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Non-invasive ventilation initiation — SCE Acute Medicine MCQ

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ModerateProcedural Knowledge in Acute MedicineNon-invasive ventilation initiationSCE Acute Medicine

A 51-year-old woman presents with a procedure-related acute decision. Relevant history includes coagulation, imaging, respiratory physiology or procedural risk. On assessment, bedside findings determine whether the procedure is safe and urgent. Investigations show persistent COPD acidosis after initial therapy with pH 7.27 and PaCO2 8.8. What is the most appropriate next step in management?

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

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Correct answer: B — Start NIV in an appropriate monitored area

The key discriminator is that persistent COPD acidosis after initial therapy with pH 7.27 and PaCO2 8.8, which makes Start NIV in an appropriate monitored area the single best answer. Arrange routine outpatient follow-up is less appropriate because it does not address the dominant acute risk in the vignette; Give intravenous fluids with reassessment would fit a different presentation or later stage of care. Start broad-spectrum intravenous antibiotics and Start anticoagulation after assessing bleeding risk are suboptimal because they would either delay time-critical treatment or follow the wrong acute pathway. Teaching point: SCE-style acute medicine questions usually test prioritisation using physiology, timing and a guideline-defined threshold, rather than isolated factual recall.

Reference: BTS/ICS NIV Guideline