Arterial blood gas results are pH 7.28, PCO2 28 mm Hg, and HCO3- 13 mmol/L. Using Winter's estimate, expected …

Question

Arterial blood gas results are pH 7.28, PCO2 28 mm Hg, and HCO3- 13 mmol/L. Using Winter's estimate, expected PCO2 is approximately 1.5 × 13 + 8 = 27.5 ± 2 mm Hg. Which interpretation is best?

Accepted Answer

보기 1: Primary metabolic acidosis with appropriate respiratory compensation

The low pH and low bicarbonate identify primary metabolic acidosis. The measured PCO2 is within the expected compensatory range, so there is no laboratory evidence of an additional primary respiratory disorder.

Answer

보기 2: Primary respiratory acidosis with renal compensation

Answer

보기 3: Primary metabolic alkalosis with respiratory compensation

Answer

보기 4: Mixed respiratory alkalosis and metabolic alkalosis

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Arterial blood gas results are pH 7.28, PCO2 28 mm Hg, and HCO3- 13 mmol/L. Using Winter's estimate, expected PCO2 is approximately 1.5 × 13 + 8 = 27.5 ± 2 mm Hg. Which interpretation is best?

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