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- Göran Hedenstierna and Lennart Edmark.
- Department of Medical Sciences, Clinical Physiology, Uppsala University Hospital, SE-751 85 Uppsala, Sweden. Electronic address: goran.hedenstierna@medsci.uu.se.
- Best Pract Res Clin Anaesthesiol. 2015 Sep 1; 29 (3): 273-84.
AbstractMost anesthetics cause a loss of muscle tone that is accompanied by a fall in the resting lung volume. The lowered lung volume promotes cyclic (tidal) or continuous airway closure. High inspired oxygen fractions cause rapid absorption of gas behind closed airways, resulting in atelectasis. This chapter deals with these mechanisms in more detail, and it addresses possible measures to keep the lung open with the use of recruitment maneuvers, continuous and/or end-expiratory positive pressure, as well as the interaction with different oxygen concentrations. The effects on ventilation/perfusion matching and pulmonary gas exchange are also discussed. Copyright © 2015 Elsevier Ltd. All rights reserved.
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