What is the most critical information the nurse should gather for a client with severe preeclampsia receiving magnesium sulfate?

When managing a client with severe preeclampsia who is receiving magnesium sulfate, it is essential to closely monitor the respiratory rate. Magnesium sulfate is used both to control seizures and as a neuroprotective agent for the fetus. However, it has the potential to cause respiratory depression, particularly when given at therapeutic or high doses.

Monitoring the respiratory rate every hour allows for the early detection of any adverse effects associated with magnesium sulfate, ensuring timely intervention if respiratory function declines. This vigilance is crucial, as respiratory depression can lead to serious complications if not addressed quickly.

While urinary output, deep tendon reflexes, and blood pressure are also significant parameters to monitor in this scenario, they do not hold the same immediate urgency concerning potential life-threatening effects related to magnesium sulfate. Urinary output is vital for assessing kidney function and magnesium clearance, deep tendon reflexes are important for signs of magnesium toxicity, and blood pressure monitoring is essential for managing preeclampsia. Nonetheless, ensuring adequate respiratory function takes precedence in this context.