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Porcine-derived surfactant treatment of severe bronchiolitis
M Luchetti1, G Casiraghi, R Valsecchi
1Department of Anaesthesia and Intensive Care, Fatebenefratelli and Ophthalmiatric Hospital, Milano, Italy.
Insights
Surfactant treatment improved gas exchange and reduced mechanical ventilation duration in infants with severe bronchiolitis. This study suggests surfactant therapy may be beneficial for severe pediatric respiratory distress.
Area of Science:
- Pediatric Pulmonology
- Critical Care Medicine
- Neonatal Respiratory Support
Background:
- Severe bronchiolitis impacts surfactant system activity.
- Restoring surfactant function may improve outcomes.
- Mechanical ventilation is often required for severe cases.
Purpose of the Study:
- To assess surfactant's effect on gas exchange in severe bronchiolitis.
- To evaluate impact on mechanical ventilation and intensive care unit (ICU) stay.
- To determine effects on peak inspiratory pressure (PIP).
Main Methods:
- Randomized trial comparing continuous positive pressure ventilation (CPPV) plus surfactant vs. CPPV alone.
- Twenty mechanically ventilated children with bronchiolitis were enrolled.
- Porcine surfactant (50 mg/kg) was administered; gas exchange and ventilation parameters were monitored.
Main Results:
- Surfactant group showed improved oxygenation (PaO2/FiO2 ratio) and reduced PaCO2.
- Peak inspiratory pressure (PIP) decreased in the surfactant group.
- Duration of CPPV and ICU stay were shorter with surfactant treatment.
Conclusions:
- Surfactant therapy appears beneficial for severe bronchiolitis.
- It may improve gas exchange and reduce ventilation/ICU time.
- Larger, controlled studies are needed to confirm these findings.
Background:
It is hypothesized that surfactant treatment helps to improve severe bronchiolitis by restoring surfactant system activity. This study aims to assess the effect of surfactant on gas exchange, peak inspiratory pressure and duration of mechanical ventilation and intensive care unit (ICU) stay in children with severe bronchiolitis.
Methods:
Twenty children with bronchiolitis requiring mechanical ventilation were randomly assigned to one of two groups (10 patients each). Group A was treated with continuous positive pressure ventilation (CPPV) plus surfactant. Group B was treated with CPPV only. Porcine-derived surfactant, 50 mg/kg body weight, was instilled into the trachea. Arterial tension of oxygen/fraction of inspired oxygen (PaO2/FiO2) ratio, arterial tension of carbon dioxide (PaCO2), and peak inspiratory pressure (PIP) were assessed. Heart rate and non-invasive arterial blood pressure were monitored. The duration of CPPV and the length of ICU stay were also recorded. Finally, the incidence of complications and the survival rate were assessed.
Results:
In group A, the PaO2/FiO2 ratio significantly improved from 1 h and a reduction in PaCO2 was noted from 12 h. A reduction of PIP was observed from 3 h. The duration of CPPV and the length of ICU stay were reduced in group A. No complications were reported in either group and all children survived.
Conclusions:
Surfactant treatment of severe bronchiolitis appeared to improve gas exchange, reduce PIP and shorten CPPV and ICU stay. However, these initial results must be confirmed by a larger and more rigorously controlled study.