The Efficiency of HHHFNC Between Unheated Oxygen Therapy in Difficult Weaning Patients After Extubation in RCC

Participants using of invasive ventilator more than 14 days, maybe considered transferred to the Respiratory Care Center(RCC), participants enrolled to this study and also written informed consent from participants or their family; After extubation, the difficult weaning patients were allocated to two treatment groups, and randomly assigned to Heated Humidified High-Flow Nasal Cannula or Noninvasive Ventilation devices.