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LTOT Criteria Application — RACP Adult Medicine MCQ

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ModerateRespiratoryLTOT Criteria ApplicationRACP Adult Medicine

A 70-year-old man with COPD. Resting PaO₂ 56 mmHg on room air (2 measurements). No cor pulmonale or polycythaemia. Does he meet LTOT criteria?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — No – PaO₂ 56–59 without complications does NOT meet criteria

LTOT: PaO₂ ≤55 mmHg OR 56–59 with complications (cor pulmonale, polycythaemia Hct >55, oedema). PaO₂ 56 without complications = not yet eligible.

Reference: TSANZ – 2015; COPD-X – 2025