Postural Stability of Preoperative Acoustic Neuroma Patients Assessed by Sway Magnetometry: Are They Unsteady?

Collins, Melanie M.; Johnson, I.; Clifford, E.; Birchall, John P.; O'Donoghue, G. M.

doi:10.1097/00005537-200304000-00010

Cited by 7 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This percentage refl ects the sensitivity of VFP. It is close to the result by Collins et al [18] , who studied 51 preoperative VS patients with sway magnetometry, and 44% of them had an abnormal sway path length. They recommended sway magnetometry as an accurate tool to assess patients with VS, and in this regard our present results are comparable.…”

Section: Discussionsupporting

confidence: 91%

“…In other words, 30 (61%) patients had at least some problems with balance, which is in close agreement with the 49-65% reported in earlier studies based on subjective questionnaires [2,3,5,17] . These survey studies have limitations due to the fact that historic recall has a potential bias, and also since a poor response rate may diminish their reliability [17,18] . However, our rate of 61% agrees well with that of 63% by Driscoll et al [4] , who investigated retrospectively medical charts of 210 patients with VS.…”

Section: Discussionmentioning

confidence: 99%

“…Cass et al [18] have reported the usefulness of dynamic posturography in predicting postoperative balance disturbance via preoperative testing. In our study a total of 22 patients (45%) had at least one abnormal VFP parameter.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Preoperative Postural Control of Patients with Vestibular Schwannoma Assessed by Visual Feedback Posturography

Hirvonen¹,

Aalto²,

Hirvonen³

2006

ORL

View full text Add to dashboard Cite

Background: The need for an objective method to describe the functional postural control of patients with vestibular schwannoma in agreement with their subjective sensation of balance. Objectives: The objective was to compare the postural control of 49 patients with unilateral vestibular schwannoma (VS) with that of healthy subjects by using visual feedback posturography (VFP). We aimed to find out if preoperative postural control of the patients correlates with their subjective sensation of balance. Methods: In the VFP, while standing on the platform, patients were instructed to move their center of gravity (COG) marker to the targets as fast and accurately as possible. Hit delay (HD) to the targets, hold percentage (HP) within the targets, COG marker velocity (CMV) to the targets, and balance index (BI) were calculated. We rated intensity of balance disturbance using a 5-point qualitative scale. Results: Twenty-two (45%) patients had at least one abnormal VFP parameter, and 49% of patients were simultaneously symptomatic. Mean hit delay (HD), hold percentage (HP), and balance index (BI) were significantly worsened in patients with VS (p < 0.05). Increased HD and BI correlated significantly with subjective sensation of imbalance (p = 0.02). Conclusions: The overall deficit in preoperative postural control of the VS patients was not severe, and this finding agreed well with their subjective sensations.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Preoperative Postural Control of Patients with Vestibular Schwannoma Assessed by Visual Feedback Posturography

Hirvonen¹,

Aalto²,

Hirvonen³

2006

ORL

View full text Add to dashboard Cite

show abstract

“…Conversely, approximately 40-50% of patients inflicted with VS report unsteadiness 46,47 ; vertigo is infrequently experienced in those patients. Treatment of VS is aimed mainly at tumor extirpation or growth stabilization to prevent potential neurologic complications from brainstem compression.…”

Section: Discussionmentioning

confidence: 99%

A Neurotological Dilemma: Concurrent Management of Ménière’s Disease and Contralateral Vestibular Schwannoma

