AI Article Synopsis

  • Periventricular leukomalacia is linked to visual impairments in premature children and the effect of white-matter injury on early visual function is explored.
  • Two visual-gaze scores were developed to study this association in 93 premature neonates under 34 weeks gestational age.
  • Higher postmenstrual age correlated with better gaze scores, while infants with moderate or severe white-matter injury had significantly lower scores, indicating that white-matter injury adversely affects visual function even before reaching term.

Article Abstract

Periventricular leukomalacia is a risk factor for visual impairment in children born prematurely. The impact of diffuse white-matter injury, as detected on magnetic resonance imaging, on early visual function is unknown. We developed two 5-point visual-gaze scores to analyze the association between this clinical assessment and white-matter injury in 93 premature neonates <34 weeks of gestational age at birth. Older postmenstrual age was associated with higher values of the two gaze scores. Infants with moderate or severe white-matter injury had lower scores than their peers without white-matter injury (0.41 points, 95% confidence interval of 0.13-0.69 for visual fixation score; and 0.70 points, 95% confidence interval of 0.30-1.10 for conjugate score, P < 0.005). Using the results from both scales, a score of >or=9 in an infant examined at >or=36 weeks postmenstrual age predicted normal white matter on magnetic resonance examination, with a sensitivity of 84% and a specificity of 100%. These preliminary findings suggest that white-matter injury affects visual function even before term equivalent postmenstrual age.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2203614PMC
http://dx.doi.org/10.1016/j.pediatrneurol.2007.08.019DOI Listing

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