5 Grades of SAH (Subarachnoid Hemorrhage)Subarachnoid hemorrhage (SAH) implies the presence of blood within the subarachnoid space from some pathologic process (traumatic and nontraumatic hemorrhages).
Grade I - Mild headache with or without meningeal irritation
Grade II - Severe headache but nonfocal examination, with or without mydriasis
Grade III - Mild alteration in neurologic examination, including mental status
Grade IV - Obviously depressed level of consciousness or focal deficit
Grade V - Patient either posturing or comatose