It looks at specific nerves in the brain such as thevestibular nerve,oculomotor nerve, andtrochlearandabducens nerves.
It is commonly used to diagnosevertigoor other conditions that cause issues with balance.
This article reviews the electronystagmography procedure and why it’s used.
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Vestibular dysfunction takes place if there are issues within the sensory system that cause balance or coordination issues.
This test is considered the gold standard when it comes to diagnosing conditions such asvertigo.
Are There Any Similar Tests?
However, a VNG uses different tools to get a similar read on how the system is functioning.
This is because a portion of the test involves spraying water or air into the ear.
Before the Test
You will likely not have to make any special arrangements prior to your test.
However, there are some things you should know before arriving.
Timing
The procedure itself will take roughly 90 minutes.
Location
An ENG usually is performed in a hospital.
Or you may wait in the hospital to discuss a diagnosis with your healthcare provider.
You should also avoid alcohol and tobacco products prior to the test.
Medications
You should take your regular medications as prescribed by your healthcare provider.
This includes makeup as well as perfume.
You will be asked to remove both if you choose to wear them to your test.
You will then be brought into the test room to set up.
Pre-Test
Before the test begins, any earwax you may have will be removed from your ear.
Typically, the eye movements are rapid and side to side.
Warm water or air will be used following the cold to record your eye movements.
Are My Eyes Supposed to Be Open or Closed?
In some cases, the eyes can remain closed.
However, you may also be asked to track flashing lights or moving lines while the test is underway.
As previously mentioned, this test typically is used to diagnose a person who is experiencing symptoms of vertigo.
However, it can be used in the diagnostic process of various other health conditions.
The follow-up appointment following an ENG is used to discuss results with your healthcare provider.
They will examine the results and determine what they suspect is the cause of your symptoms.
The test is used to diagnose vertigo, which, fortunately, can be treated effectively.
Nausea is a common side effect of the test.
Generally speaking, you could go home and resume your daily activities following your ENG.
University of Rochester Medical Center.Electronystagmography (ENG).
Johns Hopkins Medicine.Electronystagmography (ENG).
