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Transcutaneous Microcirculatory Imaging in Preterm Neonates
Published on: December 31, 2015
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Transcutaneous carbon dioxide pattern and trend over time in preterm infants
Katherine P Sullivan1, Heather O White2, Lindsay E Grover2
1Department of Neonatology, University of Massachusetts Medical School, Worcester, MA, USA. Katherine.sullivan@umassmemorial.org.
Pediatric Research
|January 20, 2021
Summary
Hypercarbia in extremely preterm infants improves with age, stabilizing by 31-33 weeks post-menstrual age. This pattern of elevated carbon dioxide levels changes with gestational age at birth, regardless of respiratory support.
Area of Science:
- Neonatology
- Pediatric Pulmonology
- Critical Care Medicine
Background:
- Chronic lung disease is a significant challenge for extremely preterm infants.
- Optimal ventilatory management strategies remain unclear.
- Non-invasive monitoring technologies offer insights into ventilation patterns.
Purpose of the Study:
- To describe the pattern of hypercarbia in extremely preterm infants throughout hospitalization.
- To investigate the relationship between hypercarbia, gestational age, and post-menstrual age.
- To understand ventilation changes in relation to respiratory support.
Main Methods:
- A single-center prospective cohort study involving infants born at or before 32 0/7 weeks gestational age.
- Transcutaneous carbon dioxide (TcCO2) measurements were taken twice weekly.
- Analysis focused on describing hypercarbia patterns relative to clinical factors.
Main Results:
- Hypercarbia patterns varied significantly by birth gestational age and post-menstrual age (PMA).
- Infants on maximal respiratory support had significantly higher TcCO2 values (16-21 mmHg higher).
- TcCO2 values stabilized by 31-33 weeks PMA, with no rebound upon weaning support.
Conclusions:
- Hypercarbia in extremely preterm infants generally improves with increasing post-menstrual age (31-33 weeks PMA).
- The most immature infants exhibited the highest hypercarbia, which decreased with age despite respiratory support weaning.
- Ventilation patterns are distinct based on gestational age at birth and post-menstrual age.
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