Scott D. Weingart, MD, Richard M. Levitan, MD

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Presentation transcript:

Preoxygenation and Prevention of Desaturation During Emergency Airway Management Scott D. Weingart, MD, Richard M. Levitan, MD Annals of Emergency Medicine Volume 59, Issue 3, Pages 165-175.e1 (March 2012) DOI: 10.1016/j.annemergmed.2011.10.002 Copyright © 2011 American College of Emergency Physicians Terms and Conditions

Figure 1 Oxyhemoglobin dissociation curve demonstrates the SpO2 from various levels of PaO2. Risk categories are overlaid on the curve. Patients near an SpO2 of 90% are at risk for precipitous desaturation, as demonstrated by the shape of the curve. Annals of Emergency Medicine 2012 59, 165-175.e1DOI: (10.1016/j.annemergmed.2011.10.002) Copyright © 2011 American College of Emergency Physicians Terms and Conditions

Figure 2 A disposable PEEP valve. This inexpensive item is a strain gauge capable of PEEP settings from 5 to 20 cm H2O. When placed on the exhalation port of a bag-valve-mask device (inset), it allows the device to provide PEEP/CPAP when the patient is spontaneously breathing and during assisted ventilations. If combined with a nasal cannula set to 15 L/minute, it will provide CPAP even without ventilations. The generation of positive pressure is predicated on a tight mask seal. Annals of Emergency Medicine 2012 59, 165-175.e1DOI: (10.1016/j.annemergmed.2011.10.002) Copyright © 2011 American College of Emergency Physicians Terms and Conditions

Figure 3 Logistic flow of preoxygenation and prevention of desaturation. Annals of Emergency Medicine 2012 59, 165-175.e1DOI: (10.1016/j.annemergmed.2011.10.002) Copyright © 2011 American College of Emergency Physicians Terms and Conditions