A finding which indicates that the drug is producing a therapeutic effect is a respiratory rate of 22 breaths/minute.
What is a drug?
A drug can be defined as a type of chemical substance that is designed and developed to provide wellness and healing to a sick person.
In this scenario, we can infer and logically deduce that a finding which indicates that the drug "albuterol (proventil)" is producing a therapeutic (desired) effect is a respiratory rate of 22 breaths/minute because only fewer respirations are required to achieve oxygenation.
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