Weaning Protocol for High Flow Nasal Cannula Oxygen Therapy

Inclusion Criteria: * The patients applying high flow nasal cannula and satisfying the following weaning criteria. 1. Patient who has recovered from the underlying condition 2. No signs of respiratory distress like agitation, diaphoresis or anxiety 3. Arterial pH ≥ 7.35, SpO2 \> 90% on FiO2 ≤ 0.5 4. Respiratory rate ≤ 25/min, Heart rate ≤120/min, Systolic blood pressure ≥ 90mmHg Exclusion Criteria: * Severe hypercapnia (pH \<7.25) * Respiratory arrest requiring tracheal intubation * Cardiac arrest, acute coronary syndrome or life threatening arrhythmias * Failure of more than two organs * Recent trauma or burns of the neck and face * Non- cooperation * Pregnancy * Refusal of treatment