Lung deposition of nebulized surfactant in newborn piglets: Nasal CPAP vs Nasal IPPV

Research output: Contribution to journalArticle

Abstract

Background: Nasal continuous positive airway pressure support (nCPAP) is the standard of care for prematurely born infants at risk of neonatal respiratory distress syndrome (nRDS). However, nasal intermittent positive pressure ventilation (NIPPV) may be an alternative to nCPAP in babies requiring surfactant, and in conjunction with surfactant nebulization, it could theoretically reduce the need for invasive mechanical ventilation. We compared lung deposition of nebulized poractant in newborn piglets supported by nCPAP or NIPPV. Methods: Twenty-five sedated newborn piglets (1.2-2.2 kg) received either nCPAP (3 cmH2O, n = 12) or NIPPV (3 cmH2O positive end expiratory pressure+3 cmH2O inspiratory pressure, n = 13) via custom-made nasal prongs (FiO2 0.4, Servo-i ventilator). Piglets received 200 mg kg−1 of technetium-99m-surfactant mixture continuously nebulized with a customized eFlow-Neos investigational vibrating-membrane nebulizer system. Blood gases were taken immediately before, during, and after nebulization. The deposition was estimated by gamma scintigraphy. Results: Mean surfactant deposition in the lungs was 15.9 ± 11.9% [8.3, 23.5] (mean ± SD [95% CI]) in the nCPAP group and 21.6 ± 10% [15.6, 27.6] in the NIPPV group (P =.20). Respiratory rates were similar in both groups. Minute volume was 489 ± 203 [360, 617] in the nCPAP group and 780 ± 239 [636, 924] mL kg−1 min−1 in the NIPPV group (P =.009). Blood gases were comparable in both groups. Conclusion: Irrespective of the noninvasive ventilatory support mode used, relatively high lung deposition rates of surfactant were achieved with nebulization. The amounts of deposited surfactant might suffice to elicit a pulmonary function improvement in the context of nRDS.

Details

Authors
  • Anders Nord
  • Rikard Linner
  • Fabrizio Salomone
  • Federico Bianco
  • Francesca Ricci
  • Xabi Murgia
  • Martin Schlun
  • Doris Cunha-Goncalves
  • Valeria Perez-de-Sa
Organisations
External organisations
  • Chiesi Farmaceutici S.p.A
  • Helmholtz Institute for Pharmaceutical Research Saarland
  • Pari Pharma GmbH
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Anesthesiology and Intensive Care

Keywords

  • aerosols, nebulizer, neonatal, noninvasive ventilation
Original languageEnglish
Pages (from-to)514-520
Number of pages7
JournalPediatric Pulmonology
Volume55
Issue number2
Early online date2019
Publication statusPublished - 2020 Feb
Publication categoryResearch
Peer-reviewedYes