Efficacy of HFNC Combined With Sequential NIV in Patients With COPD Complicated With Type II Respiratory Failure

"The control group was treated with NIV routine treatment. During non-invasive ventilation, patients in both the intervention group and the conventional group will receive NIV through a full mask or nasal mask using any of the existing ventilators in the hospital. Usually, the ventilator was set to the pressure support ventilation mode, and the inspiratory pressure was adjusted to the maximum tolerance to obtain the ideal body weight of 6 \~ 8mL / kg of exhaled tidal volume, and the PEEP was set at 3 \~ 5cmH2O. FiO2 in both groups was set to maintain 88% -92% peripheral blood oxygen saturation.~The study group was treated with nasal high-flow oxygen therapy combined with sequential non-invasive ventilation. Patients will receive high-flow oxygen therapy ventilator during the day and in the morning and evening awake time (manufacturer: Hunan Mingkang Zhongjin Medical Technology Co., Ltd., registration number: Xiangji Zhuzhun 20192080049, model: OH60A) treatment. At night (from 10 p.m. to 6"

Usually, the ventilator was set to the pressure support ventilation mode, and the inspiratory pressure was adjusted to the maximum tolerance to obtain the ideal body weight of 6 \~ 8mL / kg of exhaled tidal volume, and the PEEP was set at 3 \~ 5cmH2O. FiO2 in both groups was set to maintain 88% -92% peripheral blood oxygen saturation.