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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