Electrolyte Imbalances · NCLEX Exam

Which ECG change is most likely in a patient with serum potassium of 6.2 mEq/L?

  1. U waves
  2. Flattened T waves
  3. Peaked T waves
  4. Wide QRS and absent P waves
Show answer and explanation

Correct answer: Peaked T waves

Hyperkalemia typically causes peaked (tented) T waves early, with progression to wide QRS if severe; U waves and flattened T waves are more hypokalemia.

Difficulty: Medium Question 2 of 20

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