| Objective:1. This thesis, through the analysis of application of vestibular autorotation test (VAT) among aural vertigo patient, evaluates the inspection results of patient’s high-frequency vestibular function and investigates the clinical application value of VAT in the inspection of diseases related to aural vertigo.2. Through the contrastive analysis of results of VAT and caloric test (CT), investigate the clinical application value of the combination of VAT and traditional low-frequency caloric test (CT) in the inspection and diagnosis for aural vertigo.Methods:Investigate86aural vertigo patients,36males and50females,21-69years of age,45.1years of age at average, who were diagnosed in vertigo management of Otolaryngology hospital of Shandong Provincial Hospital Group from February to August in2014. Among them,36patients suffered meniere disease,38benign paroxysmal positional vertigo (BPPV) and12vestibular neuronitis. Carry out VAT and caloric test (CT)for all patients. In VAT, there are five inspection indexes: horizontal gain, horizontal phase position, vertical gain, vertical phase position and horizontal asymmetry. If there is one or more abnormality index(es) among horizontal gain, horizontal phase shift, vertical gain, vertical phase shift and horizontal asymmetry, then the test result is abnormal. In caloric test (CT), if there is one or more single/double abnormality index(es) in semicircular canal attenuation and directional preponderance, then the result is abnormal. Results:In VAT,59patients’results are abnormal (68.6%),among which48patients’ results are phase position abnormality (81.4%) and42gain abnormality (71.2%), and10asymmetry abnormality (16.9%); The characteristics of distribution of gain and phase position at different frequency are same. Among the42gain abnormality,34is horizontal gain abnormality, namely32is gain reduction and2is gain elevation, while all of the rest (8) is vertical gain abnormality, namely gain reduction; and6is with horizontal and vertical gain abnormality. Among the48phase position abnormality, namely all is phase delay,44is horizontal phase position abnormality, while4is vertical phase position abnormality. All of10asymmetry abnormality can coincide with vestibular damage. In the test results, frequency abnormality mainly concentrates on a certain wave band, but not is the full-frequency abnormality. In caloric test (CT), in the contrast test for37(43.0%)patients’results with single/double abnormality for semicircular canal attenuation and directional preponderance,31(36%)is single abnormality and9(10%)is caloric test (CT). While28(32.6%)is double abnormality and the total number of abnormality in both tests is68(79.1%).Conclusion:1. VAT,as a high-frequency wide-band vestibular inspection technique, can not only provide the functional information of vestibular high-frequency area, namely reporting the high-frequency VOR abnormality, but also inspect vertical semicircular canal function, covering the shortage in caloric test (CT) and increasing the clinical diagnosis accuracy.2. There is mutual complementation in the combination of VAT and caloric test (CT), which can contribute to a comprehensive view of semicircular canal function.3. VAT provides a kind of sensitive screening method for the diagnosis of aural vertigo and is an objective detection means for localization diagnosis, perfecting the vestibular function test and providing foundation to clarify a diagnosis. |
