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Vestibular Evoked Myogenic Potential (cVEMP)

The Vestibular Evoked Myogenic Potential (cVEMP) test evaluates otolith and vestibular nerve function by measuring short-latency EMG potential evoked responses to high-level acoustic stimuli. It is an essential tool for diagnosing various vestibular disorders.

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When is cVEMP required

  • Otolith and Vestibular Nerve Function: Assesses the function of the otolith organs and vestibular nerve.
  • Diagnostic Tool: Helps diagnose conditions such as Vestibular Neuritis, Superior Semi-circular Canal Dehiscence (SSCD), Meniere’s Disease, and Demyelinating Disorders.

Useful in

  • Vestibular Neuritis
  • Superior Semi-circular Canal Dehiscence (SSCD)
  • Meniere’s Disease
  • Demyelinating Disorders
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Specifications

  • Number of Channels: 2
  • Stimulus: Clicks delivered through air conduction earphones.
  • Sound Intensity: 90 dB nHL
  • Stimulus Frequency: 5.1 Hz
  • Automated Calculations:
    • Automated cVEMP ratio calculation
    • Calculation of Interaural difference of P1 Latency, Interaural difference of N1 Latency, Interaural difference of P1-N1 Inter amplitude, Side Ratio L/R, Asymmetrical Ratio (%)

NeuroEquilibrium cVEMP offers a precise and efficient method for assessing otolith and vestibular nerve function, aiding in the diagnosis and management of various vestibular disorders.

Frequently Asked Questions

What is the cVEMP test and why do I need it?

A cVEMP test is done to check if your inner ear and a nerve are coordinating properly to keep your balance. While headphones play sounds during the test, stickers on your neck check how your neck muscles react. This way, doctors can find out if  the cause of your dizziness could be because of Ménière’s disease or vestibular neuritis.

Before the test, wash off any lotion, makeup, or moisturizer you have put on your neck, chest, or face. Mention to your doctor whether you are using muscle relaxants or if you have a pacemaker. While having the test, you should move your neck in different directions to help get accurate results.

While taking the test, you will lie down and some small stickers, known as electrodes, will be put on your neck, chest, and forehead. You’ll have headphones that send you clicking or beeping sounds to listen to. At this step, you are meant to nod your head a little to get your neck muscles working. Your muscles’ responses to the sound are captured by the test. It is not painful and normally takes less than an hour.

When the cVEMP test is done, you can resume your normal activities right away. There are no harmful results from taking the test. After looking at how your muscles react to the sounds, the specialist will provide your doctor with the results. Your doctor will then explain everything to you in the next visit. They will let you know if the problem is linked to your inner ear. For this reason, your doctor can decide if you need more tests, adjust how you live, or start medications to manage your symptoms.

When the cVEMP test is done, you can resume your normal activities right away. There are no harmful results from taking the test. After looking at how your muscles react to the sounds, the specialist will provide your doctor with the results. Your doctor will then explain everything to you in the next visit. They will let you know if the problem is linked to your inner ear. For this reason, your doctor can decide if you need more tests, adjust your lifestyle, or start medications to manage your symptoms.

If the doctor finds something wrong during the cVEMP test, they will suggest treatments that match the reason. They might prescribe drugs and urge people with Ménière’s disease to eat less salt. You may be given a referral for vestibular rehabilitation therapy, a kind of physical therapy that improves balance. In some cases, more tests are required. A specialist will come up with a treatment plan that fits your health needs and symptoms.

If a balance issue is identified during the cVEMP test, your doctor will recommend treatments that are specific to your condition. This may include medications and lifestyle changes, such as reducing salt intake for individuals with Ménière’s disease. You might also be referred for vestibular rehabilitation therapy, which helps improve balance through targeted exercises. In some cases, further tests may be needed. The treatment plan will be tailored to your symptoms and overall health to help prevent frequent flare-ups of your condition.

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