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Aim: Prediction of length of stay (LOS) among preterm neonates is important for counselling of parents and for assessing neonatal intensive care unit (NICU) census and economic burden. The aim of this study is to evaluate perinatal and postnatal factors that influence LOS in preterm infants (25-33 weeks of gestation) admitted to participating NICUs of Indian National Neonatal Collaborative (INNC). Methods: From the INNC database, the data which were prospectively entered using uniformed pre-defined criteria were analysed. Results: A total of 3095 infants were included from 12 centres. Every week decrease in gestation increased LOS by 9 days.

Objective To compare the level of continuous positive airway pressure (CPAP) delivered by three different CPAP delivery interfaces (RAM cannula system, Hudson prongs, and nasal mask) in preterm neonates with respiratory distress. Methods Preterm neonates with gestation between 28 weeks and 34 weeks and birth weight more than or equal to 1000 g and requiring nasal CPAP for respiratory distress were eligible for the study. During the study period, consecutive infants requiring CPAP were started on Hudson prongs or RAM cannula or nasal mask in that order. We measured the mean oropharyngeal pressure, which approximates the applied CPAP level. Oropharyngeal pressures in the recruited neonates were measured between 24 and 48 hours of postnatal age, when stable and in sleep or quiet awake state. Comparison of the delivered oropharyngeal pressures when on three different nasal interfaces at the same set flow rate and at set CPAP of 5 cm or 6 cm of H2O was the primary outcome. Results Data was analyzed from 30 neonates in each group. We found that measured oropharyngeal pressures were less than set CPAP level in all three studied interfaces. Maximum drop in oropharyngeal pressure was observed with use of RAM cannula with measured oropharyngeal pressures being 1.1 and 1.2 cm H2O less than set CPAP of 5 and 6 cm H2O respectively. Pharyngeal pressure best correlated to set CPAP level with the use of nasal mask. Conclusion None of the nasal interfaces delivered oropharyngeal pressure equivalent to the set CPAP. However, nasal mask delivered oropharyngeal pressure best matched to the set CPAP.