What is the role of spirometry in the evaluation of status asthmaticus?

Updated: Jun 17, 2020
  • Author: Constantine K Saadeh, MD; Chief Editor: John J Oppenheimer, MD  more...
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Spirometry can be employed to monitor the progression of asthma. As the results indicate improvement, treatment may be adjusted accordingly. If a portable spirometry unit is not available, a PEF rate of 20% or less of the predicted value (ie, usually < 100 L/min) suggests severe airflow obstruction and impending respiratory failure.

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