SciELO - Scientific Electronic Library Online

 
vol.85 issue1Influence of programmed physical activity on body composition among adolescent studentsReceiver operating characteristic (ROC) curves to identify birth weight cutoffs to predict overweight in Mexican school children author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Jornal de Pediatria

Print version ISSN 0021-7557

Abstract

ESPIRITO SANTO, Júlia L. do; PORTUGUEZ, Mirna W.  and  NUNES, Magda L.. Cognitive and behavioral status of low birth weight preterm children raised in a developing country at preschool age. J. Pediatr. (Rio J.) [online]. 2009, vol.85, n.1, pp. 35-41. ISSN 0021-7557.  http://dx.doi.org/10.1590/S0021-75572009000100007.

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' 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 < 0.001), Denver test (p < 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.

Keywords : ADHD; low birth weight; prematurity; cognition; behavior.

        · abstract in Portuguese     · text in English | Portuguese     · pdf in English | Portuguese