Up to 40% of tracheal intubations are complicated by hypoxemia, which increases patients’ risks for cardiac arrest and death. Bag-mask ventilation (BVM) is often used to prevent hypoxemia during intubation. This technique however, may increase the patient’s chance of aspiration. The risk of gastric or oropharyngeal aspiration versus the benefit of preventing hypoxemia has been debated for over many years and thus the guidelines for oxygenation during tracheal intubation remains controversial.
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