Continuous positive airway pressure delivery during less invasive surfactant administration: a physiologic study

Giorgio Conti, Daniele De Luca, Gilles Jourdain, Marie De Tersant, Valentina Dell'Orto

Risultato della ricerca: Contributo in rivistaArticolo in rivista

11 Citazioni (Scopus)

Abstract

Objective: We sought to investigate the pressure delivery during less invasive surfactant administration, as we hypothesize that it might be reduced. Study design: Physiologic in vitro study in a ventilation lab, using different pressure generators, levels, and leaks in a model of neonatal airways/lung mimicking mechanical characteristics of respiratory distress syndrome. Pressure was measured at the lung and verified in vivo measuring pharyngeal pressure in 19 neonates under same conditions. Data were analyzed using repeated measures-analysis of variance. Results: Pressure delivery in vitro is significantly and variably reduced during minimally invasive surfactant administration: pressure loss is ≈99% and ≈10–97%, during mouth opening and closure, respectively. Pressure loss seems independent from the type of CPAP and interface. In vivo measurements showed similar pressure drops. Conclusions: Pressure transmission during minimally invasive surfactant administration is significantly reduced or totally absent. Pressure drop occurs despite the increased airway resistances and the airflow limitation due to the tracheal catheterization, but is independent from the type of pressure generator and interface.
Lingua originaleEnglish
pagine (da-a)1-7
Numero di pagine7
RivistaJournal of Perinatology
Volume38
DOI
Stato di pubblicazionePubblicato - 2017

Keywords

  • Obstetrics and Gynecology
  • Pediatrics, Perinatology and Child Health

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