Abstract
From the therapeutic point of view, it is an important problem whether the ventricles will be dilated following hypertensive intracerebral hemorrhage. For this reason, the authors made repeated observations of the ventricles on computed tomography in 70 patients with hypertensive intracerebral hemorrhage.
The bicaudate cerebroventricular index (CVI) proposed by Hahn and Rim in 1976 was measured to compare the size of the ventricles. Out of 70 patients, 33 showed ventricular hemorrhages and the remaining 37 did not show any abnormal high density area in the ventricles suggesting hemorrhage on computed tomography.
According to the location of hematoma in the ventricles, it was classified into the following three types;(Type I) The hematoma was localized only in the lateral ventricles,(Type II) The hematoma was found not only in the lateral ventricle but also in the third ventricle,(Type III) The hematoma was found in the lateral, third and fourth ventricles.
None of the patients without ventricular hemorrhage developed acute hydrocephalus. All patients belonging to Type I also did not show acute hydrocephalus on computed tomography. On the contrary, all patients belonging to Type III developed subsequent acute hydrocephalus, unless the ventricular drainage was performed. As to the patients belonging to Type II, some developed acute hydrocephalus following intracerebral hemorrhage.
