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Abstract
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Mina Takahashi, MA1, Yukiko Morioka, PhD1, Satoshi Aeba, MD2, Takeshi Enomoto ,BA3, Arata Oiji, MD, PhD4
1: Department of Clinical Psychology, Taisho University
2: Yamagata Prefectural Central Hospital
3: Center of Development Support and Study
4: Graduate School of Medical Science, Kitasato University
Introduction
With the recent progress of assisted reproductive technology, survival rate of very low birth weight infant (VLBWI) and extremely low birth weight infant (ELBWI) have been drastically improving. Interest of researchers and clinicians has turned to psychosocial developmental aspects of VLBW/ELBW children.
Objectives
The aim of this study was to investigate the characteristics of cognitive abilities among VLBW/ELBW children in 6 and 9 year old.
Methods
The subjects were 48 VLBW/ELBW)children (25 boys and 23 girls) aged 6 and 9 years born at Yamagata Prefectural Central Hospital (YPCH) from 2000 to 2005. the average birth weight is 1027.9±315.3g and Gestational age is 28.4±3.1 weeks.Cognitive development was evaluated by scores on the WISC-III.
Results
There was no significant difference between the results of WISC-III in boys and that in girls.
At the age of 6, boys WISC-Ⅲscore VIQ:111.9, PIQ:93.5, FIQ:103.1. The girls score VIQ:109.7, PIQ:99.0, FIQ:105.5. At the age of 9, boys score VIQ:112.2 PIQ:95.0,FIQ:104.4. The girls score VIQ:107.0、PIQ:100.2、FIQ:104.4.
The 6 and 9 year old boys and girls showed PIQ of WISC-III was significantly lower than VIQ (p<.01).
The boys and girls showed of 6 and 9 PO of Index Scores was significantly lower than VC and FD (p<.01).
The results of PIQ, VIQ, FIQ at the age of 6 correlated with the results of PIQ, VIQ, FIQ of 9 years old(p<.01). There was no correlation in the Index Scores.
The boys VLBW subjects showed significantly higher scores in VIQ and FIQ and VC and FD than the ELBW subjects at the age of 6.The girls VLBW subjects showed significantly higher scores in VIQ at the age of 6band FIQ and VC and FD than the ELBW subjects at the age of 9.
Conclusions
These results suggested that ELBW children show more problems in cognitive abilities and behaviors than VLBW children. Clinicians should pay more attentions to cognitive developments of ELBW children.
This result shows that cognitive ability of early childhood is expected to predict later development.
These results suggested that necessary to consider support according to the cognitive characteristics of VLBWI / ELBWI.
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