RecruitingDevice studyLaryngoscopy for Neonatal and Infant Airway Management wIth Supplemental Oxygen at Different Flow Rates (OPTIMISE-2)This study aims to investigate the optimal oxygen flow rate needed during tracheal intubation with the C-MAC video laryngoscope (Karl Storz, Tuttlingen, Germany) using Miller-blade or Macintosh-blade size No. 0 or No. 1 in the operating room or intensive care unit. The investigators hypothesize that the difference between low-flow and high-flow supplemental oxygen is negligible.