Aqueductal stroke volume, peak velocity, and aqueductal area in patients at all assessment timesa
| Patient Baseline (n = 21) | Patient Preop (n = 16) | Patient Postop (n = 17) | P Value | |
|---|---|---|---|---|
| ACSV (μL) | 103.5 (69.8–142.8) | 94.8 (81–241) | 88 (51.8–173.3) | <.05b |
| Peak velocity (mm/s) | 103 (68.5–166.5) | 127 (72.5–154.8) | 108 (71.5–146.5) | NS |
| Net flow (μL) | −1.6 (−19–14) | −1.8 (−14.5–10.8) | 0 (−12.5–2.1) | NS |
| Aq area (mm2) | 22 (19–25) | 22.5 (19.3–25.8) | 24 (20.5–25.5) | NS |
Note:—Preop indicates preoperative; Postop, postoperative; Aq, aqueductal; NS, not signifiicant.
↵a Data are median with interquartile range in parentheses.
↵b Wilcoxon signed rank test. Significant difference between baseline and postoperative investigation and between preoperative and postoperative investigation. Comparisons between baseline and preoperative measurements were all nonsignificant.