An analysis of pulsatile microcirculation in cat lung, with special attention to the pulmonary microvascular impedance, is presented. A theoretical calculation is made on the basis of a complete set of experimental data on the morphology and elasticity of cat’s pulmonary capillary sheets. The transfer matrix of the pulmonary microvascular impedance is obtained. The input impedance at the capillary entrance and exit are determined. The input impedance at the pulmonary arterial trunk is compared under various physiological conditions. It is shown that although the impact of pulmonary microcirculation on the relationship between the steady mean flow and pressure in the pulmonary arteries and veins is decisively large, the influence of the alveolar microcirculation on the input impedance at the pulmonary arterial trunk is small. [S0148-0731(00)01101-8]
Microcirculation Impedance Analysis in Cat Lung
Contributed by the Bioengineering Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Bioengineering Division November 24, 1998; revised version received August 22, 1999. Associate Technical Editor: S. P. Sutera.
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Gao, J., Huang, W., and Yen, R. T. (August 22, 1999). "Microcirculation Impedance Analysis in Cat Lung." ASME. J Biomech Eng. February 2000; 122(1): 99–103. https://doi.org/10.1115/1.429647
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