Vestibular dysfunction and compensation after removal of acoustic neuroma

Uehara, Natsumi; Tanimoto, Hidenori; Nishikawa, Tasuku; Doi, Kiyoshi; Katsunuma, Sayaka; Kimura, Hidehito; Kohmura, Eiji; Nibu, Ken‐ichi

doi:10.3233/ves-2011-0429

Cited by 27 publications

(20 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We observed that patients with an asynchronous type of response are older or have less preoperative vestibular deficit than those who have an isochronic type of response; this is in agreement with disability after surgery. It has been shown that in patients over the age of 55, compensation will be limited and disability after surgery permanent . In our patients, age is a significant variable because those displaying an asynchronous response were 10 years older than patients who showed an isochronic eye response.…”

Section: Discussionmentioning

confidence: 61%

The vestibulo‐ocular reflex and subjective balance after vestibular schwannoma surgery

et al. 2013

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 61%

The vestibulo‐ocular reflex and subjective balance after vestibular schwannoma surgery

et al. 2013

View full text Add to dashboard Cite

show abstract

“…This vestibular compensation is associated with a postural compensation highlighted by the absence of degradation of postural performance one year after cochlear implantation. As it had been suggested in other kinds of vestibular dysfunction, for example, in the case of vestibular schwannoma, the time-course of implementation of central adaptive mechanisms, characterized by substitution by other sensory afferences and new behavioral strategies, could lead to a recovery of balance control with an improvement in balance performance [ 29 , 30 ], which are close to normal and are difficult to decompensate [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Unilateral Cochlear Implantation on Balance Control and Sensory Organization in Adult Patients with Profound Hearing Loss

Parietti‐Winkler

Lion

Montaut-Verient

et al. 2015

BioMed Research International

View full text Add to dashboard Cite

Many studies were interested in the consequence of vestibular dysfunction related to cochlear implantation on balance control. This pilot study aimed to assess the effects of unilateral cochlear implantation on the modalities of balance control and sensorimotor strategies. Posturographic and vestibular evaluations were performed in 10 patients (55 ± 20 years) with profound hearing loss who were candidates to undergo unilateral multichannel cochlear implantation. The evaluation was carried out shortly before and one year after surgery. Posturographic tests were also performed in 10 age-matched healthy participants (63 ± 16 years). Vestibular compensation was observed within one year. In addition, postural performances of the patients increased within one year after cochlear implantation, especially in the more complex situations, in which sensory information is either unavailable or conflicting. Before surgery, postural performances were higher in the control group compared to the patients' group. One year after cochlear implantation, postural control was close to normalize. The improvement of postural performance could be explained by a mechanism of vestibular compensation. In addition, the recovery of auditory information which is the consequence of cochlear implantation could lead to an extended exploration of the environment possibly favoring the development of new balance strategies.

show abstract

“…[2][3][4]6,[8][9][10] This process of compensation is not complete with small tumors or in cases of sudden loss of the vestibular functions. 1,2,6,9,[27][28][29][30] Our hypothesis is that continuous firing from irritated vestibular nerves in cases of small VSs hinders the process of central compensation and causes the intractable vestibular symptoms.…”

Section: Discussionmentioning

confidence: 97%

“…Thus, the larger tumors are associated with better quality of life after surgery due to the well-developed central compensation. 2,4,[8][9][10]15,16,[29][30][31] According to some reports, however, the quality of life after surgery is worse than for the normal population or when nonoperative management is performed. [2][3][4]6,[8][9][10] This process of compensation is not complete with small tumors or in cases of sudden loss of the vestibular functions.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of microsurgical tumor removal for treatment of patients with intracanalicular vestibular schwannoma presenting with disabling vestibular symptoms

Samii

Metwali

Gerganov

2017

Journal of Neurosurgery

View full text Add to dashboard Cite

OBJECTIVE The aim of this study was to analyze the efficacy and risks of microsurgery via the hearing-preserving retrosigmoid approach in patients with intracanalicular vestibular schwannoma (VS) suffering from disabling vestibular symptoms, with special attention to vertigo. METHODS This is a retrospective analysis of 19 patients with intracanalicular VS and disabling vestibular dysfunction as the main or only symptom (Group A). All of the patients reported having had disabling vertigo attacks. Subjective evaluation of the impairment of patients was performed before surgery, 3 weeks after surgery, 3 months after surgery, and 1 year after surgery, using the Dizziness Handicap Inventory (DHI). The main outcome measures were improvement in quality of life as measured using the DHI, and general and functional outcomes, in particular facial function and hearing. Patient age, preoperative tumor size, preoperative DHI score, and preservation of the nontumorous vestibular nerve were tested using a multivariate regression analysis to determine factors affecting the postoperative DHI score. The Mann-Whitney U-test was used to compare the postoperative DHI score at 3 weeks, 3 months, and 1 year after surgery with a control group of 19 randomly selected patients with intracanalicular VSs, who presented without vestibular symptoms (Group B). The occurrence of early postoperative discrete vertigo attacks was also compared between groups. RESULTS The preoperative DHI score was ≥ 54 in all patients. All patients reported having had disabling rotational vertigo before surgery. The only significant factor to affect the DHI outcome 3 weeks and 3 months after surgery was the preoperative DHI score. The DHI outcome after 1 year was not affected by the preoperative DHI score. Compared with the control group, the DHI score at 3 weeks and 3 months after surgery was significantly worse. There was no significant difference between the groups after 1 year. Vertigo was improved in all patients and completely resolved after 1 year in 17 patients. CONCLUSIONS Disabling vestibular dysfunction that affects quality of life should be considered an indication for surgery, even in otherwise asymptomatic patients with intracanalicular VS. Surgical removal of the tumor is safe and very effective in regard to symptom relief. All patients had excellent facial nerve function within 1 year after surgery, with a very good chance of hearing preservation.

show abstract

Vestibular dysfunction and compensation after removal of acoustic neuroma

Cited by 27 publications

References 11 publications

The vestibulo‐ocular reflex and subjective balance after vestibular schwannoma surgery

The vestibulo‐ocular reflex and subjective balance after vestibular schwannoma surgery

Effects of Unilateral Cochlear Implantation on Balance Control and Sensory Organization in Adult Patients with Profound Hearing Loss

Efficacy of microsurgical tumor removal for treatment of patients with intracanalicular vestibular schwannoma presenting with disabling vestibular symptoms

Contact Info

Product

Resources

About