Table 1 Scoring thresholds for determination of the most affected nerve of origin.
From: Optimized preoperative determination of nerve of origin in patients with vestibular schwannoma
Assessment | Objective | Threshold | Scoring | |
|---|---|---|---|---|
IVN | SVN | |||
vHIT | ||||
Anterior semicircular canal | Gain | < 0.7 | 0 | 1 |
Saccades | Present | 0 | 1 | |
Lateral semicircular canal | Gain | < 0.8 | 0 | 1 |
Saccades | Present | 0 | 1 | |
Posterior semicircular canal | Gain | < 0.7 | 2 | 0 |
Saccades | Present | 2 | 0 | |
VEMP | ||||
Cervical | ARcVEMP | < − 0.36 | 4 | 0 |
Ocular | ARoVEMP | < − 0.36 | 0 | 4 |
Maximum score: | 8 | 8 | ||
