The HFNC failure group was defined as the patient's upgrading of respiratory support to non-invasive ventilation, tracheal intubation or death within 48 hours, and the indicators of the HFNC failure group were analyzed.
The HFNC failure group was defined as the patient's respiratory support upgraded to non-invasive ventilation, trachea intestor, or death within 48 hours, and the indicators predicting the HFNC failure group were analyzed.
The hfnc failure group was defined as the patient's respiratory support upgraded to noninvasive ventilation, endotracheal intubation or death within 48 hours, and the indicators for predicting hfnc failure group were analyzed.<br>