 RESULTS: 160 infants were assessed for eligibility 149 infants were randomized. Finally 75 infants in Group I nasal prong and 74 in Group II nasal mask were analyzed. Mean gestational ages were 29.31.6 vs 29.12.0 weeks p0.55 and birth weights were 1225257 vs. 1282312 grams p0.22 respectively in Group I and Group II. The frequency of NCPAP failure within 24 hours of life was higher in Group I compared to Group 2 respectively 8, 0 , p0.09 but difference was not significant. The outcomes of BPD and death rates did not differ among the groups Group I 9.3 vs. Group II 9.4 ; p0.96. 