VERTIGO LABORATORY
Vertigo, derived from the Latin verb "to turn", is one of the frequently encountered health problems. Balance disorders are generally described by patients as a real feeling of spinning (vertigo) or a feeling of unsteadiness (dizziness).
In the diagnosis of vertigo, a history of the disease is required. It is very important. Since vertigo is not a disease but a symptom of a disease, a detailed history of the patient who applies to our clinic with a complaint of dizziness is first listened to in order to understand the nature of the dizziness you are experiencing. What the patient tells about the dizziness he experiences gives very important clues in the diagnosis. Then a detailed examination is performed. Then, if necessary, Videonystagmography (VNG) and VHIT tests are performed, which are important diagnostic tools in the diagnosis of vertigo.
Videonystagmography (VNG)
Dizziness, drowsiness and balance disorders are involuntary symptoms called nystagmus. causes eye movements. Basically, VNG is a group of test batteries based on the evaluation and recording of eye movements that occur as a result of some stimuli.
In the VNG test, the patient is made to wear glasses with an infrared camera on them. Thanks to these glasses, the patient's eye movements at rest and during various visual and vestibular stimuli are tracked and recorded on the computer. The information obtained is then analyzed in a computer environment to obtain very important information about dizziness. According to VNG test content; The test may take between 30 minutes and 1 hour.
IMPORTANCE OF VNG TEST IN DIAGNOSIS OF VERTIGO DISEASE
Does VNG test dizziness originate from the inner ear (peripheral)? Or does it originate from the central nervous system (central)? It answers the question.
VNG is an important test, especially in the diagnosis of BPPV (inner ear crystal shift). During maneuvers performed on the patient in sitting and lying positions; Camera recordings taken from the patient's eye movements provide information about whether the patient has BPPV or not, and if so, in which semicircular canal of the inner ear the problem is located. After the evaluation, which inner ear semicircle If a problem is detected in the canal, dizziness disappears in a short time with special maneuvers made for it.
Video Head Impulse Test (vHIT)
The semicircular canals in the inner ear are used throughout the body. It acts like a spirit level in a position and sends warnings to the brain and keeps the body's muscles and posture in balance by regulating it. There are a total of six semicircular canals, three in each ear. The most important feature of the video head impulse test is that it provides the opportunity to separately evaluate and analyze the semicircular canals, which are three in each ear. For the test, the patient wears glasses with a camera that records eye movements. The eye movements that occur during head movements while the patient is looking at a fixed point are transferred to the computer environment via the camera and analyzed.
Read: 0
