Measurement of static and dynamic compliance during mechanical ventilation. A tidal volume is delivered, causing a peak in airway pressure; dynamic compliance.

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Presentation transcript:

Measurement of static and dynamic compliance during mechanical ventilation. A tidal volume is delivered, causing a peak in airway pressure; dynamic compliance is calculated at the peak inspiratory pressure (PIP). A short pause is applied before expiration to eliminate airway pressure caused by gas flow, and airway pressure decreases to a plateau (PPLAT). Static compliance is calculated during the plateau. A. Normal response. B. Low lung compliance causes a global increase in airway pressure and a decrease in both static and dynamic compliance. C. High airway resistance increases peak airway pressure but does not change the plateau pressure; dynamic compliance is decreased but static compliance is unchanged. Source: Pulmonary Physiology, Medical Physiology: The Big Picture Citation: Kibble JD, Halsey CR. Medical Physiology: The Big Picture; 2015 Available at: http://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/1291/p9780071485678-ch005_f013.png&sec=75576851&BookID=1291&ChapterSecID=75576764&imagename= Accessed: January 03, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved