Most patients undergoing general anesthesia surgery establish endotracheal intubation. On the contrary, when patients with sepsis of multilobar pneumonia have developed hypoxemia (oxygen saturation ≤ 90%), despite the administration of high flow 100% oxygen, there will be an immediate risk of hypoxia of important tissues during endotracheal intubation. For patients without pulmonary lesions, if hemoglobin is sufficient, metabolic demand is low, and pulse oxygen saturation reaches 100% when inhaling indoor air, the risk of hypoxia saturation caused by intubation after preoxygenation is low. The major challenge for emergency physicians is to quickly intubate the trachea to ensure that the airway is unobstructed without severe hypoxia or aspiration. Desaturation to oxygen saturation below 70% will put patients at risk of arrhythmia, hemodynamic decompensation, hypoxic brain injury, and death. ![]() Maintaining hemoglobin oxygen saturation during airway management is very important for patient safety. The other surgery in which a wearable pulse oximeter can play an important role is tracheal intubation.
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