characteristic impedance (Zc) which determines the ratio of forward pressure wave to flow in the absence of pressure wave reflection. This relationship can be represented by a modified water hammer equation18 as: Z = 4ρ. PWV
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