[The changes in subjective visual vertical after otolith reduction in patients with BPPV].
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
; 36(11): 816-821, 2022 Nov.
Article
em Zh
| MEDLINE
| ID: mdl-36347572
ABSTRACT
Objective:
To observe and analyze the changes in subjective visual verticalï¼SVVï¼ after otolith reduction in patients with BPPV.Methods:
46 patients with confirmed BPPV recieving successful otolith reduction were selected as the test group. 31 cases of posterior canal stones and 15 cases of horizontal semicircular canal stones, 29 cases of right ear and 17 cases of left ear. Fifty cases of healthy young volunteers were in the control group. Using the virtual reality SVV examination system, 0° SVV in the positive head were tested in the test group patients before and after the reduction of SVV , and were tested in the control group .The deviation angle of the SVV before and after the otolith reduction in the test group were analyzed.Results:
Before otoliths reduction, the SVV was ï¼0.08±3.83ï¼° of right BPPV and was ï¼-1.69±2.23ï¼° of left BPPV. After otoliths reduction, the SVV was ï¼-1.52±3.74ï¼° of right BPPV and was ï¼-1.04±2.50ï¼° of left BPPV. In the control group, the SVV wasï¼-1.57±2.28ï¼° . The changes of SVV deflection angle between the control group and the right BPPV before the otolith reduction, and before and after the otolith reduction in the right BPPV were analyzed, and the differences were all statistically significant. There was no significant difference in SVV deflection angle between the left BPPVï¼before and after reductionï¼ and the control group. In the test group, after the otolith reduction, 18 cases had larger bias angles, 28 cases had smaller bias angle among which 13 cases the deviation angle even turned to the contralateral side.Conclusion:
Utriculare dysfunction in patients with BPPV leads to the judgment error of SVV. Reduction of otolithoid can cause new stimulation to the eutricule and affect its functional status. SVV detection can provide help for the evaluation of utricular function in patients with BPPV.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Membrana dos Otólitos
/
Canais Semicirculares
Limite:
Humans
Idioma:
Zh
Revista:
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Ano de publicação:
2022
Tipo de documento:
Article