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There is lots / of / evidence / that / using / a / bougie will increase your intubation success rate, compared to a styletted endotracheal tube. This is because the bougie is much smaller and easier to maneuver than an ETT, and does not block your view of the target at the last moment, as is often the case with a styletted tube. The Coudé tip allows operators to successfully intubate grade 3, epiglottis-only views, which means if you are practiced with the bougie and can get a view of the epiglottis, you will be able to intubate.
This 4-minute video discusses the conventional floppy vs. newer malleable bougies and presents a case where molding a malleable bougie during laryngoscopy turned what could have been a very difficult airway with limited mouth opening into straightforward procedure, even for a junior operator.