Evaluation of lip pulling method efficacy for direct laryngoscopy: A prospective crossover clinical pilot trial

A lip pulling method is usually used to prevent lip or tooth injuries [1]. We previously suggested that this method may provide a better laryngoscopy [2]. We hypothesized that lip pulling could also improve laryngoscopy, since the lips sometimes impede sufficient laryngoscopy with the Macintosh laryngoscope (McL). To test our hypothesis, we conducted a prospective randomized crossover study to compare laryngoscopy with or without lip pulling. The primary outcome was the efficiency of laryngoscopy (Fig.

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