Table I.

Baseline characteristics of the patients included in the present study.

Parameters	All patients, n=34 (100%)	Group A, n=17 (50%)	Group B, n=17 (50%)	P-value
Age, years	54.4±18	56.0±16	52.8±20	0.679
Sex (male), n (%)	18 (52.9)	10 (29.4)	8 (23.5)	0.170
GCS at admission	13.1±2	12.6±2	13.7±1	0.201
Procedure, n (%)
Surgical	18 (52.9)	10 (29.4)	8 (23.5)	0.492
Endovascular	16 (47.1)	7 (20.5)	9 (26.4)
MAP
% Reduction from baseline	7.4±7	6.7±7	8.2±8	0.742
Duration, min	7.7±11	6.0±10	9.4±13	0.440
Hunt and Hess grade, n (%)
I	8 (23.5)	3 (8.8)	5 (14.7)	0.419
II	15 (44.1)	4 (11.7)	11 (32.3)	0.016
III	7 (20.5)	6 (17.6)	1 (2.9)	0.034
IV	3 (8.8)	3 (8.8)	0 (0)	0.070
V	1 (2.9)	1 (2.9)	0 (0)	0.310
Modified Fisher grade, n (%)
I	8 (23.5)	3 (8.8)	5 (14.7)	0.419
II	16 (47.0)	5 (14.7)	11 (32.3)	0.039
III	7 (20.5)	6 (17.6)	1 (2.9)	0.034
IV	3 (8.8)	3 (8.8)	0 (0)	0.070
Aneurysm location, n (%)
ACoA	6 (17.6)	3 (8.8)	3 (8.8)	NS
MCA	12 (35.2)	4 (11.7)	8 (23.5)	0.151
PICA	2 (5.8)	1 (2.9)	1 (2.9)	NS
Pcom	5 (14.7)	3 (8.8)	2 (5.8)	0.628
ICA	9 (26.4)	6 (17.6)	3 (8.8)	0.244
CT perfusion (white matter) parameters
CBFmean ± SD (mlblood/100 gtissue)	19.4±11	24.0±7	14.7±12	0.011
CBVmean ± SD (mlblood/100 gtissue)	1.4±1	1.6±0.	1.2±1	0.042
MMTmean ± SD (sec)	4.3±1.5	4.6±1	3.9±1	0.055

GCS, Glasgow coma scale; MAP, mean arterial pressure; ACoA, anterior communicate artery; MCA, middle cerebral artery; PICA, posterior inferior cerebral artery; Pcom, posterior communicating artery; ICA, internal carotid artery; CT, computed tomography; MMTmean, mean value of mean transit time; CBVmean, mean value of cerebral blood volume; CBFmean, mean value of cerebral blood flow; NS, not significant.