S-100 Protein in cerebrospinal fluid after aneurysmal subarachnoid haemorrhage

The concentration of S-100 protein measured in ventricular cerebrospinal fluid (CSF) from 32 patients with subarachnoid haemorrhage (SAH) during the acute phase was related to features on admission such as the Hunt and Hess neurological scale and the amount of blood at the first computed tomography (CT). The S-100 values were also related to functional outcome assessed by the Glasgow outcome scale (GOS) at 12 months. Twenty-two patients were re-examined more than 2 years after the SAH, and the initial S-100 values were related to signs of structural brain damage at CT and single photon emission computed tomography (SPECT) and to the results of neuropsychological evaluation (NPE). NPE included standardized tests for memory functions, intellectual functions, visuo-spatial abilities, sensory-motor functions, and concept formation. Life-adjustment was assessed by two separate questionnaires. Tests for agnostic dysfunction and the Western aphasia battery test (WABT) were also performed.