[The relation of electroencephalographic foci to vasospasms in patients with subarachnoid haemorrhage (author's transl)].

During a period of five years 74 patients with acute subarachnoid haemorrhage were controlled by angiography and EEG. 19 patients demonstrated angiographically proved intracranial aneurysms, seven intracerebral haematomas, three arteriovenous abnormalities. 25 patients had vasospasms. 34 patients showed foci in the EEG. Focal neurological abnormalities were in 43 patients. A correlation was established between EEG focus and vasospasm, focus and intracerebral haematoma. Further a relationship between focus and focal neurological abnormalities was detected. There was no correlation between EEG focus and aneurysm. It was claimed, that some foci in the EEG could be the result of persistent vasospasms.