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. 2020 Aug 8;38(10):2160–2168. doi: 10.1016/j.ajem.2020.08.001

Fig. 4.

Fig. 4

Cognitive aids for use when managing unexpected difficulty when intubating a patient with coronavirus disease 2019. (a) Unexpected difficult tracheal intubation. (b) Cannot intubate, cannot oxygenate. (c) Vortex approach cognitive aid [23,67].

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