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Corticosteroids and neonatal chronic lung disease
1University of Miami, Department of Pediatrics (R-131), FL 33101, USA.
Insights
Systemic steroids rapidly improve lung function in infants with chronic lung disease, reducing ventilator duration. However, they do not improve survival or long-term outcomes and carry significant side effects.
Area of Science:
- Neonatology
- Pediatric Pulmonology
- Critical Care Medicine
Background:
- Inflammation is a key factor in the development of chronic lung disease (CLD).
- Infants dependent on mechanical ventilation often develop CLD.
- Systemic steroids are explored for their anti-inflammatory effects in this population.
Purpose of the Study:
- To evaluate the efficacy and safety of steroid therapy in ventilator-dependent infants with CLD.
- To determine the impact of steroids on lung function, ventilation duration, and long-term outcomes.
Main Methods:
- Systemic steroid administration was studied in ventilator-dependent infants.
- Tracheobronchial secretions were analyzed for inflammatory markers.
- Pulmonary compliance, resistance, and gas exchange were assessed.
- Long-term neurological development and mortality were monitored.
Main Results:
- Systemic steroids reduced inflammatory markers and improved pulmonary mechanics and gas exchange.
- Ventilator settings were reduced, facilitating weaning from mechanical ventilation.
- No significant improvement in mortality or long-term outcome was observed.
- Acute side effects and potential long-term adverse effects on lung and CNS development were noted.
Conclusions:
- Steroid therapy can decrease the duration of mechanical ventilation and oxygen support in infants with CLD.
- It may reduce the incidence of severe chronic lung disease.
- Steroid use does not enhance survival rates or improve long-term neurological outcomes in these infants.
Unlabelled:
There is increasing evidence that inflammation plays an important role in the pathogenesis of chronic lung disease (CLD). Systemic steroid administration reduces the concentration of inflammatory markers in tracheobronchial secretions and produces a rapid improvement in pulmonary compliance and resistance and an improvement in gas exchange in ventilator dependent infants. This improvement in lung function allows a reduction in ventilator settings and facilitates weaning from mechanical ventilation and increased inspired oxygen concentrations. Despite this rapid improvement in lung function, the use of steroids does not modify mortality or long-term outcome and it is associated with many acute side-effects and possible long-term deleterious consequences on lung and CNS development. Inhaled steroids have also been used in infants with CLD or at risk of CLD and although the reported side-effects are significantly less than with systemic therapy their effectiveness is also less obvious.
Conclusion:
Steroid therapy in ventilator dependent infants reduces the duration of mechanical ventilation and oxygen therapy and may reduce the incidence of severe CLD. The use of steroids in infants with CLD does not improve survival rate or long-term neurological outcome.