Related Experiment Video
Updated: Feb 18, 2026
10:36
A Swine Model of Neonatal Asphyxia
Published on: October 11, 2011
14.9K
The hypoxic test in preterm neonates reinvestigated.
Christelle Kouakam1, Erwan Stephan-Blanchard1, André Léké1,2
1PériTox-INERIS laboratory UMR_I 01, Jules Verne University of Picardy, Amiens, France.
Pediatric Pulmonology
|November 15, 2017
Summary
We developed a reliable method to assess peripheral chemoreceptor sensitivity in preterm infants. This technique measures ventilatory response to hypoxia during sleep, aiding research in conditions like bronchopulmonary dysplasia.
Area of Science:
- Neonatal physiology
- Respiratory control
Background:
- Current methods for assessing peripheral chemoreceptor sensitivity are inadequate for modern equipment.
- Accurate assessment is crucial for understanding respiratory regulation in neonates.
Purpose of the Study:
- To develop a reproducible method for assessing peripheral chemoreceptor sensitivity in sleeping preterm neonates.
- To establish a gold-standard technique for clinical implementation.
Main Methods:
- A poikilocapnic hypoxic test was administered twice during REM and nonREM sleep.
- Infants breathed 15% O2 for 60 seconds, with ventilatory response measured against normoxia.
- Response time to hypoxia was recorded, alongside minute ventilation changes.
Main Results:
- Minute ventilation was higher during REM sleep than nonREM sleep under normoxia.
- Hypoxia significantly increased minute ventilation in both sleep stages, with a greater response during REM sleep.
- Intraclass correlation coefficients for respiratory parameters exceeded 0.90, indicating high reliability.
Conclusions:
- A highly reliable method for assessing peripheral chemoreceptor sensitivity at the response time to hypoxia has been developed.
- This method can be utilized to investigate the role of peripheral chemoreceptors in infants with chronic hypoxia.
- Potential applications include studying conditions such as bronchopulmonary dysplasia and recurrent apnea.
