Aerosolized surfactants

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Purpose of reviewTo present existing data on the potential use of aerosolized surfactants for treatment of neonatal respiratory distress syndrome in the era of noninvasive ventilatory support.Recent findingsCurrent surfactant therapy requires endotracheal intubation and application of positive pressure ventilation. Instillation of the drug itself can be complicated by ‘peridosing adverse events’ including, but not limited to, desaturations, bradycardias, changes in blood pressure, drug reflux and even the need for reintubations. Increasing use of noninvasive ventilatory support for neonatal respiratory distress syndrome has motivated clinicians and researchers to look for alternate ways of introducing surfactants to patients. Aerosolized surfactants have been tested in animal models of respiratory distress syndrome. In addition, four small clinical studies have been performed to date. The effectiveness of this form of treatment requires further study, however, which will need to include optimizing the dose of aerosolized surfactant, choosing particle size, developing the best delivery system, and using a surfactant formulation that maintains its activity once aerosolized.SummaryAerosolized surfactants for neonatal respiratory distress syndrome may prevent the need for endotracheal intubation. Appropriately designed randomized controlled studies are required to determine if this form of surfactant administration is as effective and safe as tracheal instillation.

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