慢性硬膜下血腫術後再発例の対策—Ommaya tube設置法

Treatment for Reaccumulation of Chronic Subdural Hematoma: Setting an Ommaya tube

I．はじめに

　慢性硬膜下血腫に対する穿頭術は開頭術に劣らぬものと評価され，一般に行われている．しかし術後血腫の再貯留をきたすことは稀ではなく，多くは38％という報告もある^2,9,13）．これに対して外ドレナージを行うなどの対策が試みられているが^{1,2,4,8,12）}，いずれも充分とはいい難い．

　われわれは穿頭血腫除去後にOmmaya tube（以下OT）を設置することにより良好な成績を得たので報告し，考察を加える．

The rate of postoperative recurrences of chronic subdural hematomas is high. Several methods have been advocated, but each one remains controversial.

We proposed a simple method of setting an Ommaya tube after burr-hole evacuation. The re-servoir was placed in the subcutaneous space, the tip of the tube was placed in the subdural space. The reservoir was punctured with a needle. thereby allowing aspiration of fluid from the subdural space.

Sixty one cases of chronic subdural hematomas were operated by simple burr-hole evacuation.