[Hydrocephalus as a sequel of hemorrhage from ruptured cerebral aneurysm in light of CT investigations].

In the years 1985-1987 CT studies were carried out in 182 patients after haemorrhage from ruptured intracranial aneurysm. The study was carried out before surgery or the patients were not operated on for various reasons. Hydrocephalus was found in 33 cases, that is 18.2%. The patients were divided into subgroups depending on the time of CT after haemorrhage and on the state according the Hunt-Hess classification. Since only a small per cent of cases fell into the I and II categories of the classification, one may state that posthaemorrhagic hydrocephalus is connected usually with worse condition of the patient. Early hydrocephalus was relatively rare. In only a part of the cases CT was done on the first day after haemorrhage and it was difficult to say whether the presence and amount of blood in the basal cisterns and over the convexity contributed significantly to the development of hydrocephalus. However, in half the cases with intraventricular bleeding hydrocephalus was present.