A nurse is collecting data from a client who received levalbuterol 30 min ago. Which of the following findings should the nurse identify as a therapeutic effect of the medication?

The correct answer is B: Wheezing decreases. Levalbuterol is a bronchodilator used to treat bronchospasm in conditions like asthma. Its therapeutic effect includes relieving wheezing by dilating the airways, making breathing easier. Respiratory rate increasing (choice A) is not the therapeutic effect, as it could indicate distress. Heart rate increasing (choice C) can be a side effect of levalbuterol. Nausea decreasing (choice D) is not a typical therapeutic effect of this medication.