American Association of Critical-Care Nurses (AACN) Certification Practice Test

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Prepare for the AACN Certification Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

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What is the normal range for magnesium levels?

1.0-2.0
1.5-2.5
2.0-3.0
1.5-3.5

The correct answer is: 1.5-2.5

The normal range for magnesium levels in the bloodstream is typically between 1.5 mg/dL and 2.5 mg/dL. This range is crucial because magnesium plays a vital role in various physiological functions, including muscle and nerve function, blood glucose control, and blood pressure regulation. Values below 1.5 mg/dL may indicate hypomagnesemia, which can lead to muscle cramps, fatigue, and arrhythmias, while values above 2.5 mg/dL suggest hypermagnesemia, which can cause symptoms such as nausea, vomiting, and cardiac disturbances. Understanding the correct range not only assists healthcare professionals in diagnosing and managing potential imbalances but also emphasizes the importance of magnesium in overall health. Regular monitoring of magnesium levels is essential in patients at risk for electrolytic imbalances, particularly those with gastrointestinal or renal issues, as they may have altered absorption or excretion of this key mineral.