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

• 作者: András Molnár Stefani Maihoub László Tamás (A)gnes Szirmai
• 来源期刊: 中华耳科学杂志（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Research Articles
• 页码范围: 46-49
• 页数: 4页
• 语种: 英文

摘要

Background:Benign paroxysmal positional vertigo (BPPV) is characterized by vertigo lasting from sec-onds 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 pa-tients (p =0.76).The GA value was never under 0.8 in this population,but GA％ was abnormal in 632％.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.