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Oxygen cost of breathing in newborn infants with long-term ventilatory support
J C Rozé1, B Chambille, M A Fleury
1Neonatal Department, Hôpital Universitaire de Nantes, France.
Insights
Newborn infants who develop chronic lung disease have a higher oxygen cost of breathing. This increased oxygen consumption (VO2) during spontaneous breathing indicates greater respiratory effort in these infants.
Area of Science:
- Neonatal Medicine
- Respiratory Physiology
- Pediatric Pulmonology
Background:
- Chronic lung disease is a significant concern in premature infants.
- Assessing respiratory effort is crucial for managing infants with respiratory issues.
Purpose of the Study:
- To compare the oxygen cost of breathing in newborn infants who later developed chronic lung disease versus healthy controls.
- To investigate the relationship between ventilation methods and oxygen consumption in at-risk neonates.
Main Methods:
- Measured oxygen consumption (VO2) during controlled and spontaneous ventilation with continuous positive airway pressure.
- Included newborn infants who subsequently developed chronic lung disease and a control group.
Main Results:
- Infants who developed chronic lung disease exhibited a significantly higher oxygen cost of breathing compared to controls.
- The oxygen cost of breathing was 20.1% +/- 7.5% in the chronic lung disease group versus 4.8% +/- 4.9% in controls (p < 0.05).
Conclusions:
- Elevated oxygen cost of breathing is a potential indicator of chronic lung disease development in neonates.
- This finding highlights increased respiratory workload in infants with developing chronic lung disease.
Abstract:
Oxygen consumption (VO2) was measured during controlled and spontaneous ventilation with continuous positive airway pressure in newborn infants in whom chronic lung disease later developed. The oxygen cost of breathing (the difference in VO2 between spontaneous and controlled ventilation) was significantly higher in infants with chronic lung disease than in control infants (20.1% +/- 7.5% and 4.8% +/- 4.9% of VO2 during spontaneous ventilation (p < 0.05), respectively).