Related Experiment Videos
Long-term MRI changes in brain after pediatric open heart surgery
G Miller1, A C Mamourian, J R Tesman
1Section of Pediatric Neurology, Baylor College of Medicine, Texas Children's Hospital, Houston 77030.
Journal of Child Neurology
|October 1, 1994
Summary
Brain imaging in children after open heart surgery revealed frequent abnormalities. Prolonged hypothermic circulatory arrest during early infancy significantly increased the risk of diffuse brain injury and neurodevelopmental issues.
Area of Science:
- Pediatric Neurology
- Cardiovascular Surgery
- Neuroimaging
Background:
- Congenital heart disease (CHD) often requires surgical intervention in infancy.
- The impact of open heart surgery on neurodevelopment in children is a significant concern.
- Magnetic resonance imaging (MRI) is crucial for assessing brain structure and potential injury.
Purpose of the Study:
- To investigate the neuroimaging findings and neurodevelopmental outcomes in children following open heart surgery for CHD.
- To identify risk factors associated with brain abnormalities after surgery.
- To correlate MRI findings with neurologic and psychometric assessments.
Main Methods:
- Performed brain MRI and neurologic examinations on 23 children post-open heart surgery for CHD.
- Conducted psychometric assessments on 20 children.
- Analyzed MRI findings for diffuse abnormalities, cortical infarction, and other structural anomalies.
- Correlated findings with age at operation, duration of hypothermic circulatory arrest, and neurodevelopmental outcomes.
Main Results:
- Seventeen out of 23 children (74%) showed abnormal MRI scans.
- Abnormalities included hypoxic-ischemic encephalopathy, cortical infarction, callosal agenesis, and neuronal migration disorders.
- Diffuse brain abnormalities were associated with prolonged hypothermic circulatory arrest and early infancy surgery, leading to cerebral palsy and mental retardation.
- Focal cortical lesions without diffuse changes were more common in older infants without circulatory arrest and had fewer neurodevelopmental sequelae.
Conclusions:
- Focal cortical lesions are common after open heart surgery in children with CHD.
- Diffuse brain abnormalities and subsequent neurologic sequelae are strongly linked to prolonged hypothermic circulatory arrest and early infant surgery.
- Neuroimaging plays a vital role in understanding the spectrum of brain injury in this population.