Gas Transport — O2 and CO2 MCQ — NEET PG Practice Question | NEETPGAI
Gas Transport — O2 and CO2
medium
heart-pulse Physiology
A 28-year-old woman with systemic lupus erythematosus presents to the emergency department with acute dyspnea and chest pain. Arterial blood gas analysis shows: pH 7.48, PaCO₂ 28 mmHg, PaO₂ 65 mmHg, HCO₃⁻ 21 mEq/L. Chest X-ray reveals bilateral interstitial infiltrates. Pulmonary function tests show a reduced diffusion capacity (DLCO 55% predicted). Which of the following best explains the mechanism of hypoxemia in this patient?
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