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NCLEX-RN

Category - Reduction of Risk

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A nurse reviews the laboratory report of a client revealing a serum potassium level of 5.3 mEq/L. On electrocardiogram, which finding is consistent with the laboratory result?

Inverted T wave
Widened QRS complex
Prominent U wave
Shallow T wave

Explanation

Answer - B - A serum potassium level of 5.3 mEq/L indicates hyperkalemia. On electrocardiogram, widened flat P waves, tall peaked T waves, prolonged PR interval, and widened QRS complex are the changes associated with hyperkalemia.

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