PEF: peak expiratory flow; MDI: pressurized metered dose inhaler; SpO2: pulse oxygen saturation; DPI: dry powder inhaler; FABA: fast-acting beta agonist (eg, albuterol, formoterol-budesonide).
* Comorbid conditions that may complicate asthma exacerbation:ΒΆ Response category is generally based on the criterion with the most severe impairment.