High-flow humidified nasal preoxygenation in pregnant women: a prospective observational study
PCF Tan, OJ Millay, L Leeton, AT Dennis
BRITISH JOURNAL OF ANAESTHESIA | ELSEVIER SCI LTD | Published : 2019
BACKGROUND: Obstetric airway guidelines recommend preoxygenation in preparation for general anaesthesia to achieve end-tidal oxygen concentrations (etO2) of ≥90%, and mention the potential use of high-flow humidified nasal oxygen (HFNO). We investigated the new HFNO technique (Optiflow™) in term pregnant women. METHODS: Seventy-three term participants underwent a 3 min HFNO protocol (30 L min-1 for 30 s, and then 50 L min-1 for 150 s). The etO2 was assessed for the first four breaths after simulated preoxygenation. The primary outcome was the proportion who achieved etO2 ≥90% for the first expired breath. The secondary outcomes were the proportion who achieved etO2 ≥80%; fetal heart rate bef..View full abstract
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Awarded by National Health and Medical Research Council of Australia (NHMRC) (NHMRC ECF Health Professional Fellowship)
No funding was received for this work however A.T.D. receives fellowship funding from the National Health and Medical Research Council of Australia (NHMRC) (NHMRC ECF Health Professional Fellowship APP1108598).