The verbal performance of a written, pre-procedure checklist does not increase the lowest arterial oxygen saturation or lowest systolic blood pressure during endotracheal intubation of critically ill adults compared to usual care. The median lowest arterial oxygen saturation was 92% (IQR 79 – 98) in the checklist group versus 93% (IQR 84 – 100) with usual care (P = .34).

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