High Flow Nasal Oxygen Therapy in Pediatric Hypercapnic Respiratory Failure During Perioperative Stage

Exclusion Criteria

• •1. Participation in a concurrent study that prohibits the use of HHFNC
• •2. Active air leak syndrome
• •3. Patients with abnormalities of the upper and lower airways; such as Pierre- Robin, Treacher-Collins, Goldenhar, choanal atresia or stenosis,
• •4. Patients with significant abdominal or respiratory malformations including tracheo-esophageal fistula, intestinal atresia, omphalocele, gastroschisis, and congenital diaphragmatic hernia
• •5. PaCO2\<50mmHg