Premedication Trial for Tracheal Intubation of the NEOnate

Multicenter double blind randomized controlled trial comparing "atropine+propofol" vs "atropine+atracurium+sufentanil" as a premedication prior to endotracheal intubation of the neonate. Primary outcome: pulse oxymetry value \< 80% for more than 60 seconds. Secondary outcomes: number of attempts, duration of the procedure, changes in physiologic parameters, short- and long-term neurodevelopmental outcome. Hypothesis: "atropine + propofol" compared to "atropine+atracurium+sufentanil" will significantly reduce the frequency of severe hypoxemia.