Abstract
(Int J Obstet Anesth. 2021;45:17–20) To prevent apnea and hypoxemia in pregnant women undergoing rapid sequence induction of general anesthesia, preoxygenation to an end-tidal oxygen fraction (FET.O2) of ≥90% is recommended. Preoxygenation is typically carried out using a tight-fitting facemask with 100% inspired oxygen fraction (FiO2) at a flow rate of 10 L/min, with 3 to 5 minutes of tidal breathing. As obstetrical intubation often requires prompt induction, alternative preoxygenation methods are being explored.
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