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Antenatal steroid administration is associated with an improved chance of intact survival in preterm infants
J M Rennie1, M Wheater, T J Cole
1Rosie Maternity Hospital, Cambridge, UK.
Insights
Antenatal steroid administration significantly improves survival outcomes for very low birth weight infants. This treatment offers a threefold increase in the chance of normal survival by 18 months, reducing mortality risks.
Area of Science:
- Neonatalogy
- Perinatal Medicine
- Pediatric Critical Care
Background:
- Preterm birth presents significant mortality risks for infants.
- Antenatal steroid therapy is a critical intervention for improving preterm infant outcomes.
Purpose of the Study:
- To analyze factors influencing intact survival in very low birth weight (VLBW) infants.
- To quantify the impact of antenatal steroid administration on long-term survival.
Main Methods:
- Logistic regression analysis of 798 VLBW infants admitted between 1985 and 1992.
- Evaluation of antenatal steroid administration and other clinical factors on survival rates.
Main Results:
- Antenatal steroid administration (n=87) was linked to a threefold increase in normal survival (OR 3.0, 95% CI 1.5-5.9).
- Improved outcomes also associated with normal cranial ultrasound, female sex, higher Apgar scores, lower oxygen needs, and greater birth weight.
Conclusions:
- Antenatal steroid therapy significantly enhances the likelihood of normal survival for VLBW infants at 18 months.
- Reduced periventricular hemorrhage following antenatal steroid use correlates with improved long-term outcomes.
Unlabelled:
Antenatal steroid administration reduces mortality in preterm infants. We used logistic regression analysis to explore the influence of various factors on intact survival in a population of 798 very low birth weight infants admitted between 1985 and 1992. Antenatal steroid administration (n = 87) was associated with an improved chance of normal survival with an odds ratio of 3.0 (95% confidence intervals from 1.5 to 5.9). Other factors associated with improved outcome were a normal cranial ultrasound image or one showing subependymal haemorrhage, female sex, a 5 min Apgar score above 5, low inspired oxygen concentration and higher birth weight. Year of birth was not associated with a consistent trend to improve outcome over this period and surfactant administration rates were constant throughout. These results endorse the current recommendations to increase the use of antenatal steroid therapy.
Conclusion:
Antenatal steroid administration was associated with a threefold improvement in the chance of normal survival for very low birth weight infants as assessed at 18 months. These results suggest that the reduction in periventricular haemorrhage after antenatal steroid use is translated into a better longterm outcome.