[Normotensive hydrocephalus. Retrospective clinical study of 47 cases].

TL;DRAbstract

The clinical observation of 47 patients, undergoing surgery for "normotensive hydrocephalus" during the period January 1975 to January 1981 have been analysed retrospectively. The condition of half the patients improved following insertion of a cerebrospinal fluid bypass. Complications of varying degrees of severity were noted in 21 percent of cases. The correlation between the post-operative results and the clinical data was subjected to statistical analysis. Some factors appeared to have an important predictive value. These were the age, the absence of cortical atrophy on C.T. scan and the prolonged ventricular filling on cisternography. Other factors, although without statistical significance, seem to predict a better result: the existence of prior etiological data, presence of a frontal syndrome and evidence of periventricular hypodensity on C.T. scan. Finally, some other factors in our series appeared to have no influence on the prognosis. These were: duration of the preoperative

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