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The severity of RDS during the first two neonatal days in relationship to fluid intake
1Deparment of Paediatrics, University of Helsinki, Finland.
Insights
Fluid intake in the first 48 hours is linked to respiratory failure severity in preterm infants with respiratory distress syndrome (RDS). Higher liquid intake correlates with worse respiratory outcomes, suggesting a need for revised hydration guidelines.
Area of Science:
- Neonatalogy
- Pediatric Critical Care
- Respiratory Medicine
Background:
- Optimal hydration strategies for preterm infants with respiratory distress syndrome (RDS) are not well-established.
- Early fluid management is crucial for clinical outcomes in vulnerable neonates.
Purpose of the Study:
- To investigate the relationship between early liquid intake and the severity of respiratory failure in mechanically ventilated preterm infants with RDS.
- To determine if hydration levels influence respiratory outcomes in the first 48 hours of life.
Main Methods:
- Prospective study of 120 mechanically ventilated preterm infants (gestational age < 30 weeks, birth weight < 1,750 g) with RDS.
- Correlation and multiple regression analyses were used to assess the association between total liquid intake (intravenous fluids, drugs, enteral nutrition) and respiratory failure severity at day two.
- Analysis was stratified by gestational age, small for gestational age status, preeclampsia, surfactant use, and fluid intake volume.
Main Results:
- A significant positive linear relationship was found between total liquid intake and the degree of respiratory failure (p < 0.0001).
- Liquid intake remained a significant predictor of respiratory failure across various subgroups, including different gestational ages and clinical interventions.
- This association persisted even when controlling for other perinatal factors.
Conclusions:
- Early fluid management significantly impacts respiratory failure severity in preterm infants with RDS.
- Current hydration practices may need re-evaluation to optimize respiratory support and outcomes in this population.
- Further research is warranted to establish evidence-based hydration guidelines for neonates with RDS.
Abstract:
There are no generally accepted guidelines regarding the degree of hydration of small preterm infants with RDS. In the present prospective study, liquid intake (intravenous fluids, drugs, and enteral nutrition) during the first 48 h was correlated with the degree of respiratory failure at the age of two days in 120 consecutive, mechanically ventilated, small preterm infants with RDS (GA less than 30 w, BW less than 1,750 g). There was a positive linear relationship between the amount of liquids given and the degree of respiratory failure. Multiple regression analysis taking into consideration various perinatal factors revealed that the liquid intake explained the degree of respiratory failure (p less than 0.0001). The regression analysis revealed a similar dependence of respiratory failure on the liquid intake in the following groups of infants: GA less than 27 w (p = 0.023); GA 27-30 w (p = 0.005); SGA (p = 0.104); Non-SGA (p = 0.001); severe preeclampsia (p = 0.018); surfactant substitution (p = 0.002); liquid intake 127-240 ml/48 h (p less than 0.006); liquid intake 240-430 ml/48 h (p less than 0.047). The present results demonstrate the need to re-evaluate the optimal needs of hydration among infants with RDS during the very early neonatal period.