Findings in TBI patients with radiographic versus no radiographic CT findings
| Parameter | CT (+) (N=49) | CT (−) (N=51) | p Value |
|---|---|---|---|
| Mean right ONSD (SD)* | 0.54 (0.08) | 0.51 (0.11) | 0.14 |
| Mean left ONSD (SD)* | 0.54 (0.09) | 0.52 (0.09) | 0.26 |
| Mean sheath diameter (bilateral; SD) | 0.54 (0.71) | 0.52 (0.09) | 0.15 |
| PI >1.3 | 35 (71.4) | 26 (51) | 0.04 |
| Mean PI | 1.44 (0.83) | 0.90 (0.24) | 0.002 |
| NPi <3.0 | 19 (38.8) | 9 (17.7) | 0.02 |
| Maximal pupil size, right (mean, SD) | 3.10 (1.4) | 2.8 (1.1) | 0.23 |
| Maximal pupil size, left (mean, SD) | 3.24 (1.5) | 2.7 (1.0) | 0.03 |
| Right pupil reactivity (mean, SD) | 10% (10%) | 15% (7.2%) | 0.004 |
| Left pupil reactivity (mean, SD) | 10.3% (10.8%) | 13.2% (6.5%) | 0.07 |
| Mean PSV, right (SD) | 97.7 (29.1) | 67.7 (7.4) | 0.02 |
| Mean PSV, left (SD) | 94.3 (23.5) | 71.2 (5.7) | 0.01 |
| Mean EDV, right (SD) | 28.9 (15.5) | 35.9 (14.2) | 0.08 |
| Mean EDV, left (SD) | 30.2 (19.1) | 34.8 (14.2) | 0.27 |
| EDV <30 (%) | 14 (28.6) | 9 (17.7) | 0.19 |
| EDV <40 (%) | 22 (57.9) | 27 (43.6) | 0.16 |
*The average of three sequential measurements.
EDV, end-diastolic velocity; NPi, neurological pupil index; ONSD, optic nerve sheath diameter; PI, pulsatility index; PSV, peak systolic velocity; TBI, traumatic brain injury.