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Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
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Cardiorespiratory transition in CDH.

Deepika Sankaran1, Satyan Lakshminrusimha1, Michelle J Lim2

  • 1Division of Neonatology, Department of Pediatrics, University of California, Davis, United States.

Seminars in Fetal & Neonatal Medicine
|July 4, 2025
PubMed
Summary
This summary is machine-generated.

Congenital diaphragmatic hernia (CDH) impacts fetal development, causing altered hemodynamics and high mortality risk. Optimizing delivery room resuscitation and understanding cardiac involvement improve outcomes for infants with this condition.

Keywords:
Cardiopulmonary interactionsFetal circulationHypoxiaHypoxic respiratory failureNewbornOxygenPathophysiology of pulmonary hypertensionPulmonary hypertension

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Area of Science:

  • Neonatal Medicine
  • Pediatric Surgery
  • Fetal Surgery

Background:

  • Congenital diaphragmatic hernia (CDH) is a rare birth defect involving incomplete diaphragm closure, leading to abdominal organs in the chest.
  • CDH causes significant fetal hemodynamic alterations, including pulmonary hypoplasia and potential left heart issues.
  • High morbidity and mortality in CDH stem from pulmonary hypoplasia and persistent pulmonary hypertension.

Purpose of the Study:

  • To review the pathophysiology of congenital diaphragmatic hernia (CDH).
  • To discuss the critical cardiopulmonary transition in neonates with CDH.
  • To highlight strategies for improving clinical outcomes in CDH.

Main Methods:

  • Review of current literature on CDH pathophysiology and management.
  • Analysis of cardiopulmonary interactions in the fetal and neonatal periods.
  • Evaluation of delivery room resuscitation techniques and fetal interventions.

Main Results:

  • CDH leads to pulmonary hypoplasia and persistent pulmonary hypertension, complicating neonatal transition.
  • Effective resuscitation involves gentle ventilation, intubation, and gastric decompression.
  • Fetal interventions like fetoscopic endoluminal tracheal occlusion (FETO) show improved survival rates.

Conclusions:

  • Optimizing cardiopulmonary transition in the delivery room is crucial for CDH infants.
  • Understanding CDH sub-phenotypes and cardiac involvement guides precision management (ventilation, vasoactive drugs, ECMO).
  • Fetal interventions and improved postnatal care enhance survival and clinical outcomes for CDH patients.