A laboring client receiving IV magnesium sulfate for severe … | MyMerci
Adverse Effects/Contraindications/Interactions PPT
Question

A laboring client receiving IV magnesium sulfate for severe preeclampsia becomes confused, with deep tendon reflexes absent and respirations of 10/min. Which is the priority nursing action?

Explanation
Correct (2): Absent DTRs, RR 7-10 mEq/L). Priority: STOP the infusion, administer calcium gluconate 1 g IV over 3 minutes as the antidote, support airway/breathing, notify provider. Continue to monitor reflexes, RR, urine output, and serum magnesium. (1) More magnesium worsens toxicity. (3) Naloxone reverses opioids. (4) Oxytocin worsens BP and is contraindicated in severe preeclampsia management without specific indication.

In-depth explanation

Memory Tip Magnesium toxicity progression: DTRs lost (8-10) → RR depressed → cardiac arrest. Antidote = calcium gluconate. CPG Therapeutic level for preeclampsia: 4-7 mEq/L (4.8-9.6 mg/dL); monitor q1-2h DTRs, RR, urine output ≥30 mL/hr.

Clinical scenario

Scenario 32-year-old G2P1 at 36 weeks with severe preeclampsia on magnesium sulfate 2 g/hr IV. New findings: confusion, absent DTRs, RR 10/min, SpO2 92%.

Key concepts

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