Selection of babies for intervention after birth asphyxia

Area of Science:

• Neonatal Medicine
• Neuroscience
• Perinatal Research

Background:

• Perinatal hypoxia-ischaemia (H-I) poses a significant risk to neonates.
• Identifying neonates who will benefit from therapeutic interventions is critical.
• The therapeutic window for intervention is likely short, necessitating early patient selection.

Purpose of the Study:

• To evaluate methods for selecting neonates with H-I for therapeutic intervention.
• To identify reliable biomarkers and neurophysiological tools for predicting brain injury.
• To determine the optimal timing for intervention in term and preterm neonates.

Main Methods:

• Review of animal experiments to establish the therapeutic window.
• Analysis of clinical scoring systems, cord blood biomarkers (pH, PCO2, lactate/pyruvate, uric acid), and cerebrospinal fluid (CSF) interleukin-1beta.
• Evaluation of neurophysiological methods, including electroencephalography (EEG) and evoked potentials.

Main Results:

• Clinical scoring systems are insufficient for patient selection in term neonates.
• Umbilical cord blood markers (pH < 7.0, elevated lactate/pyruvate, PCO2 differences) and CSF interleukin-1beta show better predictive value.
• Neurophysiological methods (EEG, evoked potentials) demonstrate the highest predictive value for brain injury in both term and preterm neonates.
• Lactate/pyruvate and uric acid in cord blood are also helpful in preterm neonates.

Conclusions:

• Early patient selection within 6 hours is vital for neonates with H-I.
• Neurophysiological assessments are the most reliable tools for predicting brain injury and guiding intervention.
• Biomarkers in cord blood and CSF can supplement clinical evaluation for patient selection.