NCLEX RN Pediatric Questions Related

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A patient is admitted who has had severe vomiting for 24 hours. She states that she is exhausted and weak. The results of an admitting ECG show flat T waves and ST segment depression. Choose the most likely potassium (K ) value for this patient.

  • A. 4.0mEq/L
  • B. 2.0mEq/L
  • C. 8.0mEq/L
  • D. 2.6mEq/L
Correct Answer: B

Rationale: The patient is displaying signs of hypokalemia (low potassium levels) due to severe vomiting. Symptoms of hypokalemia can include weakness, fatigue, and ECG changes such as flat T waves and ST segment depression. The potassium level that is most likely associated with these symptoms is 2.0mEq/L. Severe vomiting can lead to significant loss of potassium from the body, causing these abnormalities. It is important to address and correct the potassium imbalance to prevent further complications.