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학습 자료 둘러보기 →An SpO₂ below 90% on room air defines critical hypoxemia requiring immediate intervention. The first action is to apply supplemental oxygen to target an SpO₂ of 92-96%.
Assess for signs of increased work of breathing: use of accessory muscles, nasal flaring, intercostal retractions, and tachypnea. These indicate impending respiratory muscle fatigue and possible failure.
Do not delay oxygen administration to obtain an ABG or chest X-ray. In the ABC framework, breathing interventions take precedence over diagnostic procedures when a patient is acutely hypoxemic.
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