Nasopharyngeal Tube Effects on Breathing during Sedation for Dental Procedures: A Randomized Controlled Trial.

What We Already Know About This Topic: Dental procedures under sedation can cause hypoxic events and even death. However, the mechanism of such hypoxic events is not well understood.

What This Article Tells Us That Is New: Apnea and hypopnea occur frequently during dental procedures under sedation.