VNG Test Instructions
Videonystagmography (VNG) testing is used to determine if a vestibular (inner ear) disease may be causing a balance or dizziness problem, and is one of the only tests available today that can decipher between a unilateral (one ear) and bilateral (both ears) vestibular loss. VNG testing is a series of tests designed to document a person’s ability to follow visual objects with their eyes and how well the eyes respond to information from the vestibular system.
The VNG test is designed to give your physician information about the function of the inner ear balance system. The test requires approximately 90 minutes to complete and is painless. A set of goggles with cameras above both eyes will be placed on your face. These cameras are designed to monitor your eye movements in response to different stimuli: visual, body position and stimulation of the inner ear by placement of warm and cool air in the ear canal. Although most people experience some dizziness during the test, the dizziness usually subsides by the completion of the test.
The test requires about 60-90 minutes to complete. Although most people experience some dizziness during the test, the dizziness is usually of short duration. By the completion of the test, nearly all signs of dizziness should have subsided. However, it is advisable to arrange for someone to transport you to and from the test.
Videonystagmography (VNG) Test Instructions
Please allow 1½ to 2 hours for the examination
- Please dress comfortably. Women will be more comfortable if they do not wear a skirt.
- Do not drink coffee, tea, cola, or any other beverage containing caffeine within 24 hours of the test.
- Do not eat or smoke for 3 hours before the test. Diabetics may eat small snacks as necessary, but please avoid heavy meals at least 3 hours before the procedure.
- The following medications must not be taken for at least 2 days (48 hours) before the test:
- ALCOHOL: Including beer, wine, and cough medicines containing alcohol.
- ANTI-NAUSEA MEDICINE: Dramamine, Compazine, Bonine, Marezine, Phernergan, Thorazine, etc.
- ANTI-VERTIGO MEDICINE: Antivert, Meclizine, Scopolamine, Flunarizine
- ANTIHISTAMINES: Chlortrimeton, Dimetane, Disophrol, Benadryl, Actifed, Teldrin, Triaminic, any over-the-counter cold remedies, etc.
- NARCOTICS AND BARBITUATES: Phenobarbital, Codeine, Demerol, Benadryl, Actifed, Teldrin, Triaminic, any over-the-counter cold remedies, etc.
- SEDATIVES: Nembutal, Seconal, Dalmane, Doriden, Placidyl, Qualude, Butisol, chloral hydrate or any other sleeping pills.
- STIMULANTS Amphetamines
- TRANQUILIZERS: Benzodiazepines, Ativan, Xanax, Valium, Librium, Atarax, Vistaril, Equanil, Miltown, Triavil, Serax, Etrafon, etc
- Continue to take heart, high blood pressure, and anticonvulsant medications. Questions regarding other medications should be discussed with your doctor.
- Please refrain from wearing makeup, lotions or moisturizers on your face, especially around the eyes. Lipstick is OK.
- Contact lenses should not be worn during the test.
- Please do not bring unattended children to the examination.
- The results of your test will not be ready during your appointment. A follow up appointment will be made to discuss the results with your physician.
Due to the time required for this test, it is requested that you give us at least 48 hours notice if you are unable to make your appointment. Failure to give 48 hours notice will incur a $75 charge that will not be payable by your insurance company.