Key result
The hydraulic input impedance to the vascular bed in dogs consists of an impedance magnitude that initially decreases rapidly with frequency and then increases gradually, with pressure lagging flow.
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Characterizes vascular load in dogs; leaves open translation to human hemodynamics and modeling.
Patel et al. (1963) studied Hydraulic input impedance to aorta and pulmonary artery (n=18). Measurement of pressure-flow relationships was evaluated on Hydraulic input impedance to the vascular bed. The hydraulic input impedance to the vascular bed in dogs consists of an impedance magnitude that initially decreases rapidly with frequency and then increases gradually, with pressure lagging flow.