Abstract
In this paper we report on a case in which we at first experienced very good results after neck clipping of an aneurysm in the Middle Cerebral Artery (MCA), with sufficient bloodflow and no neurological deficit; but after 48 hours the main trunk of the MCA was scddenly blocked by the sliding of the clip.
In addition, we report some cases of slipping out of the clip. One is that of a 55 year-old man, attacked by arachnoidal hemorrhage and having 2.5cm in diameter. He had no neurological deficit and no angiospasm in CAG. Thirty-one days later we operated for clipping at Grade I of Hunt & Hess. Two days passed well and suddenly the patient lost consciousness because of obstruction of the MCA by slipping out of clip and died of brain edema.
In addition to this case we report two similar cases involving a 60 year-old man and 39 year-old man. As a result of these experiences we made a new and better clip with a hook on the blade to prevent slipping out and have obtained quite good results.
