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Matching ventilatory support strategies to respiratory pathophysiology
Anne Greenough1, Steven M Donn
1Division of Asthma, Allergy and Lung Biology, King's College London, Children Nationwide Regional Neonatal Intensive Care Centre, 4th Floor, Golden Jubilee Wing, King's College Hospital, London SE5 9PJ, UK. anne.greenough@kcl.ac.uk
Insights
Optimizing respiratory support for neonates with lung disease is crucial. Current evidence suggests specific ventilation strategies for respiratory distress syndrome and severe respiratory failure, but more research is needed for other conditions like bronchopulmonary dysplasia.
Area of Science:
- Neonatal Medicine
- Pulmonology
- Critical Care
Background:
- Neonatal lung diseases necessitate tailored respiratory support based on specific pathophysiology.
- Optimal ventilation strategies vary significantly between different neonatal respiratory disorders.
Purpose of the Study:
- To review current evidence on respiratory support for neonates with lung diseases.
- To identify gaps in knowledge regarding optimal respiratory strategies for various neonatal respiratory conditions.
Main Methods:
- Meta-analysis of randomized trials focusing on respiratory support in neonates.
- Review of existing literature on ventilation strategies for respiratory distress syndrome and severe respiratory failure.
Main Results:
- For premature infants with respiratory distress syndrome (RDS), prophylactic high-frequency oscillatory ventilation shows a modest benefit in reducing bronchopulmonary dysplasia.
- Patient-triggered ventilation, initiated during the recovery phase, shortens ventilation duration in RDS.
- Extracorporeal membrane oxygenation improves survival in term infants with severe respiratory failure, while inhaled nitric oxide has a limited effect on reducing ECMO need.
Conclusions:
- Current research primarily focuses on respiratory distress syndrome and severe respiratory failure in neonates.
- Further research is essential to determine optimal respiratory strategies for infants with other conditions, particularly bronchopulmonary dysplasia.
Abstract:
Neonates can suffer from various diseases that impact differently on lung function according to the specific pulmonary pathophysiology. As a consequence, the optimal respiratory support will vary according to disorder. Most randomized trials have only included prematurely born infants who have respiratory distress syndrome (RDS) or infants who have severe respiratory failure. Meta-analysis of the results has demonstrated that for the prematurely born infant who has RDS, prophylactic high-frequency oscillatory ventilation only results in a modest reduction in bronchopulmonary dysplasia, and patient-triggered ventilation (assist/control or synchronized intermittent mandatory ventilation) reduces the duration of ventilation if started in the recovery phase. Whether the newer triggered modes are more efficacious remains to be appropriately tested. In term infants who have severe respiratory failure, extracorporeal membrane oxygenation increases survival, but inhaled nitric oxide only reduces the need for extracorporeal membrane oxygenation. Research is required to identify the optimum respiratory strategy for infants who have other respiratory disorders, particularly bronchopulmonary dysplasia.
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