Table 1.
Caloric vestibular test results of each case.
| Timingb | RCa | RWa | LCa | LWa | VR% | DP% | |
|---|---|---|---|---|---|---|---|
| Case 1 | 0 | 16 | 12 | 14 | 20 | 9 Right | 16 Left |
| Case 2 | 0 | 5 | 7 | 6 | 8 | 7 Right | 0 |
| Case 2 | 16 Months | 19 | 32 | 30 | 21 | 0 | 22 Right |
| Case 3 | 0 | 23 | 17 | 11 | 10 | 31 Left | 8 Right |
| Case 3 | 7 Months | 20 | 32 | 20 | 36 | 3 Right | 3 Left |
All studies performed with water caloric irrigation using ICS Chartr VNG, now GN Otometric (Schaumburg, IL).
aPeak slow phase velocity in degrees/second of caloric-induced nystagmus.
bTime 0 = initial presentation. Subsequent studies designated as months subsequent to presentation.
RC, right cool irrigation, LC, left cool irrigation, RW, right warm irrigation, LW, left warm irrigation; VR, vestibular response asymmetry as a percentage using Jongkees formula; DP, directional preponderance which reflects the direction (rightward versus leftward) of the bithermal caloric-induced nystagmus expressed as a percentage using Jongkees formula.