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MediumRespiratory MedicineAcute asthma exacerbationukmlamrcgp aktpanemrcem sbaprescribing safety assessment

A 23-year-old man presents with acute shortness of breath and wheeze at rest. PEF is 180 L/min (predicted 500). He speaks in short phrases, RR 30/min, SpO₂ 93% on air, HR 120 bpm. Which immediate treatment is essential in primary care before transfer?

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