Gerber et al developed a grading scale for a patient with subarachnoid hemorrhage (SAH). This can help to identify high risk patients who may require more aggressive management. The authors are from Southampton General Hospital in England.
Parameters:
(1) interhemispheric blood on CT scan
(2) basally located blood on CT scan
(3) intraventricular blood on CT scan
(4) intracerebral blood on CT scan
(5) Cooperative Aneurysm Study Neurologic Scale
Parameter |
Finding |
Points |
interhemispheric blood |
absent |
0 |
|
present |
2 |
basal blood |
absent |
0 |
|
present |
2 |
intraventricular blood |
absent |
0 |
|
present |
2 |
intracerebral blood |
absent |
0 |
|
present |
2 |
CASN scale |
1 to 3 (alert and oriented, may have cranial nerve palsy or neurologic deficit) |
-1 |
|
4 (drowsy without major deficit, with or without disorientation) |
0 |
|
5 or 6 (drowsy with major deficit or coma) |
5 |
total score =
= SUM(points for all 5 parameters)
Interpretation:
• minimum score: -1
• maximum score: 13
• The higher the score the more severe the subarachnoid hemorrhage.
Total Score |
Risk |
-1 |
low |
0,1 or 2 |
intermediate |
>= 3 |
high |
Specialty: Neurology