The use of an inspiration-synchronized vibrating mesh nebulizer for prolonged inhalative iloprost administration in mechanically ventilated patients: an in vitro model

Mechanically ventilated patients suffering from acute respiratory distress syndrome (ARDS) frequently receive aerosolized iloprost. Because of prostacyclin’s short half-life, prolonged inhalative administration might improve its clinical efficacy. But, this is technically challenging. A solution mig...

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Hauptverfasser: Otto, Matthias (VerfasserIn) , Kropp, Yannik (VerfasserIn) , Jäger, Evelyn (VerfasserIn) , Neumaier, Michael (VerfasserIn) , Thiel, Manfred (VerfasserIn) , Quintel, Michael (VerfasserIn) , Tsagogiorgas, Charalambos (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 3 August 2023
In: Pharmaceutics
Year: 2023, Jahrgang: 15, Heft: 8, Pages: 1-13
ISSN:1999-4923
DOI:10.3390/pharmaceutics15082080
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.3390/pharmaceutics15082080
Verlag, kostenfrei, Volltext: https://www.mdpi.com/1999-4923/15/8/2080
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Verfasserangaben:Matthias Otto, Yannik Kropp, Evelyn Jäger, Michael Neumaier, Manfred Thiel, Michael Quintel and Charalambos Tsagogiorgas

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520 |a Mechanically ventilated patients suffering from acute respiratory distress syndrome (ARDS) frequently receive aerosolized iloprost. Because of prostacyclin’s short half-life, prolonged inhalative administration might improve its clinical efficacy. But, this is technically challenging. A solution might be the use of inspiration-synchronized vibrating mesh nebulizers (VMNsyn), which achieve high drug deposition rates while showing prolonged nebulization times. However, there are no data comparing prolonged to bolus iloprost nebulization using a continuous vibrating mesh nebulizer (VMNcont) and investigating the effects of different ventilation modes on inspiration-synchronized nebulization. Therefore, in an in vitro model of mechanically ventilated adults, a VMNsyn and a VMNcont were compared in volume-controlled (VC-CMV) and pressure-controlled continuous mandatory ventilation (PC-CMV) regarding iloprost deposition rate and nebulization time. During VC-CMV, the deposition rate of the VMNsyn was comparable to the rate obtained with the VMNcont, but 10.9% lower during PC-CMV. The aerosol output of the VMNsyn during both ventilation modes was significantly lower compared to the VMNcont, leading to a 7.5 times longer nebulization time during VC-CMV and only to a 4.2 times longer nebulization time during PC-CMV. Inspiration-synchronized nebulization during VC-CMV mode therefore seems to be the most suitable for prolonged inhalative iloprost administration in mechanically ventilated patients. 
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