Vestibular Function Tests

前庭功能测试
  • 文章类型: Journal Article
    本文介绍了Bárány学会分类委员会对老年性前庭病(PVP)的诊断标准。PVP被定义为一种以不稳定为特征的慢性前庭综合征,步态紊乱,和/或在存在轻度双侧前庭缺损的情况下反复跌倒,实验室检查的结果介于正常值和双侧前庭病建立的阈值之间。PVP的诊断是基于患者的病史,床边检查和实验室评估。PVP的诊断需要双侧降低前庭眼反射(VOR)的功能。这可以诊断为高频范围的VOR与视频命中(vHIT);中频范围与旋转椅测试;和低频范围与热量测试。对于PVP的诊断,两侧的水平角VOR增益应<0.8和>0.6,和/或每侧用温水和冷水刺激的慢相热量诱导的眼球震颤的最大峰值速度之和应<25°/s和>6°/s,和/或在旋转椅上进行正弦刺激时,水平角度VOR增益应当>0.1和<0.3。PVP通常与其他与年龄相关的视力缺陷一起发生,本体感受,和/或皮质,小脑和锥体外系功能也有助于甚至可能是不稳定症状的表现所必需的,步态紊乱,和瀑布。这些标准只是考虑这些症状的存在,随着前庭功能受损的记录,在老年人中。
    This paper describes the diagnostic criteria for presbyvestibulopathy (PVP) by the Classification Committee of the Bárány Society. PVP is defined as a chronic vestibular syndrome characterized by unsteadiness, gait disturbance, and/or recurrent falls in the presence of mild bilateral vestibular deficits, with findings on laboratory tests that are between normal values and thresholds established for bilateral vestibulopathy.The diagnosis of PVP is based on the patient history, bedside examination and laboratory evaluation. The diagnosis of PVP requires bilaterally reduced function of the vestibulo-ocular reflex (VOR). This can be diagnosed for the high frequency range of the VOR with the video-HIT (vHIT); for the middle frequency range with rotary chair testing; and for the low frequency range with caloric testing.For the diagnosis of PVP, the horizontal angular VOR gain on both sides should be < 0.8 and > 0.6, and/or the sum of the maximal peak velocities of the slow phase caloric-induced nystagmus for stimulation with warm and cold water on each side should be < 25°/s and > 6°/s, and/or the horizontal angular VOR gain should be > 0.1 and < 0.3 upon sinusoidal stimulation on a rotatory chair.PVP typically occurs along with other age-related deficits of vision, proprioception, and/or cortical, cerebellar and extrapyramidal function which also contribute and might even be required for the manifestation of the symptoms of unsteadiness, gait disturbance, and falls. These criteria simply consider the presence of these symptoms, along with documented impairment of vestibular function, in older adults.
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  • 文章类型: Journal Article
    OBJECTIVE: The authors present the guidelines of the French Society of Otorhinolaryngology - Head and Neck Surgery (Société française d\'oto-rhino-laryngologie et de chirurgie de la face et du cou - SFORL) on the indications for cochlear implantation in children.
    METHODS: A multidisciplinary work group was entrusted with a review of the scientific literature on the above topic. Guidelines were drawn up, based on the articles retrieved and the group members\' individual experience. They were then read over by an editorial group independent of the work group. The guidelines were graded as A, B, C or expert opinion, by decreasing level of evidence.
    RESULTS: The SFORL recommends that children with bilateral severe/profound hearing loss be offered bilateral cochlear implantation, with surgery before 12months of age. In sequential bilateral cochlear implantation in children with severe/profound hearing loss, it is recommended to reduce the interval between the two implants, preferably to less than 18months. The SFORL recommends encouraging children with unilateral cochlear implants to wear contralateral hearing aids when residual hearing is present, and recommends assessing perception with hearing-in-noise tests. It is recommended that the surgical technique should try to preserve the residual functional structures of the inner ear as much as possible.
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  • 文章类型: Journal Article
    This paper describes the diagnostic criteria for bilateral vestibulopathy (BVP) by the Classification Committee of the Bárány Society. The diagnosis of BVP is based on the patient history, bedside examination and laboratory evaluation. Bilateral vestibulopathy is a chronic vestibular syndrome which is characterized by unsteadiness when walking or standing, which worsen in darkness and/or on uneven ground, or during head motion. Additionally, patients may describe head or body movement-induced blurred vision or oscillopsia. There are typically no symptoms while sitting or lying down under static conditions.The diagnosis of BVP requires bilaterally significantly impaired or absent function of the vestibulo-ocular reflex (VOR). This can be diagnosed for the high frequency range of the angular VOR by the head impulse test (HIT), the video-HIT (vHIT) and the scleral coil technique and for the low frequency range by caloric testing. The moderate range can be examined by the sinusoidal or step profile rotational chair test.For the diagnosis of BVP, the horizontal angular VOR gain on both sides should be <0.6 (angular velocity 150-300°/s) and/or the sum of the maximal peak velocities of the slow phase caloric-induced nystagmus for stimulation with warm and cold water on each side <6°/s and/or the horizontal angular VOR gain <0.1 upon sinusoidal stimulation on a rotatory chair (0.1 Hz, Vmax = 50°/sec) and/or a phase lead >68 degrees (time constant of <5 seconds). For the diagnosis of probable BVP the above mentioned symptoms and a bilaterally pathological bedside HIT are required.Complementary tests that may be used but are currently not included in the definition are: a) dynamic visual acuity (a decrease of ≥0.2 logMAR is considered pathological); b) Romberg (indicating a sensory deficit of the vestibular or somatosensory system and therefore not specific); and c) abnormal cervical and ocular vestibular-evoked myogenic potentials for otolith function.At present the scientific basis for further subdivisions into subtypes of BVP is not sufficient to put forward reliable or clinically meaningful definitions. Depending on the affected anatomical structure and frequency range, different subtypes may be better identified in the future: impaired canal function in the low- or high-frequency VOR range only and/or impaired otolith function only; the latter is evidently very rare.Bilateral vestibulopathy is a clinical syndrome and, if known, the etiology (e.g., due to ototoxicity, bilateral Menière\'s disease, bilateral vestibular schwannoma) should be added to the diagnosis. Synonyms include bilateral vestibular failure, deficiency, areflexia, hypofunction and loss.
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  • 文章类型: Consensus Development Conference
    The new revised version (expires 2012) for sudden, unilateral, sensorineural hearing loss stresses the urgence but not the emergency of diagnostics and therapy in this inner ear disfunction with still increasing incidence. Minimum diagnostics should comprise ENT examination with earmicroscopy, pure tone and tuning fork hearing tests, tympano- and vestibulometry. Classification by frequency loss seems of interest in regard to different underlying pathology, which is still obscure. Therefore from experience glucocorticoids and rheological therapy are recommended in the light of some favoring recent studies. The intratympanic appliCation of glucokorticoids is considered as spare therapy.
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    文章类型: Journal Article
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  • 文章类型: Journal Article
    Physical therapists employed in public schools may be responsible for the evaluation and treatment of not only physically handicapped children, but also children who have moderate to severe motor disabilities secondary to mental retardation. The purpose of this article is to suggest appropriate assessment and treatment techniques for these children. General principles of intervention based on neurophysiologic treatment approaches, particularly sensory integration, are described. Examples of specific assessment and treatment strategies are given for visual, auditory, tactile, olfactory-gustatory, proprioceptive-kinesthetic, and vestibular functions. In addition, self-stimulatory behaviors, tests of motor and reflex development, problems in muscle tone and strength, and variations in gait patterns are discussed.
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