Ventilation-Perfusion Matching MCQ — NEET PG Practice Question | NEETPGAI
Ventilation-Perfusion Matching
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heart-pulse Physiology
A 58-year-old man with COPD presents with chronic hypoxemia. Arterial blood gas shows PaO₂ 55 mmHg, PaCO₂ 65 mmHg, and pH 7.32. Chest X-ray reveals emphysematous changes. Which feature best distinguishes a low ventilation-perfusion (V/Q) unit from a shunt in this patient?
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