A nurse is monitoring a client who has acute kidney injury. Which of the following laboratory findings should the nurse expect?
Hypercalcemia
Elevated BUN
Metabolic alkalosis
Hypokalemia
The Correct Answer is B
A. Hypercalcemia: AKI is typically associated with hypocalcemia because the kidneys fail to convert vitamin D to its active form, reducing calcium absorption.
B. Elevated BUN: AKI leads to impaired renal filtration, causing elevated blood urea nitrogen (BUN) and creatinine levels due to the accumulation of nitrogenous waste.
C. Metabolic alkalosis: AKI usually causes metabolic acidosis, not alkalosis, due to the accumulation of acids (e.g., lactic acid, uremic toxins).
D. Hypokalemia: AKI commonly leads to hyperkalemia due to reduced potassium excretion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. ST depression: ST depression is associated with hypokalemia or ischemia.
B. Tall peaked T waves: Hyperkalemia (K+ > 5.0 mEq/L) causes tall, peaked T waves due to abnormal repolarization. Severe hyperkalemia (>6.5 mEq/L) can lead to cardiac arrest.
C. Prolonged ST segment: Not a characteristic of hyperkalemia.
D. Prominent U wave: A U wave is seen in hypokalemia, not hyperkalemia.
Correct Answer is D
Explanation
A. Respiratory Alkalosis: Alkalosis results from hyperventilation, which is not expected with thoracic trauma.
B. Metabolic Acidosis: Metabolic acidosis occurs due to renal failure, lactic acidosis, or diarrhea, not thoracic trauma.
C. Metabolic Alkalosis: Alkalosis can result from vomiting or excessive bicarbonate intake, not respiratory failure.
D. Respiratory Acidosis: Severe thoracic trauma can impair lung expansion, leading to hypoventilation and CO₂ retention, causing respiratory acidosis.
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