Isak

2014

USURJ

View full text Add to dashboard Cite

Objective: To present the association of Ménière’s disease (MD) in one ear and vestibular schwannoma (VS) in the contralateral ear as a rare clinical entity, and discuss management options.Methods: A retrospective chart review of all patients diagnosed with MD over a ten year period was conducted for patients that met a definite diagnosis of MD in the ear contralateral to the ear with VS diagnosis, based on the 1995 MD criteria set by American Academy of Otolaryngology—Head and Neck Surgery.Results: Of 974 patients that met the inclusion criteria for a diagnosis of VS, five patients had a diagnosis of contralateral MD. The age range was 32-55 years. The size of VS ranged from 3-25 mm. All patients had the MD component managed with an aggressive medical protocol, and short courses of prednisone. For VS, four patients underwent surgery (three translabyrinthine, one retrosigmoid), and one patient opted for stereotactic radiation.Conclusion: The association of MD in one ear and VS in the contralateral ear represents a rare clinical scenario. Bilateral deafness and/or bilateral labyrinthine hypofunction are interventional risks that can lead to severe patient incapacitation. Tumor size, brainstem compression, tumor growth, residual functional hearing, and the degree of disability of MD vertiginous symptoms are important considerations in this management algorithm.

show abstract

“…This is less than that reported by others. Collins et al 29 found that 49% of patients with vestibular schwannoma had abnormal path lengths with eyes closed prior to surgery. Matthies and Samii tested balance with eyes closed and found abnormal results to be most common in patients with tumors compromising the brain stem but almost equally (41%) in purely intrameatal tumors 4 …”

Section: Discussionmentioning

confidence: 99%

Long‐term Effects of Conservative Management of Vestibular Schwannoma on Dizziness, Balance, and Caloric Function

Nilsen

Lund‐Johansen

Nordahl

et al. 2019

Otolaryngol.--head neck surg.

View full text Add to dashboard Cite

Objectives To study the development of dizziness, caloric function, and postural sway during long-term observation of untreated vestibular schwannoma patients. Study Design Retrospective review of a prospectively maintained longitudinal cohort. Setting Tertiary referral hospital. Subjects and Methods Patients with vestibular schwannoma undergoing wait-and-scan management were included—specifically, those who did not require treatment during a minimum radiologic follow-up of 1 year. Baseline data and follow-up included magnetic resonance imaging, posturography, bithermal caloric tests, and a dizziness questionnaire. Main outcomes were prevalence of moderate to severe dizziness, canal paresis, and postural instability at baseline and follow-up, as compared with McNemar’s test. Results Out of 433 consecutive patients with vestibular schwannoma, 114 did not require treatment during follow-up and were included. Median radiologic follow-up was 10.2 years (interquartile range, 4.5 years). Age ranged from 31 to 78 years (mean, 59 years; SD, 10 years; 62% women). Median tumor volume at baseline was 139 mm3 (interquartile range, 314 mm3). This did not change during follow-up ( P = .446). Moderate to severe dizziness was present in 27% at baseline and 19% at follow-up ( P = .077). Postural unsteadiness was present in 17% at baseline and 21% at follow-up ( P = .424). Canal paresis was present in 51% at baseline and 56% at follow-up ( P = .664). Conclusions There was no significant change in the prevalence of dizziness, postural sway, or canal paresis during conservative management of vestibular schwannoma, while tumor volume remained unchanged. This indicates a favorable prognosis in these patients with regard to vestibular symptoms.

show abstract

Postural Stability of Preoperative Acoustic Neuroma Patients Assessed by Sway Magnetometry: Are They Unsteady?

Abstract: Half of preoperative acoustic neuroma patients are unsteady, exhibiting abnormal sway patterns based on path length measurements. The increase in sway path length demonstrable in normal subjects with eyes closed was significantly exaggerated in patients with acoustic neuroma.

Cited by 7 publications

References 9 publications

Preoperative Postural Control of Patients with Vestibular Schwannoma Assessed by Visual Feedback Posturography

Preoperative Postural Control of Patients with Vestibular Schwannoma Assessed by Visual Feedback Posturography

A Neurotological Dilemma: Concurrent Management of Ménière’s Disease and Contralateral Vestibular Schwannoma

Long‐term Effects of Conservative Management of Vestibular Schwannoma on Dizziness, Balance, and Caloric Function

Contact Info

Product

Resources

About