How does cochlear implantation affect five vestibular end-organ functions and dizziness?

被引:23
作者
Dagkiran, Muhammed [1 ]
Tuncer, Ulku [1 ]
Surmelioglu, Ozgur [1 ]
Tarkan, Ozgur [1 ]
Ozdemir, Suleyman [1 ]
Cetik, Fikret [1 ]
Kiroglu, Mete [1 ]
机构
[1] Cukurova Univ, Dept Otorhinolaryngol, Fac Med, Adana, Turkey
关键词
Cochlear implantation; Five vestibular end-organ function; Video head impulse test; Oculer vestibular-evoked myogenic potentials; Cervical vestibular-evoked myogenic potentials; Dizziness handicap inventory; HEAD-IMPULSE TEST;
D O I
10.1016/j.anl.2018.07.004
中图分类号
R76 [耳鼻咽喉科学];
学科分类号
100213 ;
摘要
Objective: To evaluate all five vestibular end-organ functions (lateral, anterior, posterior semicircular canal, utricule, and saccule) and to investigate the relationship between Dizziness Handicap Inventory (DHI) and vestibular functions prior to CI (cochlear implantation) and at postoperative day 3 and month 3. Methods: A total of 42 patients (age 16-70 years) with normal vestibular functions preoperatively and undergoing unilateral CI were included in this prospective descriptive study. Video head impulse test (vHIT) for three semicircular canal (SSC) functions, ocular vestibular-evoked myogenic potential (oVEMP) for utricule function, cervical vestibular-evoked myogenic potential (cVEMP) for saccule function and DHI for subjective vertigo symptoms were performed prior to CI and at postoperative day 3 and month 3. Results: There was a significant impairment of vestibular function in 12 patients (28.5%) on the implantation side and significant DHI increase was observed in 13 of 42 (30.9%) patients at postoperative day 3 after CI (p < 0.05). We found SSC dysfunction in 7 patients (16,6%) who underwent observation with vHIT, saccule dysfunction in 8 patients (19%) with cVEMP and utricule dysfunction in 5 patients (11.9%) with oVEMP on the operated side 3 days after surgery (p < 0.05). Posterior SSC functions (5 patients) were more affected than lateral SSC functions (3 patients). At postoperative month 3, six patients (14.2%) still had deteriorating results in the objective tests and significant DHI increase was continued in 4 (9.5%) patients (p < 0.05). The deterioration in vHIT continued in only 1 (2.3%) patient (p > 0.05). The deterioration in cVEMP continued in 5 (11.9%) patients (p < 0.05). The deterioration in oVEMP continued in 2 (4.7%) patients (p > 0.05). There was a significant correlation between DHI and objective vestibular tests both in the early and late postoperative period (r = 0.795; p < 0.05). Conclusion: Our study showed that both canal and otolith functions can be damaged after CI especially in the early postoperative period. Surprisingly, posterior SSC functions were more affected than lateral SSC. Therefore, a gold standard vestibular test battery that can evaluate each of three SSC canals and two otoliths functions is essential. Since a single vestibular test for this purpose is not available, we recommend the use of the three available vestibular tests together. This test battery, which is capable of evaluating five vestibular end-organ functions in preoperative and postoperative vestibular evaluations, can provide more accurate results not only for CI but also for most otologic surgeries. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:178 / 185
页数:8
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