Before Bronchodilator Studies,inhaled $\beta$ -Adrenergic Agents Should Be Withheld for How Long?
A) 0

question 12

Multiple Choice

Before bronchodilator studies,inhaled $\beta$ -adrenergic agents should be withheld for how long?

• A) 0.5 to 1.5 hours unless corticosteroids are being used
• B) 4 to 12 hours for regular or long-acting preparations
• C) 24 hours for most inhalers
• D) 24 to 48 hours

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