What is a key consideration for nurses monitoring patients on magnesium sulfate?

Monitoring urine output is essential for patients on magnesium sulfate because magnesium can have significant effects on renal function. Since magnesium sulfate is known to cause muscle relaxation, it can lead to decreased urinary output or, in more severe cases, renal failure. An adequate urine output is an important indicator of renal function and helps to ensure that the patient is properly excreting magnesium. If urine output is insufficient, there could be a risk of magnesium toxicity, which can lead to serious complications such as respiratory depression or cardiac issues.

In contrast, while adequate fluid intake, monitoring for excessive weight gain, and assessing fetal movements are relevant nursing considerations, they do not specifically focus on the direct effects of magnesium sulfate and its potential risks. Thus, ensuring adequate urine output is a proactive measure to prevent complications associated with magnesium sulfate therapy, making it a key priority for nurses in this context.