Cognitive abilities and school performance of extremely low birth weight children and matched term control children at age 8 years: A regional study

Saigal, Saroj; Szatmári, Péter; Rosenbaum, Peter; Campbell, Dugal; King, Susanne

doi:10.1016/s0022-3476(05)80043-5

Cited by 414 publications

(247 citation statements)

References 24 publications

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“…5 Figure 3 displays the growth in FOC by medical risk level. Rates of growth in FOC were similar in all risk groups.…”

Section: Predictors Of Changes In Head Circumferencementioning

confidence: 99%

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Patterns of Physical and Neurologic Development in Preterm Children

et al. 2002

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“…5 Figure 3 displays the growth in FOC by medical risk level. Rates of growth in FOC were similar in all risk groups.…”

Section: Predictors Of Changes In Head Circumferencementioning

confidence: 99%

“…4,5 The limitation of these studies is their focus on one point in time, which provides only a ''snap shot'' of a broader growth and developmental movie. Because growth and development are processes that occur over long periods of time and are associated with periods of acceleration and deceleration, a more complex analysis is appropriate.…”

Section: Introductionmentioning

confidence: 99%

Patterns of Physical and Neurologic Development in Preterm Children

et al. 2002

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“…Between 5 and 15% of prematurely born children develop cerebral palsy, and 30 to 50% will have impaired academic achievement and/or behavioral disorders requiring additional educational resources (Hack and Fanaroff, 1999;Hack et al, 2002;Saigal et al, 1991;Whitaker et al, 1997;Whitfield et al, 1997). The nature of the cerebral lesion predisposing the prematurely born child to such long-term neurodevelopmental difficulties is not well understood, as the association between abnormalities detected on conventional MRI studies and cognitive neurodevelopmental outcome is relatively weak (Cooke and Abernethy, 1999).…”

Section: Introductionmentioning

confidence: 99%

Diffusion MR imaging characteristics of the developing primate brain

et al. 2005

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Diffusion-based magnetic resonance imaging holds the potential to noninvasively demonstrate cellular-scale structural properties of brain. This method was applied to fixed baboon brains ranging from 90 to 185 days gestational age to characterize the changes in diffusion properties associated with brain development. Within each image voxel, a probability-theory-based approach was employed to choose, from a group of analytic equations, the one that best expressed water displacements. The resulting expressions contain eight or fewer adjustable parameters, indicating that relatively simple expressions are sufficient to obtain a complete description of the diffusion MRI signal in developing brain. The measured diffusion parameters changed systematically with gestational age, reflecting the rich underlying microstructural changes that take place during this developmental period. These changes closely parallel those of live, developing human brain. The information obtained from this primate model of cerebral microstructure is directly applicable to studies of human development. D 2004 Elsevier Inc. All rights reserved.Keywords: Magnetic resonance imaging; Diffusion anisotropy; Baboon brains; Brain development IntroductionMagnetic resonance imaging (MRI) is increasingly utilized in human and animal studies to provide information relating to cerebral injury and development in the newborn. Diffusion MRI, in particular, is being applied to assess brain development (Huppi et al., 1998;Neil et al., 2002;Partridge et al., 2004;Rutherford et al., 2004). Diffusion MRI provides information about the directional dependence of water displacements due to diffusion. This, in turn, reflects underlying tissue microstructure. In white matter, for example, water moving parallel to myelinated fibers can move within or between myelin layers, without crossing membranes. Water moving orthogonal to fibers, on the other hand, must either cross myelin layers or go around them. As a result, water displacements are smaller when measured orthogonal to myelinated fibers than when measured parallel to them. Thus, water diffusion in myelinated white matter is anisotropic. The regional changes in diffusion anisotropy within the developing white matter of the newborn brain have been well appreciated for some time (Huppi et al., 1998;Neil et al., 1998).Diffusion anisotropy has also been described within cerebral cortical gray matter in the developing human brain. Anisotropy is high early in development, with the preferred displacement direction oriented radially with respect to the cortical surface (Maas et al., 2004;Mori et al., 2001;Neil et al., 1998). This has been attributed to the orientation of radial glial fibers and the apical dendrites of pyramidal cells. As the brain matures, the magnitude of cortical diffusion anisotropy decreases (McKinstry et al., 2002;Mori et al., 2001), reflecting a loss in orientational coherence of cortical structures that restrict diffusion. This may be due to the elaboration of pyramidal cell basal dendrites, additio...

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“…Apesar da maioria dos estudos sobre desenvolvimento serem realizados em populações selecionadas de países desenvolvidos (Saigal et al,1991;Vohr, 1991), pesquisas realizadas em países do terceiro mundo têm mostrado importante associação entre o desenvolvimento neuropsicomotor da criança, seu estado nutricional e a situação sócio-econômica da família (Grantham McGregor et al, 1982). Mesmo com as evidências da importância de programas de intervenção precoce (Simeonsson et al, 1982) e o sucesso dessas intervenções em crianças de risco em países em desenvolvimento (Grantham McGregor et al, 1987), poucos avanços têm ocorrido nesta área.…”

Section: Introductionunclassified

Desenvolvimento neuropsicomotor aos 12 meses de idade em uma coorte de base populacional no Sul do Brasil: diferenciais conforme peso ao nascer e renda familiar

et al. 1996

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Os 5.304 nascimentos hospitalares ocorridos em 1993 em Pelotas, Rio Grande do Sul, foram investigados. Além da avaliação perinatal de todos os recém-nascidos, 20% (1.400 crianças) foram acompanhadas, por meio de visitas domiciliares, durante o primeiro ano. Nestas visitas, era realizado o Teste de Denver II para avaliação do desenvolvimento. Aos 12 meses, das 1.362 crianças avaliadas, 463 (34%) apresentaram teste sugestivo de atraso no desenvolvimento. Este resultado esteve associado com a renda familiar, tendo sido duas vezes mais frequente entre as crianças de famílias mais pobres do que entre as de melhor situação sócio-econômica (p<0,001). Falha no teste também esteve inversamente associada com o peso de nascimento, com as crianças de baixo peso apresentando um risco três vezes maior do que aquelas com peso ao nascer igual ou superior a 2.500g (p<0,001). Além disso, crianças que nasceram com peso inferior a 2.000g apresentaram um risco três vezes maior do que aquelas com peso entre 2.000g e 2.499g. Os resultados indicam que o peso ao nascer e a situação sócio-econômica estão fortemente associados com potenciais atrasos no desenvolvimento de crianças aos 12 meses de idade. Apontam, também, para a necessidade de triagem sistemática do desenvolvimento e programas de intervenção precoce em grupos de risco.

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Cognitive abilities and school performance of extremely low birth weight children and matched term control children at age 8 years: A regional study

Cited by 414 publications

References 24 publications

Patterns of Physical and Neurologic Development in Preterm Children

Patterns of Physical and Neurologic Development in Preterm Children

Diffusion MR imaging characteristics of the developing primate brain

Desenvolvimento neuropsicomotor aos 12 meses de idade em uma coorte de base populacional no Sul do Brasil: diferenciais conforme peso ao nascer e renda familiar

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