Fig. 3

Successful detection of observed events by event type. (E1) Increase in oxygen delivery method (such as nasal cannula to high flow nasal cannula or non-rebreather). (E2) Respiratory treatment (including albuterol, Atrovent, or racemic epinephrine). (E3) Initiation of BiPap or intubation/mechanical ventilation. (E4) Administration of naloxone or flumazenil. (E5) Desaturation—defined as pulse oximetry below 90% for greater than 2 min sustained. (E6) Hypercarbia—defined as PaCO2 (from ABG) > 50 mm Hg. (E7) Respiratory rate < 8 bpm. (E8) Administration of atropine or epinephrine at any dose (none observed)