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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: Preoxygenation with standard facemask combining apnoeic oxygenation using high flow nasal cannula versuss standard facemask alone in patients with and without obesity: the OPTIMASK international study

Fig. 2

Primary outcome: end-tidal oxygen (EtO2) levels within 2 min after intubation in the facemask alone group and the facemask combined with HFNO group, and according to obesity status A. In overall patients B. In patients without obesity C. In patients with obesity EtO2 End-tidal oxygen

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