Table 2.
Characteristics of the study population on admission to the ICU
| Parameter | All (N = 55) |
Group 1 (N = 24) |
Group 2 (N = 31) |
p |
|---|---|---|---|---|
| Age (years) |
58.8 ± 1.9 (25–83) |
52.9 ± 2.0 (25–82) |
63.3 ± 2.4 (30–83) |
0.005 |
| Gender (F/M) | 36/19 | 17/7 | 19/12 | 0.460 |
| APACHE II |
13.8 ± 0.9 (2–29) |
9.6 ± 0.8 (2–21) |
17.1 ± 1.2 (4–29) |
< 0.001 |
| WFNS scale [n (%)] | 0.020 | |||
| I–III | 36 (65) | 20 (83) | 16 (52) | |
| IV–V | 19 (35) | 4 (17) | 15 (48) | |
| Initial CT Fisher scale (subarachnoid blood) [n (%)] | 0.002 | |||
| Grade I (none) | 0 | 0 | 0 | |
| Grade II (diffuse only) | 12 (22) | 10 (42) | 2 (6) | |
| Grade III (clot or thick layer) | 15 (27) | 7 (29) | 8 (26) | |
| Grade IV (diffuse or none, with cerebral or ventricular blood) | 28 (51) | 7 (29) | 21 (68) | |
| GCS |
11.6 ± 0.54 (4–15) |
13.6 ± 0.4 (5–15) |
10.0 ± 0.8 (4–15) |
< 0.001 |
| Hunt and Hess scale, (the severity of subarachnoid hemorrhage) [n (%)] | 0.011 | |||
| Grade I | 10 (18) | 8 (33) | 2 (6) | |
| Grade II | 8 (15) | 4 (17) | 4 (13) | |
| Grade III | 15 (27) | 8 (33) | 7 (23) | |
| Grade IV | 10 (18) | 3 (15) | 7 (23) | |
| Grade V | 12 (22) | 1 (4) | 11 (35) | |
| Treatment [n (%)] | 0.227 | |||
| Neurosurgical clipping | 23 (42) | 9 (38) | 14 (45) | |
| Endovascular embolization | 27 (49) | 14 (58) | 13 (42) | |
| Conservative | 5 (9) | 1 (4) | 4 (13) | |
Data are presented as mean± standard error (min–max), unless other stated; CT, computed tomography; GCS, Glasgow Coma Score; LOS, length of stay; WFNS, the World Federation of Neurological Surgeons; p value represents a comparison between groups