Cerebral blood flow velocity in handicapped children
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S Sanada1, N Murakami, I Horiuchi
1Department of Child Neurology, Okayama University Medical School, Japan.
Insights
This study investigated blood flow velocity in children with severe motor and intellectual disabilities. Reduced middle cerebral artery to basilar artery blood flow velocity suggests decreased brain activity, particularly linked to severe motor disability.
Area of Science:
- Neuroscience
- Cerebrovascular Physiology
- Pediatric Neurology
Background:
- Severe motor and intellectual disabilities can impact brain function.
- Cerebral blood flow is a critical indicator of brain activity and health.
Purpose of the Study:
- To investigate the blood flow velocity (BFV) ratio of the middle cerebral artery (MCA) to the basilar artery (BA) in patients with severe motor and intellectual disability syndrome.
- To explore the relationship between the severity of motor and intellectual disability and MCA blood flow velocity.
Main Methods:
- Utilized a transcranial Doppler blood flowmeter to measure blood flow velocity.
- Analyzed the MCA/BA BFV ratio in 12 patients with severe motor and intellectual disability syndrome.
- Assessed MCA BFV in 58 handicapped children categorized by disability severity.
Main Results:
- 8 out of 12 patients with severe motor and intellectual disability syndrome showed an MCA/BA BFV ratio lower than the standard value.
- This suggests a more significant decrease in brain activity in the MCA territory compared to the BA territory.
- MCA BFV reduction was most pronounced in severely motor-impaired (bed-ridden) children.
Conclusions:
- Motor disability appears to be the primary factor associated with decreased MCA blood flow velocity.
- Findings suggest a link between motor impairment severity and reduced cerebral blood flow in specific brain regions.
Abstract:
Using a transcranial Doppler blood flowmeter, the blood flow velocity (BFV) ratio of the middle cerebral artery (MCA) to the basilar artery (BA) was investigated in 12 patients with severe motor and intellectual disability syndrome. The BFV of the MCA was also investigated in 58 handicapped children, classified according to the severity of their motor and intellectual disability. The ratio of the MCA to the BA was lower by 2 SD from the mean of our previously reported standard value in 8 out of the 12 cases with severe motor and intellectual disability syndrome, suggesting a more profound decrease in the level of brain activity in the MCA area than that of the BA area. The BFV of the MCA mainly decreased in cases belonging to the category of the most severe motor disability (bed-ridden). Hence, it is suggested that motor disability is the main factor related to the decrease in the BFV of the MCA.