While making rounds, the charge nurse notices that a young adult client with asthma who was admitted yesterday is sitting on the side of the bed and leaning over the bedside table. The client is currently receiving oxygen at 2 liters/minute via nasal cannula. The client is wheezing and is using pursed lip breathing. Which intervention should the nurse implement?

Choice A: Obtain a blood pressure reading before the client gets out of bed. This is the most important intervention, as it can prevent or detect orthostatic hypotension, which is a drop in blood pressure when changing position from lying to standing. Orthostatic hypotension can cause dizziness, fainting, or falls, and it can be caused by medications, dehydration, or cardiac problems.

Choice B: Monitor and record the client's urinary output every day. This is not the most important intervention, as it does not address the client's anxiety or adjustment issues. The urinary output should be monitored for signs of fluid balance, kidney function, or infection, but it is not a priority for this client.

Choice C: Provide the client with teaching regarding a cardiac diet. This is not the most important intervention, as it does not address the client's anxiety or adjustment issues. The cardiac diet should be taught to promote heart health, lower cholesterol, and reduce sodium intake, but it is not a priority for this client.

Choice D: Assess the client's vital signs every 4 hours when awake. This is not the most important intervention, as it does not address the client's anxiety or adjustment issues. The vital signs should be assessed for signs of infection, pain, or hemodynamic instability, but they are not a priority for this client.

Choice A: Assessing pupillary response to light hourly is not an intervention that the nurse should implement while administering dopamine, as this is not related to the effects or side effects of dopamine. This is a distractor choice.

Choice B: Initiating seizure precautions is not an intervention that the nurse should implement while administering dopamine, as this is not a common or expected complication of dopamine. This is another distractor choice.

Choice C: Monitoring serum potassium frequently is not an intervention that the nurse should implement while administering dopamine, as this is not affected by dopamine or hypotension. This is another distractor choice.

Choice D: Measuring urinary output every hour is an intervention that the nurse should implement while administering dopamine, as this can indicate the effectiveness of dopamine in improving renal perfusion and blood pressure. Therefore, this is the correct choice.