A client with emphysema has a morning theophylline level of \(25 \mathrm{mcg} / \mathrm{mL}\). The nurse should give priority to: A. Continuing the medication as prescribed B. Notifying the physician of the drug level C. Requesting an additional bronchodilator D. Asking the client about changes in smoking pattern

Theophylline is a bronchodilator medication that is used to treat respiratory diseases such as asthma and emphysema. The optimal therapeutic range for theophylline is generally considered to be between $5 \mathrm{mcg} / \mathrm{mL}\( and \)15 \mathrm{mcg} / \mathrm{mL}\(. Levels higher than this range may indicate the risk of side effects and toxicity. In this given case, the level is \)25 \mathrm{mcg} / \mathrm{mL}$, which is higher than the recommended range, indicative of the potential risk to the patient.

Now, let's evaluate each of the given options: A. Continuing the medication as prescribed - Since the theophylline level is higher than the recommended range, continuing the medication as prescribed might not be the best option. B. Notifying the physician of the drug level - Notifying the physician about the high theophylline level is a priority as they can make an informed decision about the future course of action. C. Requesting an additional bronchodilator - Before requesting an additional bronchodilator, it is necessary to discuss the theophylline levels with the physician. This may not be the most appropriate action to take at this point. D. Asking the client about changes in smoking pattern - Although asking the client about their smoking pattern can provide valuable information, the priority should be to address the high theophylline level.

Based on this analysis, the best option for the nurse to give priority to is: B. Notifying the physician of the drug level This step ensures that the physician is aware of the high theophylline level and can make an informed decision about the client's medication and treatment plan.