امرأة عمرها ٥٠ سنة في الطوارئ بألم صدري منذ ساعة، بدون ضيق نفس. التشبع ٩٧٪ على هواء الغرفة، والتنفس ١٦، والضغط ١٣٤/٨٠. الطبيب كتب أكسجين ٤ لتر بالأنف بشكل روتيني لكل مرضى ألم الصدر. ما التصرف الأنسب؟

A 50-year-old woman in the ED has had chest pain for an hour without breathlessness. SpO2 97% on room air, RR 16, BP 134/80. The doctor has ordered routine oxygen 4 L/min by nasal cannula for all chest pain clients. What is the most appropriate action?

1. Give it at once because oxygen protects the myocardium from ischaemia
2. Apply a 15 L non-rebreather mask to improve perfusion
3. Give oxygen only if the client asks for it
4. Clarify the order, because oxygen is usually given when SpO2 is below 90%

Answer: D) Clarify the order, because oxygen is usually given when SpO2 is below 90%. Current guidance gives oxygen in ACS when saturation is low (often below 90%). Unneeded oxygen gives no benefit and may harm, so the order is clarified.