Intervention
NRS
The clinical weaning protocol involved a daily evaluation of weaning readiness up to the time of extubation, and the readiness was determined on the basis of the following criteria: recovery from the precipitating illness; respiratory measures of PaOAfter undergoing extubation, each patient was randomly assigned to the HFNC and NIPPV groups (in a 1:1 ratio) and received noninvasive respiratory support (NRS) administered using their assigned method. Randomization was achieved through the use of a website (