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Updated: Jan 17, 2026
Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants
Published on: March 14, 2013
Neonatal and 3-month cerebrovascular oxygenation, stability, and extraction in congenital heart disease versus
Nhu N Tran1,2,3, Jodie K Votava-Smith2,4, John C Wood2,4
1Institute for the Developing Mind, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA, USA.
Insights
Infants with congenital heart disease (CHD) show poorer cerebrovascular health, including lower oxygenation and stability, compared to healthy infants. These findings suggest potential early biomarkers for neurodevelopmental delays in at-risk infants.
Area of Science:
- Pediatric Neurology
- Neonatal Physiology
- Cardiovascular Research
Background:
- Congenital heart disease (CHD) can impact neurodevelopmental outcomes in infants.
- Cerebrovascular health is crucial for infant brain development.
- Assessing cerebral oxygenation and stability in neonates is vital for early intervention.
Purpose of the Study:
- To compare cerebrovascular health indices between infants with CHD and healthy controls.
- To evaluate regional cerebral oxygenation (rcSO2), cerebrovascular stability, and cerebral fractional tissue oxygen extraction (FTOE) in neonates and 3-month-old infants.
- To identify potential early biomarkers for neurodevelopmental delays in infants with CHD.
Main Methods:
- A cohort study involving 101 neonates and 108 infants at 3 months.
- Noninvasive measurement of cerebrovascular health indices using near-infrared spectroscopy during postural changes (tilts).
- Mixed-effects regression models were used to analyze differences in rcSO2 and FTOE between groups, adjusting for relevant covariates.
Main Results:
- Infants with CHD exhibited significantly lower rcSO2 at both neonatal and 3-month assessments (p < 0.001).
- Increased FTOE was observed in infants with CHD compared to controls at both time points (p < 0.001).
- Reduced cerebrovascular stability was consistently found in infants with CHD versus healthy controls (p < 0.001).
Conclusions:
- Infants with CHD demonstrate persistently poorer cerebrovascular health indices through 3 months of age.
- Sustained cerebral hypoxia, reduced cerebrovascular stability, and increased FTOE in CHD infants may contribute to neurodevelopmental delays.
- These cerebrovascular metrics could serve as early biomarkers for identifying infants at higher risk for neurodevelopmental delays.
Objective:
We compared indices for cerebrovascular health (i.e., physiological responses to tilts by measuring regional cerebral oxygenation [rcSO2], cerebrovascular stability, and cerebral fractional tissue oxygen extraction [FTOE]) in infants with congenital heart disease (CHD) versus healthy controls (HC) at neonatal and 3-month ages.
Study Design:
Our cohort study included 101 neonates (52 CHD, 49 HC) and 108 infants at 3-months (45 CHD, 63 HC). We used an innovative and replicable evaluation tool to noninvasively and rapidly measure indices of cerebrovascular health. Changes in near infrared spectroscopy measures of rcSO2 after tilting (from supine to sitting, ∼150 values) assessed cerebrovascular stability. Mixed-effects regression models examined rcSO2 and FTOE differences between groups, and group-by-posture interactions, adjusting for postconceptional age, sex, ethnicity, and preductal systemic oxygenation (SpO2) at both ages.
Results:
Infants with CHD had significantly lower rcSO2 (13% at neonatal and 11% at 3-months, both p < 0.001), increased FTOE (∼0.14 points higher at neonatal and ∼ 0.09 points at 3-months, both p < 0.001), and reduced cerebrovascular stability compared with HC at both ages (both p < 0.001).
Conclusions:
CHD infants had persistently poorer indices of cerebrovascular health (i.e., lower rcSO2, increased FTOE, and reduced cerebrovascular stability) through the 3-month age compared to controls. Sustained cerebral hypoxia, reduced cerebrovascular stability, and increased FTOE may contribute to neurodevelopmental delays (NDDs) and could serve as early biomarkers for identifying infants at higher risk for NDD.
