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Respiratory Physiology 

Respiratory Physiology
Respiratory Physiology

Marie-Francoise Doursout

, Shruti Deshpande

, and George W. Williams

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date: 19 September 2020

The basic knowledge of physiology is important for an anesthesiologist to provide a safe anesthetic. The type of anesthesia, positioning of patients, and anesthetic drugs used by anesthesiologists have direct or indirect effects on respiratory physiology, thus anesthesiologists manipulate respiratory physiology very often. The chapter reviews fundamental concepts regarding lung physiology that will be helpful to understand the effects of anesthetics on the lung functions and physiology. The topics discussed in the chapter include respiratory and nonrespiratory functions of the lung, static and dynamic lung volumes, lung mechanics, distribution of ventilation and perfusion, ventilation perfusion ratios, diffusion of gases, alveolar ventilation, dead space ventilation, apneic ventilation, and diffusion hypoxia.

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