Abstract
            Background: Neonatal acute respiratory distress syndrome (NARDS) is an important cause of hypoxemic respiratory failure. This  study aimed to investigate the short-term effects of endotracheal surfactant and budesonide combination therapy on NARDS  secondary to late-onset neonatal sepsis (LONS).  
  Methods: This was a retrospective, cross-sectional, and observational study. Newborns with NARDS due to LONS who received  endotracheal surfactant and budesonide combination therapy between August 2022 and September 2023 were included in this  study. Oxygenation status before endotracheal surfactant and budesonide treatment were compared with the values obtained two  hours after treatment.  
  Results: Among 20 neonates, 10 (50%) were diagnosed with severe NARDS, and 10 (50%) were diagnosed with moderate NARDS.  The mean corrected gestational age was 33.3±2.9 w when endotracheal surfactant and budesonide were administered to the  neonates. The need for the fraction of inspired oxygen (0.75 [0.57-1.00]% vs. 0.55 [0.44-0.80]%; mean difference [MD]: 17.50%,  95% confidence interval [CI]: 14.99 to 22.50) and oxygen saturation index (OSI; 8.03 [4.98-13.94] vs. 4.71 [4.11-8.93]; MD: 2.23,  95% CI: 1.22 to 3.24) decreased (P=0.001 and P<0.001, respectively) after endotracheal surfactant and budesonide treatment.  However, preductal oxygen saturation (SpO2  ; 93 [91-94]% vs. 95 [94-96]%; MD: -3.50%, 95% CI: -5.00 to -2.00) increased  significantly after endotracheal surfactant and budesonide treatment when compared to pre-treatment values (P<0.001).  
  Conclusion: The reduction in oxygen demand and OSI, along with an increase in SpO2  after treatment compared to pre-treatment  values, suggests that endotracheal surfactant and budesonide combination therapy could be an effective option to improve  oxygenation in NARDS secondary to LONS.