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Hypermagnesemia — NCLEX Cheat Sheet

Mg²⁺ > 2.5 mEq/L
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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-07-11 🏷️ Physiological Adaptation 🔖 Free to read, print, and share
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Use this quick-reference guide to spot, treat, and prevent Hypermagnesemia on the NCLEX. Keep it handy during review and on exam day!

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Signs

What to look for
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Report

Notify / act now
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Do

Nursing actions
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Causes

Why it happens
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Quick Tip

High magnesium depresses neuromuscular transmission, causing diminished or absent deep tendon reflexes, lethargy, and drowsiness.

📖 Related Topics

HypokalemiaHyperkalemiaHyponatremiaHeart Failure
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