Critical Care Nursing Questions and Answers PDF Related

Review Critical Care Nursing Questions and Answers PDF related questions and content

A 65-year-old patient admitted to the progressive care unit with a diagnosis of community-acquired pneumonia, has a history of chronic obstructive pulmonary disease and diabetes. A set of arterial blood gases obtained on admissiaobnir bw.coitmh/oteustt supplemental oxygen shows pH 7.35; PaCO 55 mm Hg; bicarbonate 30 mEq/L ; PaO 65 mm Hg. These blood 2 2 gases reflect what condition?

  • A. Hypoxemia and compensated metabolic alkalosis.
  • B. Hypoxemia and compensated respiratory acidosis.
  • C. Normal oxygenation and partly compensated metaboli c alkalosis.
  • D. Normal oxygenation and uncompensated respiratory acidosis.
Correct Answer: B

Rationale: The correct answer is B: Hypoxemia and compensated respiratory acidosis. The patient's pH is within normal range (7.35), indicating compensation. The elevated PaCO2 (55 mm Hg) indicates respiratory acidosis due to inadequate ventilation, likely from COPD. The low PaO2 (65 mm Hg) indicates hypoxemia, common in pneumonia. The normal bicarbonate level (30 mEq/L) suggests metabolic compensation for respiratory acidosis. Choice A is incorrect as there is no metabolic alkalosis present. Choice C is incorrect as the patient has hypoxemia. Choice D is incorrect as the patient is showing compensated respiratory acidosis, not uncompensated.