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Fig. 4 | BMC Anesthesiology

Fig. 4

From: Comparison of the effectiveness of high-flow nasal oxygen vs. standard facemask oxygenation for pre- and apneic oxygenation during anesthesia induction: a systematic review and meta-analysis

Fig. 4

Forest plots of ETO2 in HFNO versus FMV after preoxygenation and intubation. Subgroup analysis shows the ETO2 after preoxygenation versus after intubation. CI indicates confidence interval; df, degrees of freedom; HFNO, hign flow anasal oxygen; FMV, facemask ventilation; IV, inverse variance; o2 oxygen; SD, standard deviation

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BMC Anesthesiology

ISSN: 1471-2253

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