Therefore, we used the World Federation of Neurological Surgeons (WFNS) grading scale for assessing the clinical grade. WFNS is based on the Glasgow Coma Scale (GCS) and acknowledges the presence of a major focal neurological deficit (aphasia and/or hemiparesis or hemiplegia); Table 1. In WFNS grade 1 the GCS is 15 and there is no motor deficit. In grade 2, there is a slight reduction in GCS to 14–13 but no motor deficit. In grade 3, the GCS is also 14–13 but there exists a motor deficit. In grades 4 and 5, there may, or may not be a motor deficit, but GCS is reduced from 12 to 7 in grade 4 and as low as 3–6 in grade 5 (Table 1).