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Published on: November 3, 2016
[A comparative study of cerebellar development between appropriate-for-gestational age infants and
Ying Wang1, Gui-Fang Li, Rui-Ke Liu
1Department of Neonatology, Cangzhou People's Hospital, Cangzhou, Hebei 061000, China. liuruike@msn.com.
Insights
Small-for-gestational-age (SGA) infants show similar cerebellar development to appropriate-for-gestational-age (AGA) infants before 34 weeks. After 34 weeks, SGA infants exhibit poorer cerebellar development compared to AGA infants.
Area of Science:
- Neonatal neurodevelopmental imaging
- Fetal growth assessment
- Pediatric neurology
Background:
- Cerebellar development is crucial for motor and cognitive functions.
- Intrauterine growth restriction can impact fetal brain development.
- Understanding differences in cerebellar growth between appropriate-for-gestational-age (AGA) and small-for-gestational-age (SGA) infants is important for early identification of potential developmental issues.
Purpose of the Study:
- To compare cerebellar development in AGA and SGA infants.
- To identify potential gestational age thresholds where developmental differences emerge.
Main Methods:
- 165 AGA and 105 SGA infants (26-40 weeks gestation) underwent ultrasound within 48 hours of birth.
- Key cerebellar measurements included transverse diameter, vermis height/area/perimeter, and cerebellum area/perimeter.
- Pearson correlation analysis assessed the relationship between cerebellar measurements and gestational age.
Main Results:
- All cerebellar measurements positively correlated with gestational age in both AGA and SGA groups (r=0.50-0.81, P<0.05).
- No significant differences in cerebellar measurements were observed between AGA and SGA infants in gestational age subgroups <34 weeks.
- SGA infants showed significantly lower cerebellar measurements than AGA infants in gestational age subgroups ≥34 weeks (P<0.05).
Conclusions:
- Intrauterine cerebellar development is comparable between SGA and AGA infants before 34 weeks gestation.
- SGA infants aged ≥34 weeks exhibit impaired intrauterine cerebellar development compared to AGA infants.
- These findings highlight a critical window around 34 weeks gestation for monitoring cerebellar growth in SGA infants.
Objective:
To investigate whether there is a difference in cerebellar development between appropriate -for-gestational-age (AGA) infants and small-for-gestational-age (SGA) infants.
Methods:
A total of 165 AGA infants and 105 SGA infants, with a gestational age of 26-40+6 weeks, were enrolled in this study. Within 24-48 hours after birth, ultrasound examination was performed to measure the transverse diameter of the cerebellum, the height of the vermis, the area of the vermis, the perimeter of the vermis, and the area and perimeter of the cerebellum on transverse section. A Pearson correlation analysis was used to investigate the correlation between cerebellar measurements and gestational age.
Results:
In both AGA and SGA infants, all cerebellar measurements were positively correlated with gestational age (r=0.50-0.81, P<0.05). In AGA and SGA infants, there were no significant differences in the measurements between the 25-27+6 weeks, 28-30+6 weeks, and 31-33+6 weeks of gestational age subgroups (P>0.05), while in the 34-36+6 weeks and 37-40+6 weeks subgroups, the SGA infants had significantly lower measurements than the AGA infants (P<0.05).
Conclusions:
The SGA infants with a gestational age of <34 weeks have intrauterine cerebellar development similar to AGA infants, but those with a gestational age of ≥34 weeks have poorer intrauterine cerebellar development than AGA infants.
