A nurse is collecting data from a client who has preeclampsia and is receiving magnesium sulfate via a continuous IV infusion. Which of the following findings should the nurse report to the provider?

A. 2+ deep tendon reflex: A reflex rating of 2+ is normal and indicates adequate neuromuscular function. In a client receiving magnesium sulfate, this suggests that magnesium levels are within the therapeutic range and are not causing toxicity. B. Facial flushing: Facial flushing is a common side effect of magnesium sulfate due to vasodilation. While uncomfortable, it is not dangerous and typically does not require intervention unless accompanied by other signs of toxicity. C. Respiratory rate 13/min: A respiratory rate above 12/min is generally considered within normal limits for adults. Magnesium toxicity becomes concerning when the respiratory rate drops below 12/min, indicating central nervous system depression. D. Urine output 20 mL/hr: Magnesium sulfate is excreted primarily by the kidneys, and low urine output (<30 mL/hr) increases the risk of magnesium accumulation and toxicity. Reporting this finding allows the provider to adjust the infusion rate or evaluate renal function to prevent serious complications.