A client is in a motor vehicle accident with a severe kidney injury and develops acute renal failure. Which acid-base imbalance is most likely to develop?
Respiratory Acidosis
Metabolic Alkalosis
Respiratory Alkalosis
Metabolic acidosis
The Correct Answer is D
A. Respiratory Acidosis: Respiratory acidosis results from inadequate ventilation leading to CO₂ retention, which is unrelated to kidney failure.
B. Metabolic Alkalosis: Metabolic alkalosis occurs due to excessive loss of acids (e.g., vomiting) or excess bicarbonate intake. Acute renal failure causes acid retention, not loss.
C. Respiratory Alkalosis: Respiratory alkalosis is caused by hyperventilation and excessive CO₂ loss, not renal dysfunction.
D. Metabolic acidosis: The kidneys play a vital role in acid-base balance by excreting hydrogen ions and reabsorbing bicarbonate. Acute renal failure impairs these functions, leading to acid retention and metabolic acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is B
Explanation
A. Respiratory Alkalosis: Would have low PaCO2 (<35 mmHg), not high.
B. Partially Compensated Metabolic Alkalosis: The pH is high (alkalosis), and the HCO3 is elevated, which indicates metabolic alkalosis. The PaCO2 is high, meaning the lungs are attempting to compensate by retaining CO₂ to lower the pH. Because the pH is still abnormal, this is partial compensation.
C. Metabolic Acidosis: Would have low pH and low HCO3 (<22 mEq/L).
D. Fully Compensated Respiratory Acidosis: The primary problem is metabolic, not respiratory.
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