, and rescue postextubation NIV (r-NIV). The need for intubation was considered to be NIV failure. RESULTS: One hundred fifty-one episodes of NIV were included in the study, with 65% of patients having bronchiolitis. e-NIV was most frequently used (48%) (i-NIV 44%, r-NIV 8%), and the failure rate, 27% in total, was highest in the i-NIV group (37%) (e-NIV 18%, r-NIV 25%). Case patients with successful outcomes had shorter PICU stays (8.5 vs 13 d, P ‫؍‬ .001) and hospital stays (17 vs 23 d, P ‫؍‬ .03) stays. The NT needed to be changed for another interface in only 5 case patients, few complications (4 of 151 patients) were observed, and mortality (2 of 151 patients) was unrelated to NIV. CONCLUSIONS: Use of the NT showed 73% effectiveness, with few complications. The effectiveness was higher in e-NIV than i-NIV.