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 to the emergency department with acute dyspnea, SpO₂ 88% on room air, and PaO₂ 55 mmHg. Arterial blood gas shows pH 7.32, PaCO₂ 65 mmHg, HCO₃⁻ 32 mEq/L. Chest X-ray reveals hyperinflation but no focal consolidation. The clinical picture is consistent with acute-on-chronic hypoxemia due to ventilation-perfusion mismatch. What is the most appropriate immediate next step in management?
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