Automatic Oxygen Administration During the Respiratory Distress in Infants and Children (Infant-FreeO2)

Exclusion Criteria

• •Necessity of an oxygen flow exceeds 4 L / min to maintain a SpO2 higher than 92%
• •Criteria of gravity justifying immediately a different technique of ventilatory support:
• •* Disturbance of consciousness with a Glasgow Coma Score ≤ 12
• •* Hemodynamic instability (MBP \< - 2 DS or need for vasopressors)
• •* Cardiac or respiratory arrest
• •* pH \< 7.35 and PaCO2 \> 55 mm Hg
• •* Necessity of a urgent surgery
• •* Age \< 1 month
• •* Respiratory rate \> 80 b/min (1 month-2 years old), \> 40 b/min (2 - 10 years old) \> 30b/min (\> 10 years old) ou \< 10 b/min