Pharmacological and Parenteral TherapiesQuestion 1117 of 2368
A client in preterm labor is receiving magnesium sulfate. Which finding should alert the nurse to magnesium toxicity?
- Increased muscle tone with rapid breathing
- Muscle weakness with slowed breathing
- Flushing with a headache
- Increased energy with a rapid heart rate
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Correct answer: Muscle weakness with slowed breathing
Magnesium is a CNS depressant, and toxicity causes muscle weakness that can progress to respiratory depression.
Source: Nursing Health Promotion (Open RN, Chippewa Valley Technical College, 2025), Labor & Delivery Care: Magnesium Sulfate. Licensed under CC BY 4.0.
Practice the topic "Pharmacological and Parenteral Therapies"Questions last reviewed: 18 October 2026