• Resuscitation · Mar 2002

    Use of heliox in critical upper airway obstruction. Physical and physiologic considerations in choosing the optimal helium:oxygen mix.

    • Anthony M H Ho, Peter W Dion, Manoj K Karmakar, David C Chung, and Beng A Tay.
    • Department of Anaesthesia and Intensive Care, Faculty of Medicine, Prince of Wales Hospital Shatin, The Chinese University of Hong Kong, NT, Shatin, Hong Kong. hoamh@hotmail.com
    • Resuscitation. 2002 Mar 1; 52 (3): 297-300.

    AbstractHeliox has a lower density than oxygen and nitrogen, and can improve ventilation rapidly in patients with critical upper airway obstruction. The choice of the best helium:oxygen ratio depends on whether the predominant problem is hypercarbia or hypoxia. In the former situation, 80% helium should be used, and in the latter, 100% oxygen is appropriate.

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