科研之友
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摘要
objective: to assess cognitive and behavioral development at preschool age of children born preterm and with low birth weight and raised in a developing country. methods: prospective cross-sectional study of 80 neonates born in a university hospital in southern brazil. neuropsychological assessment at age 4-5 years included the wechsler preschool and primary scale of intelligence (wppsi), conners%26apos; parent rating scale-revised, denver test and neurological examination. perinatal and early neuropsychomotor development information was collected from the database during follow-up. results were related to birth weight, sex and gestational age. results: wppsi scores were: total iq 88.00㊣16.96, verbal iq 89.72㊣16.72, and executive iq 88.12㊣15.71 for the group with less than 1,500 grams; and total iq 91.11㊣14.73, verbal iq 93.36㊣12.65, and executive iq 90.20㊣16.06 for the group between 1,500 and 2,500 grams. the best scores were obtained in tests that evaluated capacity of abstraction and symbolization, picture completion and common perception, in which only 5% and 6.3% of the children had abnormal results, respectively. the lowest scores were obtained in tests that evaluated visual-motor coordination and flexibility-speed of reasoning, in which 27.5% and 16.3% of the children had abnormal results, respectively. a total of 32.5% had abnormal results in the arithmetic tests. behaviors related to attention deficit/hyperactivity disorder (adhd) were observed in 48% of the sample. low score in the bayley mental scale and abnormal result in the denver test were significantly correlated to adhd (p = 0.017 and p = 0.004). abnormal results in the bayley mental scale (p %26lt; 0.001), denver test (p %26lt; 0.001) and neurological examination (p = 0.002) were associated with lower iq. conclusions: the results revealed an increased incidence of behavioral and cognitive disorders at preschool age.
