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학습 자료 둘러보기 →A PEFR persistently at 35% of personal best after 2 hours of continuous bronchodilators signals a life-threatening exacerbation. The combination of worsening hypoxemia, anxiety, and fatigue indicates failing compensatory mechanisms and impending ventilatory failure.
The priority is to prepare for definitive airway management. Delaying to administer more bronchodilators or systemic corticosteroids, which take hours to work, risks a crash intubation under emergency conditions with higher morbidity.
Do not mistake an increase in oxygen saturation from a higher flow rate for clinical improvement. It does not correct the underlying hypercapnia or increased work of breathing and may delay necessary ventilation.
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