Table 1.
Patient demographics and clinical characteristics (N=345).
| All patients (N = 345) | No vasospasm (N = 127) | Vasospasm (N = 218) | p-value | |
|---|---|---|---|---|
| Age in years (mean (SD)) | 54.5 (13.4) | 57.2 (15.2) | 52.9 (11.9) | 0.004 |
| Sex (n (%)) | 0.325 | |||
| Female | 234 (68) | 91 (72) | 143 (66) | |
| Male | 111 (32) | 36 (28) | 75 (34) | |
| Race (n (%)) | ||||
| White | 269 (78) | 92 (72) | 177 (81) | 0.203 |
| Black | 50 (15) | 23 (18) | 27 (12) | |
| Other | 26 (8) | 12 (10) | 14 (7) | |
| Tobacco use (n (%)) | 0.062 | |||
| Yes | 195 (57) | 63 (50) | 132 (61) | |
| No | 150 (43) | 64 (50) | 86 (39) | |
| Fisher grade (n (%)) | 0.003 | |||
| 1 | 6 (2) | 5 (4) | 1 (1) | |
| 2 | 29 (8) | 13 (10) | 16 (7) | |
| 3 | 57 (17) | 29 (23) | 28 (13) | |
| 4 | 253 (73) | 80 (63) | 173 (79) | |
| Hunt-Hess grade (n (%)) | 0.035 | |||
| 1 | 24 (7) | 10 (8) | 14 (6) | |
| 2 | 81 (24) | 40 (32) | 41 (19) | |
| 3 | 94 (27) | 35 (28) | 59 (27) | |
| 4 | 94 (27) | 25 (20) | 69 (32) | |
| 5 | 52 (15) | 17 (13) | 35 (16) | |
| Initial treatment (n (%)) | 0.283 | |||
| Endovascular | 277 (81) | 107 (85) | 170 (78) | |
| Open surgery | 59 (17) | 16 (13) | 43 (20) | |
| Other | 7 (2) | 3 (2) | 4 (2) | |
| Nimodipine use (n (%)) | 0.788 | |||
| Yes | 342 (99) | 126 (99) | 216 (99) | |
| No | 3 (1) | 1 (1) | 2 (1) | |
| Maximum PaO2 (mean (SD)) | 218.8 (117.3) | 195.4 (101.0) | 232.4 (124.1) | 0.005 |
| Minimum PaCO2 (mean (SD)) | 34.1 (6.5) | 34.8 (6.7) | 33.7 (6.3) | 0.100 |