A possible objective test to detect benign paroxysmal positional vertigo. The role of the caloric and video-head impulse tests in the diagnosis

IF 1.4 Q2 OTORHINOLARYNGOLOGY
András Molnár, Stefani Maihoub, László Tamás, Ágnes Szirmai
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引用次数: 0

Abstract

Background

Benign paroxysmal positional vertigo (BPPV) is characterized by vertigo lasting from seconds to minutes, induced by head movements.

Objectives

Our study aimed to investigate the clinical significance of the caloric vestibular and video head-impulse tests (vHIT) diagnosing the disorder.

Methods

68 patients suffering from posterior canal BPPV (25 male, 43 females, mean age ± SD, 54.5 ± 13.2 years) and 56 patients with a normal functioning vestibular system as control were investigated. Bithermal caloric test and vHIT was performed during the same medical check-up. Canal paresis (CP%), gain (GA) and asymmetry (GA%) parameters were calculated.

Results

The Dix-Hallpike manoeuvre was only positive in 4% of this population. The CP% parameter was only pathologic in two patients, and there was no significant difference between control and BPPV patients (p = 0.76). The GA value was never under 0.8 in this population, but GA% was abnormal in 63.2%. A significant difference comparing the GA% values to the control group was seen (p = 0.034). There was no correlation detected between the CP% and GA% values in BPPV. Regarding the GA% value, 61% sensitivity and 76% specificity was seen.

Conclusion

The Dix-Hallpike manoeuvre was not often positive in the non-acute phase of BPPV; therefore, objective testing is essential. The caloric test does not have clinical significance in BPPV, but vHIT can be helpful based on the GA% parameter.

Abstract Image

Abstract Image

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一种可能检测良性阵发性体位性眩晕的客观试验。热量和视频头脉冲试验在诊断中的作用
良性阵发性位置性眩晕(BPPV)的特征是由头部运动引起的眩晕持续数秒至数分钟。目的探讨前庭热量测试和视频头冲测试(vHIT)诊断此病的临床意义。方法对68例后路BPPV患者(男25例,女43例,平均年龄±SD, 54.5±13.2岁)和56例前庭系统功能正常的患者进行分析。在同一体检期间进行了双热和vHIT试验。计算根管麻痹度(CP%)、增益(GA%)和不对称度(GA%)参数。结果Dix-Hallpike操作仅在4%的人群中呈阳性。CP%参数仅在两例患者中为病理性,对照组与BPPV患者之间无显著差异(p = 0.76)。该人群GA值从未低于0.8,但GA%异常63.2%。GA%值与对照组比较差异有统计学意义(p = 0.034)。BPPV的CP%和GA%之间没有相关性。GA%值的敏感性为61%,特异性为76%。结论在BPPV非急性期,Dix-Hallpike手法不常阳性;因此,客观的测试是必不可少的。热量测试对BPPV没有临床意义,但基于GA%参数的vHIT可以有所帮助。
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来源期刊
Journal of Otology
Journal of Otology Medicine-Otorhinolaryngology
CiteScore
2.70
自引率
0.00%
发文量
461
审稿时长
18 days
期刊介绍: Journal of Otology is an open access, peer-reviewed journal that publishes research findings from disciplines related to both clinical and basic science aspects of auditory and vestibular system and diseases of the ear. This journal welcomes submissions describing original experimental research that may improve our understanding of the mechanisms underlying problems of basic or clinical significance and treatment of patients with disorders of the auditory and vestibular systems. In addition to original papers the journal also offers invited review articles on current topics written by leading experts in the field. The journal is of primary importance for all scientists and practitioners interested in audiology, otology and neurotology, auditory neurosciences and related disciplines. Journal of Otology welcomes contributions from scholars in all countries and regions across the world.
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