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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
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Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
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The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
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Funisitis Predicts Poor Respiratory Outcomes in Extremely Preterm Neonates.

Yi-Li Hung1,2,3, Chung-Min Shen1,4, Wu-Shiun Hsieh1,3,5

  • 1Department of Pediatrics, Cathay General Hospital, Taipei 106, Taiwan.

Children (Basel, Switzerland)
|November 27, 2025
PubMed
Summary

Histological chorioamnionitis with funisitis significantly worsens respiratory outcomes in preterm infants, increasing chronic lung disease risk. Funisitis independently predicts poor respiratory outcomes, highlighting its clinical importance.

Keywords:
chronic lung diseasefunisitishistological chorioamnionitispreterm neonates

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Area of Science:

  • Neonatology
  • Perinatal Medicine
  • Pulmonology

Background:

  • Histological chorioamnionitis (HCAM) is a known risk factor for chronic lung disease (CLD) in preterm neonates.
  • Funisitis, indicating fetal inflammatory response, is linked to adverse outcomes, but its specific impact on respiratory health in extremely preterm infants requires further clarification.

Purpose of the Study:

  • To investigate the association between HCAM with funisitis and poorer respiratory outcomes compared to HCAM alone in preterm neonates (gestational age 22-36 weeks).

Main Methods:

  • Retrospective cohort study involving very low-birth weight (VLBW) preterm neonates with placental histopathology.
  • Classification into three groups: normal, isolated HCAM, and HCAM with funisitis.
  • Comparison of perinatal characteristics, radiographic findings, morbidities, and respiratory outcomes.

Main Results:

  • Neonates with HCAM and funisitis had lower gestational age and higher rates of clinical chorioamnionitis.
  • Higher incidence of cystic-interstitial lung changes and CLD in the HCAM with funisitis group compared to isolated HCAM and normal groups.
  • Funisitis independently predicted CLD development (adjusted odds ratio 15.259) more strongly than HCAM alone (adjusted odds ratio 3.841).

Conclusions:

  • Funisitis is an independent predictor of poor respiratory outcomes in extremely preterm infants.
  • The presence of funisitis, in addition to HCAM, significantly increases the risk of CLD.
  • Further investigation into the long-term clinical impacts of funisitis in preterm infants is warranted.