RN Exam Practice
Pharmacological and Parenteral TherapiesQuestion 1390 of 2368

A client in preterm labor receiving magnesium sulfate has the following findings. Which finding requires the nurse to withhold the dose?

  1. Urine output of 45 mL per hour
  2. Warm, flushed skin
  3. Blood pressure of 118/72 mmHg
  4. Respiratory rate of 14 breaths per minute
Show answer

Correct answer: Respiratory rate of 14 breaths per minute

Dosage is withheld if respirations are under 16 breaths per minute or urine output is under 30 mL per hour. Flushing is a common side effect.

Source: Nursing Health Promotion (Open RN, Chippewa Valley Technical College, 2025), High-risk Perinatal Client Care: Preterm Labor. Licensed under CC BY 4.0.

Practice the topic "Pharmacological and Parenteral Therapies"

Questions last reviewed: 18 October 2026