Longitudinal distribution of vascular resistance in the pulmonary arteries, capillaries, and veins

• Text
• PDF

Abstract

A new method has been described for measuring the pressure and resistance to blood flow in the pulmonary arteries, capillaries, and veins. Studies were performed in dog isolated lung lobes perfused at constant flow with blood from a donor dog. Pulmonary artery and vein volume and total lobar blood volume were measured by the ether plethysmograph and dyedilution techniques. The longitudinal distribution of vascular resistance was determined by analyzing the decrease in perfusion pressure caused by a bolus of low viscosity liquid introduced into the vascular inflow of the lobe.

Authors

Jerome S. Brody, Edward J. Stemmler, Arthur B. DuBois