Secondary outcome
HFNC failure was associated with higher mWCAS score at H1 (p<0.01) and lower decrease in EDIN scale during the first hour of HFNC delivery (p = 0.02) (Table 1). However, none of the physiological variables collected at H0 and H1 and their changes during the first hour of HFNC delivery were predictive of HFNC failure, according to their respective AUC (Table 2).