Hypercapnia refers to a resting condition with hypoventilation, where P aCO2 is higher.When the distanceīetween the capillary blood and the cells is large, diffusion becomes a limiting Tension in the pulmonary capillaries and the alveolar lumen. Per unit of pressure gradient (D L = V ° O2 / D P ).Įxchange is a condition where equilibration does not occur between the gas
Diffusion is a transport of atoms or molecules caused by their random thermalĬapacity for the lung (D L ) is defined as the volume of gas diffusing through the lung barrier per min and. Leaving the left (or the right) ventricle each min. Uptake of oxygen molecules into the passing pulmonary blood - into the cardiac Regional ventilation-perfusion ratio in health and disease, and peripheral gas To explain the alveolar dead space, veno-arterial shunts, uneven Oxygen uptake and carbon dioxide output, pulmonary vascular resistance and Perfusion, use the alveolar gas equation, the alveolar ventilation equation, theįinal V ° A / Q ° - equation, and the law of mass balance in calculations. Pulmonary perfusion, and its measurements, describe the P O2- P CO2-diagram, hypo-and hyperventilation, pulmonary waterīalance, and mixed venous blood composition. ĭalton’s laws, factors of importance for the lung diffusion capacity and , and the ventilation-perfusion ratio ( V ° A / Q ° -ratio). Hypocapnia, hypoxia, respiratory quotient (RQ), ventilatory exchange ratio( R) Pathophysiology Equations Self-Assessment Answersĭiffusion, diffusion- and perfusion-limited gas exchange, hypercapnia, 
Study_ Objectives Principles Definitions Essentials Some apparatus dead space may actually reduce total dead space, as an ETT bypasses the majority of anatomical dead space of the patient (nasopharynx).ĭead space from the patient.New Human Physiology | Paulev-Zubieta 2nd Edition Chapter 14: Gas Exchange and Disorders Types of Dead Spaceĭead space from equipment, such as tubes ventilator circuitry. Glomerular Filtration and Tubular Functionĭead space is the proportion of minute ventilation which does not participate in gas exchange. Functional Anatomy and Control of Blood Flow
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