Bilevel Noninvasive Ventilation in Infants With Bronchiolitis Presenting With Apnea

Inclusion Criteria: * Children born at gestational age \> 36 weeks gestation * Ventilated in Non Invasive Ventilation (NIV) for acute bronchiolitis (clinical criteria of the American Academy of Pediatrics) * Having presented at least 1 apnea objectified by the parents or by a health care professional, as previously described (1), with one or more of the following characteristics: 1/Associated with bradycardia \< 80 / min, 2/Associated with desaturation \< 85% or 3/Duration more than 10 seconds * Informed consent signed by at least one of the two parents + oral agreement from the second parent before the intervention of the study (2nd signature to be collected as soon as possible) Exclusion Criteria: * With chronic respiratory insufficiency requiring home ventilation (NIV or under long-term oxygen therapy, initiated at least 14 days before the start of the study) * Ventilated in NIV for more than 48 hours before inclusion * Hemodynamically significant cardiac disease, primary ENT or pulmonary pathology (malformative or genetic) or neuromuscular pathology * Presenting a contraindication of a gastric tube (trauma or recent surgery concerning the cervical, pharyngeal or esophageal regions, severe coagulation disorders) * Patient not affiliated to health care insurance