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. 2021 Jan 8;11:12. doi: 10.1038/s41598-020-79586-3

Table 1.

Patient demographics, treatment and outcome data.

Age (yrs., range, mean ± SD) 26–90, 59.0 ± 14.5
Sex (female/male) 51/31 62.2%/37.8%
WFNS grade
1 18 22.0%
2 20 24.4%
3 7 8.5%
4 24 29.3%
5 13 15.9%
Fisher grade
1 & 2 0 0
3 45 54.9%
4 37 45.1%
Aneurysm location
AcomA 31 33.8%
PCA 2 2.4%
ICA (w/o PcomA & AchoA) 5 6.1%
AchoA 3 3.7%
PcomA 14 17.1%
MCA 21 25.6%
VA/PICA 4 4.9%
BA 2 2.4%
Aneurysm treatment
Clipping 46 56.1%
Coiling 34 41.5%
Conservative 2 2.4%
Hemicraniectomy
Primary 21 25.6%
Secondary 5 6.1%
Time to admission
 ≤ 24 h 76 92.7%
 > 24 h 6 7.3%
Time to aneurysm occlusion1
 ≤ 24 h 61 76.3%
24–72 h 11 13.8%
 > 72 h 8 10.0%
Meningitis2 8 9.8%
CSF shunt 26 31.7%
Outcome at discharge
mRS 0–2 23 28.0%
mRS 3–6 59 72.0%

1Excluding 2 cases managed conservatively.

2Culture-positive meningitis.

AchoA anterior choroidal artery, AcomA anterior communicating artery, BA basilar artery, CSF cerebrospinal fluid, h. hours, ICA internal carotid artery, MCA middle cerebral artery, mRS modified Rankin scale, PCA posterior cerebral artery, PcomA posterior communicating artery, PICA posterior inferior cerebellar artery, SD standard deviation, VA vertebral artery, WFNS World Federation of Neurosurgical Societies, yrs. years.