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Results for “VESTIBULAR FUNCTION TESTS”

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At least 1,351 records · Page 75Linked to original sources
PubMed2005

Drop attacks in elderly patients secondary to otologic causes with Meniere's syndrome or non-Meniere peripheral vestibulopathy.

Many neurologists are unaware of the drop attack that may occur from an inner ear dysfunction especially in elderly. We studied the clinical features and results of quantitative audiovestibular tests in six elderly patients (> or =65 years of age) who presented with drop attacks attributable to an inner ear pathology. Group was divided into Meniere's syndrome (4) or non-Meniere peripheral vestibulopathy (2). Standard dizziness questionnaire and quantitative audiovestibular function testing were performed. Episodes were described as a sudden push to the ground in four or a violent illusionary movement of environment leading to a fall in two. All cases gave a history of prior vertiginous episodes and vestibular testing revealed unilateral caloric paresis. Ipsilateral hearing loss was documented in four cases. Our results suggest that otologic causes should be considered in the differential diagnosis of the drop attack in elderly, even if the symptoms and signs were not consistent with Meniere's syndrome.

Age of Onset↗
PubMed1979

Congenital nystagmus and functional vestibular evaluation.

In a limited number of cases with congenital nystagmus, we examined to what extend ENG could help in the assessment of the vestibular function. We observed that in half of the cases the presence of this disturbing congenital nystagmus allowed to draw a functional conclusion from the ENG-recording. We propose to associate the laterotorsion technique as a valuable aid for further investigations.

Caloric Tests↗
PubMed1998

Posturography changes do not predict functional performance changes.

OBJECTIVE: Essentially no data exist to assess the utility of posturography, a frequently used test of standing balance in measuring change. The authors examined 1) how changes in posturography relate to functional balance changes as measured in the clinic and gait laboratory and 2) posturography's role and value in assessing patients with vestibular dysfunction. STUDY DESIGN: A correlational research design was used. SETTING: This study was conducted at a large, urban U.S. tertiary referral hospital. PATIENTS: Thirty-seven subjects (22 females and 15 males) with peripheral vestibular hypofunction and stable symptoms participated. Patients with central nervous system pathology were excluded from this study. INTERVENTIONS AND MAIN OUTCOME MEASURES: Subjects were tested before and after 6-8 weeks of vestibular rehabilitation with Equitest posturography sensory organization test (SOT), with timed quasistatic bilateral standing in tandem, on foam, and one leg; and with functional balance measures including gait velocity, a modified Timed Up & Go, gait with head rotation, gait with eyes closed, and tandem gait. RESULTS: Changes in SOT were not predictive of, nor often even directly correlated with, changes in quasistatic standing or functional performance. CONCLUSIONS: These data suggest that posturography SOT alone is not a useful tool to assess balance and functional changes in patients with vestibular hypofunction.

Female↗
PubMed1983

Stapedius reflex test, brainstem audiometry and opto-vestibular tests in diagnosis of acoustic neurinomas. A comparison of test sensitivity in patients with moderate hearing loss.

The stapedius reflex test, brainstem audiometry and the opto-vestibular tests for identifying acoustic neurinomas (AN) were evaluated and compared in a study of 21 patients with radiologically or surgically verified AN and a pure tone average not exceeding 60 dB HL. The stapedius reflex test results were interpreted according to the criteria developed at this clinic. The stimuli for the auditory brainstem response (ABR) were 2 kHz haversine waves and 4 kHz square waves. The vestibular examination consisted of a caloric test and the recording of eye-tracking and gaze nystagmus. In the cases studied the stapedius reflex test gave 1 false-negative result and ABR none. The ENG gave 3 false-negatives whereas the results of speech discrimination tests were misleading in no fewer than 1/3 of the cases. The results of the different tests were directly correlated but correlation coefficients did not exceed 0.65. Tumours larger than 15-20 mm showed a different test pattern than those below that size: stapedius reflex response, ABR and caloric response were eliminated and all of these patients had abnormal optomotor function. It is suggested that an optimal routine test procedure should consist of a pure tone audiogram, supplemented by ABR or the stapedius reflex test. Opto-vestibular tests may be of value in a preliminary estimation of tumour size.

Audiometry↗
PubMedDate not supplied

The use of dynamic posturography to detect neurosensorial disorder in IDDM without clinical neuropathy.

