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Table 1
Surgical risk as related to time of intervention in the repair
of intracranial aneurysms ( 3 )
Grade
Description
1
Asymptomatic, mild headache, slight nuchal rigidity
2
Moderate-to-severe headache, nuchal rigidity, and/or
cranial nerve palsy
3
Drowsiness, mild disorientation, and/or mild focal
neurological defi cits
4
Stupor and/or moderate-to-severe hemiparesis and/or
dysphasia
5
Coma, decerebrate posturing, acute midbrain syndrome
Table 2
Grading of clinical state after aSAH according to the World
Federation of Neurological Surgeons (WFNS)
Grade
Description
1
Glasgow Coma Score (GCS) of 15, motor defi cit absent
2
GCS of 13-14, motor defi cit absent
3
GCS of 13-14, motor defi cit present
4
GCS of 7-12, motor defi cit absent or present
5
GCS of 3-6, motor defi cit absent or present
Table 3
Modifi ed CT-based Fisher's grading scale for assessment
of aSAH ( 4 )
0
No blood present: No blood can be detected on CT
1
Mild: Thin localized layer of blood
2
Moderate: Thick layers of blood in two of the three subarachnoid
cisterns, or in one, and on the cortical surface
3
Severe: Extended diffuse SAH with thick layers of blood in all
arachnoid cisterns or in two and on cortical surface.
Intracerebral hematoma >2 cm
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