Prediction of Short-Term Outcome in Acute Superior Vestibular Nerve Failure: Three-Dimensional Video-Head-Impulse Test and Caloric Irrigation
Table 2
Quantitative data.
Variable
Group I
Group II
Group III
Significant differences
mean ± std
mean ± std
mean ± std
I versus II
I versus III
II versus III
Basic
Age [years]
64 ± 17
63 ± 17
53 ± 16
Days to admission
2.6 ± 2.0
3.2 ± 2.6
2.7 ± 1.9
Days in clinic
3.6 ± 1.5
5.1 ± 3.0
6.0 ± 1.5
×
DHI
32 ± 20
39 ± 29
50 ± 27
Tests
SVV [°]
0.3 ± 1.65
3.3 ± 5.2
7.1 ± 5.3
×
OT [°]
ipsi
7.5 ± 2.9
13.2 ± 7.1
15.8 ± 7.6
×
OT [°]
contra
6.6 ± 4.3
1.1 ± 8.8
−3.5 ± 6.2
×
SPN [°/s]
−0.6 ± 3.5
−3.3 ± 4.2
−6.4 ± 5.7
×
Caloric
UW [%]
41 ± 20
48 ± 16
63 ± 25
×
DP [%]
34 ± 39
83 ± 61
152 ± 82
×
vHIT
Gain LC
ipsi
0.97 ± 0.16
0.65 ± 0.29
0.36 ± 0.18
×
×
Gain LC
contra
0.96 ± 0,12
1.03 ± 0.23
0.87 ± 0.17
Gain AC
ipsi
0.93 ± 0.15
1.02 ± 0.21
0.53 ± 0.18
×
×
Gain AC
contra
1.03 ± 0.20
0.99 ± 0.25
1.02 ± 0.20
Gain PC
ipsi
1.05 ± 0.28
1.05 ± 0.28
1.03 ± 0.19
Gain PC
contra
1.05 ± 0.19
1.04 ± 0.29
0.97 ± 0.25
SD LC
0.07 ± 0.05
0.27 ± 0.05
0.47 ± 0.16
×
×
SD AC
0.08 ± 0.04
0.11 ± 0.05
0.34 ± 0.15
×
×
SD PC
0.13 ± 0.10
0.11 ± 0.09
0.16 ± 0.10
LC Vel [°/s]
ipsi
218 ± 37
216 ± 39
232 ± 35
LC Vel [°/s]
contra
205 ± 39
224 ± 40
218 ± 39
AC Vel [°/s]
ipsi
129 ± 27
123 ± 27
158 ± 31
×
AC Vel [°/s]
contra
133 ± 25
137 ± 26
137 ± 29
PC Vel [°/s]
ipsi
125 ± 26
128 ± 29
138 ± 26
PC Vel [°/s]
contra
127 ± 26
131 ± 28
138 ± 31
Quantified data are shown for groups I to III as mean standard deviation (std). To the right the significant differences (, Kruskal-Wallis test) of intergroup comparison are indicated by an ×. DHI: dizziness handicap inventory, SVV: subjective visual vertical, OT: ocular torsion, SPN: slow phase velocity of the SPN in the dark, UW: unilateral weakness of caloric irrigation, DP: directional preponderance of caloric irrigation, vHIT: video-head-impulse test; LC: lateral SCC, AC: anterior SCC, PC: posterior SCC, Vel: maximal stimulus velocity applied during the vHIT, SD: side difference of the vHIT. The measurement side is given in respect to the lesion side (ipsi: ipsilesional, contra: contralesional).