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High-frequency oscillatory ventilation in pediatric patients
E L Duval1, D G Markhorst, R J Gemke
1Pediatric Intensive Care Unit, University Children's Hospital Het Wilhelmina Kinderziekenhuis, Utrecht, The Netherlands.
Insights
High-frequency oscillatory ventilation (HFOV) is a safe and effective strategy for pediatric respiratory failure when specific conditions are met. This study analyzed 35 children, showing improved oxygenation in survivors using HFOV.
Area of Science:
- Pediatric Critical Care Medicine
- Respiratory Physiology
- Mechanical Ventilation
Background:
- High-frequency oscillatory ventilation (HFOV) utilizes small tidal volumes and low pressures at high frequencies.
- HFOV is applied beyond the neonatal period for specific pediatric lung diseases.
- This retrospective analysis examined 35 children with respiratory failure who were previously on conventional ventilation.
Purpose of the Study:
- To evaluate the safety and effectiveness of HFOV in pediatric patients with severe respiratory failure.
- To explore different HFOV strategies based on underlying pulmonary pathophysiology.
- To assess the impact of HFOV on oxygenation and clinical outcomes in critically ill children.
Main Methods:
- Retrospective analysis of 35 children in two tertiary pediatric intensive care units.
- Implementation of three distinct HFOV strategies: 'open-lung', 'low-volume', and 'open-airway'.
- Strategies were tailored to specific conditions including diffuse alveolar damage, pulmonary hemorrhage, persistent air leak, and obstructive airway disease.
Main Results:
- Seven patient deaths occurred, two attributed to respiratory failure.
- Three patients experienced air leak complications, and nine developed chronic lung disease.
- Survivors showed a significant decrease in the oxygenation index (OI), while OI increased in those who died from respiratory failure.
Conclusions:
- HFOV can be a safe and effective ventilation mode for pediatric respiratory failure under specific conditions.
- Tailored HFOV strategies based on lung pathophysiology may improve outcomes.
- Further research is warranted to optimize HFOV application in pediatric critical care.
Background:
High-frequency oscillatory ventilation (HFOV) is a ventilatory mode using small tidal volumes with low phasic pressures at supraphysiological frequencies. Beyond the neonatal period there are distinct lung diseases for which HFOV is used. Data of 35 children who deteriorated on conventional ventilation were retrospectively analysed in two tertiary pediatric intensive care units.
Methods:
Depending on the underlying pulmonary pathophysiology, three strategies were employed. First, the 'open-lung' strategy designed to rapidly recruit and maintain optimal lung volume in DAD (n=27) and pulmonary hemorrhage (n=5). Second, the 'low-volume' strategy in persistent air leak (n=1) where, after an initial identical approach, mean airway pressure (MAP) is reduced until the air leak ceases. Third, the 'open-airway' strategy in obstructive airway disease (n=5) where MAP is used to recruit and stent the airways.
Results:
Seven patients died, two due to respiratory failure. Three patients developed an air leak. Nine patients developed chronic lung disease. There was a significant decrease of the oxygenation index (OI) in the survivors. In the two patients who died of respiratory failure, the OI increased.
Conclusion:
If certain conditions are met, HFOV appears a safe and effective mode of ventilation in pediatric respiratory failure.