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- 田角 勝
- 昭和大学医学部小児科
書誌事項
- タイトル別名
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- Evaluation of the LVW/HW ratio in preterm and term infants with real-time ultrasonography.
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説明
Real-time ultrasonography was used to make exact measurements from lateral wall of the body of the lateral ventricle to the falx (LVW) and from the innertable of the calvalium to the falx (HINT) in 205 infants of varying gestational ages. A ratio of lateral ventricular width to hemispheric width (LVW/HW) could then be calculated.<BR>The normal LVW/HW ratio was 0.281±0.033 (mean±SD) between 0 and 1 day, and increased up to 2 days (0.301±0.033). No remarkable changes were seen thereafter. LVW/HW ratio was higher in less mature infants at the same conceptional age. In among infants with intraventricular hemorrhage (grade I and II), no remarkable change was noted in the LVW/HW ratio (0.299±0.042). Infants with intraventricular hemorrhage of grade ifi and IV showed significantly higher LVW/HW ratios than normal infants. In infants of post-hemorrhagic hydrocephalus, the LVW/HW ratio was 0.36-0.58. It was concluded from these data that values higher than 0.35 indicated abnormal dilatation of lateral ventricles. However, early detection of hydrocephalus or ventricular dilatation was not possible in premature infants with this criterion, because the bodies of lateral ventricles were not dilated at the early stage of these pathological, conditions.
収録刊行物
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- 脳と発達
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脳と発達 16 (6), 450-455, 1984
THE JAPANESE SOCIETY OF CHILD NEUROLOGY
