What are the limitations of heliox for the treatment of status asthmaticus?

Updated: Jun 17, 2020
  • Author: Constantine K Saadeh, MD; Chief Editor: John J Oppenheimer, MD  more...
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Heliox loses most of its clinical utility when the FiO2 is greater than 40%, reducing the percentage of helium to less than 60%. Therefore, the limitation to the use of heliox is the amount of supplemental oxygen the patient requires to maintain adequate oxygen saturation.

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