Abstract
A follow up study on ICP was carried out in 6 cases of hydrocephalus within normal head circumference during the period 8-9 months after birth. There were no shunting operations. An, abnormal plateau like wave recorded in 2 cases with myelomeningocele during the follow-up period. In other cases, almost normal baseline pressure was recorded without abnormal pressure wave and all these cases showed favorable morbity (function). These results indicate that the importance of a follow-up study on ICP for months after birth in such cases as hydrocephalus without large head circumference: Furthermore, shunting operation should be recommended in cases showing abnormal pressure wave during the follow-up period.