圧可変式シャントシステムの使用経験

Ventriculoperitoneal Shunts with the Use of Pressure-adjustable Valve in the Management of Hydrocephalus

I．はじめに

　水頭症の病態は症例によって異なるうえ，従来のシャントバルブは圧固定式であるため、設定圧を非侵襲的に変更することは困難である．今回，頭皮上で設定圧を随時容易に変更できるSophy圧可変式バルブを使用する機会があったので，その有用性と問題点について報告する．

Abstract

Sixteen patients with hydrocephalus of varied etiolo-gy who underwent ventriculo-peritoneal shunts utilizing pressure-adjustable valves were reviewed, and the use-fulness of the pressure-adjustable valve in the manage-ment of hydrocephalus was evaluated. Before shunting, all patients had CT evidence of hydrocephalus with Evans' Index greater than 30%. High-, medium- and low-pressure settings were chosen in 3, 11 and 2 pa-tients respectively, according to the CSF pressure as measured during lumber puncture or ventricular drain-age.