Ms. Wang has been dizzy in many hospitals for a long time, has undergone brain magnetic resonance , and has been hospitalized for a drip, but her condition has not improved. After accidentally inquiring about the vertigo clinic and looking for the doctor here, the doctor suggested that she perform a vestibular function test to help diagnose. Vestibular function test? What is a vestibular? What instrument is used to check the vestibular function test? Do you feel uncomfortable during the examination? for how long? Is the cost expensive? ...Let me listen to you one by one.
Author: Zhulin
Origin: "Neuroscience" official account
What is a vestibular?
vestibular as a medical concept has a broad and narrow meaning. The narrow sense of vestibule refers to a balanced structure in the human inner ear. It is named because it is relatively anatomically wide and similar to the flat open space before the main hall in a building. The broad sense of vestibular refers to a complete system that is connected to the vestibular of the inner ear and extends into the brain, participating in the regulation of human balance, eye movement, posture, etc. Therefore, the generalized vestibular system is also called vestibular system .
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What diseases will cause abnormal vestibular function?
Since the vestibular system is related to the human body's balance, eye movement and posture adjustment, dysfunction of the vestibular system can lead to symptoms such as dizziness, dizziness, shaking vision, unstable walking, poor balance, a sense of overturning, unstable road surface, and a sense of boating. There are many diseases that can cause abnormal vestibular function. Diseases in many majors such as otolaryngology, neurology, cardiovascular, endocrinology, psychology and psychiatry, ophthalmology, hematology, rheumatology and immunology can affect the vestibular system and produce the above symptoms. What instrument is used to check the vestibular function of
?
Doctors can evaluate the patient's vestibular function through various physical examination processes. At the same time, they can further use some instruments and equipment to evaluate the vestibular function, such as video nystagmus. The basic principle of this examination is to draw the pattern of eye movement by collecting video signals or electrical signals generated during eye movement, thereby analyzing the functional status of the vestibular. Therefore, video nystaggrams or electronystaggrams are the most common instruments for evaluating vestibular function. Based on the video nystagmus, a series of extended evaluations can be performed, such as allowing the computer to generate a series of graphics and keep the eyeballs gaze tracking, or injecting hot and cold water/gas into the outer auditory canal (so-called dual-temperature test). There are also some commonly used vestibular function tests, including video head pulse test, vestibular induced myogenic potential examination (VEMP), etc.
Is the vestibular examination uncomfortable?
During the vestibular function examination, patients often experience some discomfort, such as aggravation of dizziness, vertigo attacks, etc., especially when hot and cold water/gas perfusion, which are symptoms triggered by the vestibular examination process and are more common. At the same time, nausea, vomiting, sweating, pale complexion, tachycardia, fear, etc., and the examination will often gradually reduce and disappear within a few hours after the examination. If the patient has no feeling of dizziness during hot and cold water/gas injection, it often means that the patient's vestibular function on that side is very low. How long does it take to check the vestibular function of
? How much is the cost?
Generally speaking, the time will take different depending on the vestibular function test selected by the doctor. For example, video nystagmus and hot and cold water/gas tests require 40 to 50 minutes, video head pulse tests require about 20 minutes, and VEMP also takes about half an hour. The cost of each of these inspections ranges from about 200 to 300 yuan.
What do you need to pay attention to when doing vestibular function check?
1. Before examination: needs to be on an empty stomach, do not drink alcohol 24 hours before examination, do not take anti-diarrhea or sedative drugs (still, dizziness, flucinrizine , promethazine , etc.), and the external auditory canal anus should be cleaned. It is best to remove eye makeup or contact lenses to avoid affecting the examination results.
2. In the inspection: inspectors need to tell you to keep your eyes wide at certain times during the inspection to clearly observe the direction and strength of the nystagmus.
3. After the examination: You can get the report within half an hour after the examination is over. During this waiting process, patients should not rush to leave the examination room. They can rest appropriately to avoid falling, patients with very serious dizziness or weak conditions, and generally poor condition need to accompany their families.
Editor-in-chief: Li Rui (Chief Physician)
Deputy Editor-in-chief: Zhang Lina (Chief Physician)
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