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Ventilation/Perfusion Ratios

Ventilation/Perfusion Ratios. Fig. 34-21 Ganong. Autoregulation of Ventilation/Perfusion Ratios. Fig. 22.22. Factors Affecting Diffusion. D  PxA S_ d  MW D = diffusion rate P = diffusion gradient A = surface area d = distance

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Ventilation/Perfusion Ratios

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  1. Ventilation/Perfusion Ratios Fig. 34-21 Ganong

  2. Autoregulation of Ventilation/Perfusion Ratios Fig. 22.22

  3. Factors Affecting Diffusion • D  PxA S_ d MW D = diffusion rate P = diffusion gradient A = surface area d = distance S/MW = diffusion coefficient 20x greater for CO2 than for O2

  4. Pulmonary Edema Guyton Medical Physiology cf. Fig. 22.21 D  PxA S_ d MW

  5. Chronic Obstructive Pulmonary Disease(COPD)Chronic Obstructive Lung Disease (COLD) Harrison’s Principles of Internal Medicine

  6. Emphysema D  PxA S_ d MW cf. Fig. 22.21 Guyton, Medical Physiology Moffett, Moffett and Schauf, Human Physiology

  7. Hemoglobin Fig. 18.5 _ Fig. 22.25 Fig. 22.24

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