The main aim was to evaluate the relative importance of sensory interactions for postural stability in 45 patients with insulin-dependent diabetes mellitus (IDDM) with and without peripheral neuropathy. All subjects had normal electronystagmography. Dynamic posturography provides functional, selective testing of three sensory modalities in maintenance of balance, i.e., vestibular, visual, and somatosensory. The Sensory Organization Test (SOT) includes six test conditions during which the subject tries to maintain an upright stance with as little sway as possible. The subject stands on a movable platform facing a square visual surrounding, which can be rotated independently. The test is performed first with the eyes open, then with the eyes closed. The second component of posturography testing consists of the Motor Control Test (MCT) concerning motor responses routinely used in balance maintenance. Compared to control subjects, IDDM patients with peripheral neuropathy but not patients without neuropathy showed lower scores for test conditions SOT 1 (analysis of variance, ANOVA F = 8.3; Scheffe test: p = 0.0007), SOT 2 (F = 6.6; p = 0.004), SOT 3 (F = 3.4; p = 0.04), and SOT 6 (F = 3.4; p = 0.04). The muscle response latencies in MCT were prolonged for small forward perturbations (F = 4.6; p = 0.02) in neuropathic patients (148.3+/-14.2 ms) with respect to control subjects, but not in non-neuropathic patients with respect to control subjects (135.2+/-13.3 ms). Sural (r = 0.2; p = 0.002) and peroneal (r = 0.12; p = 0.02) nerve conduction velocities showed significant correlations with muscle response latencies of MCT for small forward perturbations. Our results suggest a subclinical dysequilibrium in IDDM patients with peripheral neuropathy. The results of dynamic posturography may reflect the impairment of the somatosensory system, rather than a specific lesion of vestibular and/or visual modalities.

Adult↗
PubMed2003

[Testing of the macula induced vestibuloocular reflex--possibilities and problems in the clinical routine].

INTRODUCTION: During the last years, an increasing number of papers is presented dealing with diseases and diagnostic procedures of the macula function. On the other hand, there are just a few distinct test setups for this purpose. In clinical routine, this kind of test system has to be efficient and effective to diagnostic and therapeutic findings. METHODS: The presented test setup includes examination of the semicircular canals by means of harmonic acceleration pendular rotation test and the bilateral, bithermal test as well as otolith function tests i. e. off vertical axis rotation (OVAR) and eccentric rotation. From March 1999 to May 2000 522 patients with dizziness were examined. RESULTS: Otolith tests results could be assessed in a range between 87 % to 95 % of the cases. The quality failure rate was significantly higher than in findings of semicircular canals examination procedures. The major caused technical problem were artifacts. Looking for the diagnostic relevance of the method, 37 % of the patients. Suffering from dizziness and who have normal findings in cupula VOR testing procedures revealed isolated macular dysfunctions. DISCUSSION: The relevance for diagnostic is demonstrated. Otolith function tests can be applied in clinical routine and give relevant information for diagnosis and treatment. Macula test procedures are still sophisticated. Technical development of VOG-recording is necessary for their general application in otology.

Acoustic Maculae↗
PubMed2004

Audiovestibular functioning in patients with panic disorder.

OBJECTIVE: The objective of this study was to investigate audiovestibular function in patients with panic disorder and healthy subjects by using vestibular and audiologic tests. METHODS: Thirty-four panic disorder patients and 20 healthy control subjects were assessed by using clinical otoneurological examination, pure tone audiometry, tympanometry, and electronystagmography (ENG). All patients were evaluated with the Panic and Agoraphobia Scale (PAS), the Hamilton Anxiety Rating Scale (HARS), the Hamilton Depression Rating Scale (HDRS), and the State-Trait Anxiety Inventory (STAI). RESULTS: On vestibular testing, abnormal responses were more prevalent in panic disorder patients compared to healthy controls. The presence of agoraphobia in panic disorder patients did not make a significant difference on vestibular test results. The only variable that may be a predictor of vestibular abnormalities in panic disorder patients was found to be dizziness between attacks. CONCLUSION: The results show that dizziness between panic attacks may warrant audiovestibular testing among other medical investigations.

Acoustic Impedance Tests↗
PubMed1981

Galvanic vestibular tests in the assessment of coma and brain death.

Galvanic stimulation over the mastoid process elicits oculovestibular responses that provide a measure of brainstem function. The equipment is simple and is available in most neurodiagnostic laboratories. This type of test provides an advantage over caloric testing in the presence of external and middle ear disease and basal skull fracture and can be a useful adjunct in the evaluation of coma and brain death.

Adult↗