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[Residual lung function changes following adult respiratory distress syndrome (ARDS) in children]
Insights
Children surviving severe adult respiratory distress syndrome (ARDS) often experience lasting lung function issues. Mechanical ventilation during ARDS significantly correlates with these long-term respiratory abnormalities in pediatric survivors.
Area of Science:
- Pediatric Pulmonology
- Critical Care Medicine
- Respiratory Physiology
Background:
- Severe adult respiratory distress syndrome (ARDS) can lead to long-term respiratory complications.
- Pediatric survivors of ARDS require evaluation for residual lung function deficits.
- Understanding post-ARDS lung function is crucial for long-term pediatric health.
Purpose of the Study:
- To investigate residual lung function abnormalities in children after severe ARDS.
- To identify correlations between mechanical ventilation parameters and lung function outcomes.
- To assess the prevalence of respiratory symptoms and radiographic findings post-ARDS.
Main Methods:
- Longitudinal study of 9 pediatric ARDS survivors (mean 2.7 years post-ARDS).
- Pulmonary function tests to assess ventilation, gas exchange, and lung disease patterns.
- Analysis of mechanical ventilation data (duration of high FiO2, PEEP, inspiratory plateau pressure).
- Clinical assessment for respiratory symptoms and review of chest radiographs.
Main Results:
- All 9 children exhibited abnormal lung function, including ventilation inequalities, hypoxemia, and obstructive/restrictive lung disease.
- 3 children reported recurrent respiratory symptoms (dyspnea, cough); 2 showed lung fibrosis.
- Significant correlation found between duration of high FiO2 and inspiratory plateau pressure during ventilation and subsequent ventilation inequalities and hypoxemia.
Conclusions:
- Pediatric ARDS survivors frequently have persistent lung function abnormalities.
- Mechanical ventilation parameters, particularly duration of high FiO2 and inspiratory plateau pressure, are linked to poorer lung function outcomes.
- Early identification and management of residual lung deficits are important for children recovering from severe ARDS.
Abstract:
Residual lung function abnormalities have been investigated in 9 children (4 boys and 5 girls) a mean 2.7 years after surviving severe adult respiratory distress syndrome (ARDS). All patients had been artificially ventilated for an average of 9.4 days with a FiO2 greater than 0.5 for 34 hours and maximal PEEP levels in the range of 8-20 cm H2O. Since the ARDS, 3 children had presented recurrent respiratory symptoms (moderate exertional dyspnea and cough) and 2 had had evidence of fibrosis on chest radiographs. In all patients abnormal lung functions were found, i.e. ventilation inequalities (8), hypoxemia (7), and obstructive (2) and restrictive (1) lung disease. A significant correlation between respirator therapy and residual lung function was found (duration of FiO2 greater than 0.5 in hours and inspiratory plateau pressure during respirator therapy vs. ventilation inequalities and hypoxemia).