[Diagnosis of progressive open internal hydrocephalus in patients after cranio-cerebral injuries and subarachnoid hemorrhage].

Late internal hydrocephalus has been diagnosed in 68 (44%) out of 154 patients treated for the ruptured cerebral aneurysms, and in 37 (31%) out of 120 patients, who underwent cranio-cerebral trauma. To establish the indications for shunts, CT scans of the skull, tomoventriculography, and infusion tests have been carried out in 38 patients. It has been found, that increased transparency of the areas below cerebral ependyma, the lack of cerebral cortex sulci, and imaging of the temporal horns together with internal hydrocephalus in CT scans indicate an active process and are indications to shunting. If there are no signs of active process in CT scans despite of the presence of hydrocephalus, tomoventriculography should be performed to establish more fully the indications to shunting.