Effect of Grade I and II intraventricular hemorrhage on visuocortical function in very low birth weight infants.
作者： Anthony M. Norcia , William V. Good , Chuan Hou , Mark W. Pettet , Ashima Madan
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摘要: The neurological outcome for infants with Grade I/II intraventricular hemorrhage (IVH) is debated. aim of this study was to determine whether very low birth weight (VLBW, <1500 g) have altered visuocortical activity compared no IVH. We assessed the quantitative swept parameter visual evoked potential (sVEP) responses by three different stimuli. Data from 52 VLBW were data 13 I or II IVH, enrolled at 5–7 months corrected age. Acuity thresholds and suprathreshold response amplitudes compared. Grating acuity (GA), contrast sensitivity (CS) vernier (VA) each worse in IVH groups (8.24 cpd group vs. 13.07 GA; 1.44% 1.18% CS 1.55 arcmin 0.58 VA). slopes amplitude VA significantly lower infants. spatial frequency tuning function shifted downward on axis, without a change slope. These results indicate that are associated deleterious effects cortical vision development function.
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