What assessment finding should the nurse anticipate for a patient receiving magnesium sulfate during labor?

Magnesium sulfate is commonly used during labor, particularly to manage conditions such as preeclampsia or to provide neuroprotection for the fetus. One of the important physiological effects of magnesium sulfate is its muscle relaxant properties, which can lead to a decrease in neuromuscular function. As a result, decreased reflexes are a notable assessment finding in patients receiving this medication.

The body may respond to magnesium sulfate with sedation and relaxation, which includes reduced deep tendon reflexes. This is a crucial observation for the nurse, particularly because excessive magnesium levels can lead to toxicity, where decreased reflexes can signal worsening levels of the drug.

While increased urinary output, high blood pressure, and elevated heart rate may be assessed in various conditions during labor, they are not typical effects associated with magnesium sulfate administration. In fact, magnesium sulfate can lead to decreased blood pressure and bradycardia due to its vasodilatory effects and central nervous system depressant properties. An understanding of these pharmacological effects is essential for the nurse to monitor and ensure patient safety during the administration of magnesium sulfate.