1. Cervical and ocular vestibular-evoked myogenic potentials in patients with benign paroxysmal positional vertigo.
- Author
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HU Juan, ZHANG Qing, LIANG Jian-min, XU Min, XU Xin-da, CHEN Yan-fei, ZHANG Yan, and KAGA Kimitaka
- Subjects
EVOKED potentials (Electrophysiology) ,MYOBLASTS ,CERVICAL cancer patients ,VERTIGO ,CONTROL groups ,COMPARATIVE studies - Abstract
Objective To explore the clinical characteriitics of vestibular-evoked myogenic potentials (VEMPs) in patients with benign paroxysmal POSiOMI vertigo (BPPV) . Methods We enrolled 67 BPPV patients as the observation group and 19 (38 ears) age- and gender-matched normal subjects as the normal control group. Both patients and normal subjects underwent conventional ocular-VEMP (oVEMP) and cervical-VEMP (cVEMP) tests in bllateral ears. The results were compared between the affected ears, the contralateral ears of the patients and the normal control ears. Results oVEMP was elidted in 29 affected ears (43.3%), 28 contralateral ears (41.8%) and 27 normal ears (71. 1%) . No significant difference was found in response rate between the affected ears and the contralateral ears (P>0.05). However, significant difference could be found between the affected group (both affected ears and contralateral ears) and the normal group (P<0.01). cVEMP could be elicited in 42 affected ears (62.7%), 41 contralateral ears (61.2%) and 32 normal ears (84.2%). There were no significant difference in response rate between the affected ears and the contralateral ears (P>0.05) ; however, significant difference could be found between the affected group (both affected ears and contralateral ears) and the normal group (P<0.05). The response rate of oVEMP was remarkably lower than that of cVEMP (P<0. 05). However, no significant difference was found in oVEMP or cVEMP parameters (threshold, N1 latency, P1 latency, or amplitude) among the groups (P > 0. 05). Conclusion The response rates of oVEMP and cVEMP in the affected and the contralateral ears in the affected groups are sigrnficantly lower than those in normal controls; low response rates are more likely to appear in oVEMP tests. The waveforms of oVEMP and cVEMP tend to remain normal in patients with BPPV. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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