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
