Application of vestibular autorotation test in diagnosis of benign paroxysmal positional vertigo.
- Author:
Bo GAO
1
;
Haitao SONG
;
Jinmei ZHOU
;
Weining HUANG
Author Information
1. Department of Otorhinolaryngology, Beijing Hospital, Ministry of Public Health, Beijing, 100073, China.
- Publication Type:Journal Article
- MeSH:
Adult;
Aged;
Benign Paroxysmal Positional Vertigo;
Female;
Humans;
Male;
Middle Aged;
Vertigo;
diagnosis;
physiopathology;
Vestibular Function Tests
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2010;24(19):865-869
- CountryChina
- Language:Chinese
-
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.
