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학습 자료 둘러보기 →The highest priority for suspected carbon monoxide poisoning is immediate administration of 100% oxygen via a non-rebreather mask. This creates a high oxygen partial pressure gradient to displace CO from hemoglobin, reducing the half-life of carboxyhemoglobin from hours to minutes.
A key clinical pitfall is that pulse oximetry cannot distinguish carboxyhemoglobin from oxyhemoglobin. A normal SpO2 reading, such as 99%, is falsely reassuring and masks severe tissue hypoxia.
Do not delay oxygen therapy for diagnostic procedures like ABG analysis or a complete neurological exam. Treat the patient's hypoxia first, as altered mental status is a direct consequence of cellular asphyxiation.
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