Department of Otorhinolaryngology, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea
Copyright © 2016 by The Korean Balance Society. All rights reserved.
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(1) 하방안진이 일측에서만 보이는 군(unilateral downbeat, Uni-DB),
(2) 하방안진이 양측에서 보이는 군(bilateral downbeat, Bi-DB),
(3) 회선안진과 하방안진이 병변측에서 보이는 군(ipsilateral torsional downbeat, Ipsi-TDB),
(4) 회선안진과 하방안진이 병변 반대측 또는 양측에서 보이는 군(contralateral or bilateral torsional downbeat, Contra- or Bi-TDB),
(5) 비전형적인 안진을 보이는 군(atypical nystagmus).
Characteristic | Unilateral DB (n=11) | Bilateral DB (n=11) | p-value | Ipsilateral TDB (n=14) | Contralateral or bilateral TDB (n=14) | p-value | DB (n=22) | TDB (n=28) | p-value |
---|---|---|---|---|---|---|---|---|---|
Duration of nystagmus | 29.3±12.1 | 29.9±12.4 | >0.999a) | 21.0±11.0 | 29.3±12.9 | 0.077a) | 29.4±12.0 | 25.0±12.5 | 0.132a) |
Number of CRP | 1.8±1.1 | 1.9±0.7 | 0.606a) | 1.1±0.2 | 2.2±2.0 | 0.094a) | 1.6±0.7 | 1.4±0.9 | 0.183a) |
Duration of vertigo | 3.5±3.8 | 9.9±10.4 | 0.171a) | 2.1±2.0 | 1.7±1.2 | 0.910a) | 5.4±5.5 | 2.5±2.6 | 0.109a) |
Pattern of nystagmus | Position | Vertical component | Horizontal component | Patients (N, %) | No. of CRP | Duration of vertigo | Duration of nystagmus |
---|---|---|---|---|---|---|---|
Unilateral DB | 1.8±1.1 | 3.5±3.8 | 28.8±12.1 | ||||
R-DH | Down | No | 7 (13.2) | ||||
L-DH | Down | No | 4 (7.5) | ||||
Bilateral DB | 1.9±0.7 | 9.9±10.5 | 29.9±12.4 | ||||
Both-DH | Down | No | 11 (20.8) | ||||
Unilateral (ipsilateral) TDB | 1.1±0.3 | 2.1±2.0 | 21.0±11.1 | ||||
R-DH | Down | Right | 6 (11.3) | ||||
L-DH | Down | Left | 8 (15.1) | ||||
Unilateral (contralateral) TDB | 1.7±1.5 | 2.1±1.5 | 24.7±11.3 | ||||
R-DH | Down | Left | 4 (7.5) | ||||
L-DH | Down | Right | 3 (5.7) | ||||
Bilateral TDB | 2.7±2.5 | 1.3±0.8 | 33.3±14.0 | ||||
Both-DH | Down | Right | 1 (1.9) | ||||
Both-DH | Down | Left | 6 (11.3) | ||||
Atypical nystagmus | 1.0±0 | 1.7±1.1 | 28.0±14.4 | ||||
R/L-DH | Down/down | Right/no | 2 (3.8) | ||||
R/L-DH | Down/down | No/right | 1 (1.9) |
Characteristic | Unilateral DB (n=11) | Bilateral DB (n=11) | p-value | Ipsilateral TDB (n=14) | Contralateral or bilateral TDB (n=14) | p-value | DB (n=22) | TDB (n=28) | p-value |
---|---|---|---|---|---|---|---|---|---|
Duration of nystagmus | 29.3±12.1 | 29.9±12.4 | >0.999 |
21.0±11.0 | 29.3±12.9 | 0.077 |
29.4±12.0 | 25.0±12.5 | 0.132 |
Number of CRP | 1.8±1.1 | 1.9±0.7 | 0.606 |
1.1±0.2 | 2.2±2.0 | 0.094 |
1.6±0.7 | 1.4±0.9 | 0.183 |
Duration of vertigo | 3.5±3.8 | 9.9±10.4 | 0.171 |
2.1±2.0 | 1.7±1.2 | 0.910 |
5.4±5.5 | 2.5±2.6 | 0.109 |
Values are presented as number (%) or mean±standard deviation. CRP, canalith reposition procedure; DB, downbeat; R-DH, Dix-Hallpike test on right side; L-DH, Dix-Hallpike test on left side; TDB, torsional downbeat.
DB, downbeat; TDB, torsional downbeat; CRP, canalith reposition procedure. Mann–Whitney U test.