水平半规管扫视波的临床意义探究

doi:10.6040/j.issn.1673-3770.0.2024.441

Abstract

Abstract: Objective By comparing the results of video Head Impulse Test(vHIT)and caloric test(CT), to study the clinical significance of refixation saccade(RS)waves in the horizontal semicircular canals and provide reference for clinical diagnosis. Methods Three groups of data were randomly selected from the database: normal vHIT, without RS without VOR gain reduction(83 cases); RS vHIT, with RS without VOR gain reduction(81 cases); abnormal vHIT, with RS with VOR gain reduction(54 cases). The abnormality rates of the three groups of the CT were compared respectively. In addition, two groups of data were randomly selected from the database, group A was normal CT(91 cases), group B was abnormal CT, a total of 125 cases; and the incidence of RS without VOR gain reduction in vHIT was compared respectively. Results The CT abnormality rates of normal vHIT, RS vHIT and abnormal vHIT were 28.92%, 50.62% and 94.44%, respectively, and the differences between the two comparisons of the three groups were statistically significant(P=0.015,P<0.001 and P<0.001). The incidence rates of vHIT RS without VOR gain reduction in group A and group B were 34.07% and 32.80% respectively, and the difference was not statistically significant(P=0.845). Conclusion The appearance of RS during the horizontal semicircular canals vHIT test, without VOR gain reduction, can serve as an important indication for supplementing the CT or other vestibular function assessments. This approach allows for a comprehensive and detailed evaluation of the patient's vestibular function.

Key words: Video head pulse test, Refixation saccades, Caloric Test, Refined diagnosis

CLC Number:

R739.62

MA Xiaobao, SHEN Jiali, YANG Jun, CHEN Jianyong, ZHU Songhuan. Exploring the clinical implications of normal VOR gain with refixation saccades in lateral canal[J].Journal of Otolaryngology and Ophthalmology of Shandong University, 2025, 39(6): 40-45.

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