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Related Experiment Videos

Eicosanoids decrease with successful extracorporeal membrane oxygenation therapy in neonatal pulmonary hypertension

E L Dobyns1, J Y Wescott, J M Kennaugh

  • 1Department of Pediatric Critical Care, University of Colorado Health Sciences Center, Webb-Waring Lung Institute, Denver 80262.

American Journal of Respiratory and Critical Care Medicine
|April 1, 1994
PubMed
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Infants with persistent pulmonary hypertension (PPHN) have high eicosanoid levels. Treatment, especially extracorporeal membrane oxygenation (ECMO), reduced these mediators and improved infant outcomes, suggesting a link between eicosanoids and PPHN severity.

Area of Science:

  • Neonatal Medicine
  • Pulmonary Hypertension
  • Biochemistry

Background:

  • Elevated eicosanoids are implicated in persistent pulmonary hypertension of the newborn (PPHN).
  • Extracorporeal membrane oxygenation (ECMO) improves outcomes for severe PPHN cases.

Purpose of the Study:

  • To investigate the association between ECMO, eicosanoid production, and clinical outcomes in PPHN infants.
  • To determine if alleviating lung injury with ECMO reduces eicosanoid levels.

Main Methods:

  • Serial measurement of various eicosanoids (TxB2, 6-keto-PGF1α, PGD2, PGE2, LTB4, LTE4) in bronchoalveolar lavage fluid (BALF).
  • Study included 22 newborns with PPHN treated with ECMO or conventional therapy.
  • Comparison of eicosanoid levels between infants with good vs. poor outcomes post-ECMO and between ECMO and non-ECMO groups.

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Main Results:

  • All PPHN infants initially showed elevated eicosanoid concentrations in BALF.
  • Eicosanoid levels decreased in infants with good clinical outcomes after ECMO.
  • Infants not requiring ECMO had lower initial eicosanoid levels, which increased or remained stable with conventional treatment.

Conclusions:

  • Eicosanoids are significantly elevated in infants with PPHN.
  • Iatrogenic factors like oxygen and barotrauma correlate with eicosanoid concentrations.
  • Reducing these factors is linked to decreased mediator production and improved clinical status in PPHN.