Table 3.
Average CSF output in ET-1, spasm, and DCI groups
| Average exposure rate determination time | Group | N | Average CSF volume (ml) |
P value | ||
|---|---|---|---|---|---|---|
| Mean | SD | |||||
| 48 h before angiographic spasm | ET-1 | Low | 19 | 154.46 | 74.89 | 0.12 |
| High | 21 | 119.16 | 67.01 | |||
| Spasm | No | 24 | 124.97 | 72.79 | 0.25 | |
| Yes | 16 | 152.37 | 70.30 | |||
| 72 h before angiographic spasm | ET-1 | Low | 19 | 146.53 | 76.21 | 0.33 |
| High | 21 | 124.29 | 65.59 | |||
| Spasm | No | 24 | 123.85 | 69.53 | 0.23 | |
| Yes | 16 | 151.36 | 71.68 | |||
| 72 h before clinical spasm | ET-1 | Low | 21 | 115.45 | 51.36 | 0.39 |
| High | 23 | 128.82 | 49.67 | |||
| DCI | No | 11 | 107.40 | 49.68 | 0.30 | |
| Yes | 26 | 127.00 | 52.06 | |||