Richard P. Hull, M.D.
George C. Morgan, MD, Ph.D.
1104 Monroe Street, Huntsville, AL 35801
256-533-4402

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Videonystagmography, VNG

  • The VNG is the latest technology used to distinguish peripheral disease, such as BPPV, from CNS pathology.
  • The VNG uses an infrared camera to measure eye movements at rest and through a series of head movements. Caloric testing is also performed.
  • If the patient is diagnosed with BPPV, we perform an Epley maneuver which is about 85% effective in providing relief of the symptoms of BPPV.
  • Emily Walker, our VGN technologist, is a board certified member of the American Board of Balance Medicine.
  • Preparation for this test is necessary. Please see "VNG preparation Instructions".

VNG Preparation Instructions

  • Wear loose fitting clothes for comfort.
  • Do not wear any skin lotion, moisturizing creams, oils, or make-up on your face.
  • Do not eat 3-6 hours prior to testing.

Please REFRAIN from the following 48 hours prior to the scheduled testing:

  • Alcohol
  • Caffeine
  • Sleeping Pills
  • Cold medicines
  • Aspirin
  • Tylenol
  • Antihistamines

Please REFRAIN from the following items the morning of the scheduled testing. These medications may be resumed immediately after the testing.

  • Muscle relaxants
  • Pain medications
  • Tranquilizers
  • Medications for nausea

If you are taking any of the following medications, please DO TAKE them prior to your testing:

  • Heart medication
  • Diabetic medication
  • Thyroid medication
  • Blood pressure medication
  • Seizure medication
  • Birth control medication
  • Antibiotics
  • Vitamins
  • Diruetics

If you have any questions regarding any medications that are not listed, please contact the office for specific instructions. Thank you.

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