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. 2010 Oct;24(19):865-9.

[Application of vestibular autorotation test in diagnosis of benign paroxysmal positional vertigo]

[Article in Chinese]
Bo Gao  1 , Haitao Song, Jinmei Zhou, Weining Huang
Affiliations
  • PMID: 21174744

[Application of vestibular autorotation test in diagnosis of benign paroxysmal positional vertigo]

[Article in Chinese]
Bo Gao et al. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2010 Oct.

Abstract

Objective: The objective of this study was to evaluate the utility of vestibular autorotation test in the diagnosis of BPPV.

Method: VAT and caloric test were performed on 41 patients with BPPV. VAT results were analyzed according to the affected semicircular canal.

Result: Results of VAT were abnormal in 34 (82.93%) patients with BPPV. Fourteen cases were found with abnormal vertical phase, 1 case with abnormal vertical gain in a total of 21 vertical semicircular canal BPPV patients. Six cases with abnormal horizontal phase lead, 5 cases with abnormal horizontal gain, 2 cases with asymmetry were found in 12 patients with horizontal semicircular canal BPPV. Phase lead was abnormal in all frequencies in 4 patients, and in 2-3 Hz in 21 patients. 24 (58.54%) patients showed abnormal canal paresis (CP) and direction preference (DP) in caloric test.

Conclusion: VAT can indicate information of vestibular function in both vertical and horizontal semicircular canal. Phase of VAT is constantly enhanced in BPPV, especially in 2-3 Hz. As the supplement of caloric test, VAT may prove helpful in assessment of semicircular canal function.

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