Use of the VNG Device as an Adjunct to Diagnosis
During the period of time from March to September 2006, 741 patients were seen at The American Institute of Balance for vestibular and equilibrium evaluation. These patients all underwent assessment using the balanceback iVNG system. Information from the iVNG was an integral part of each evaluation. These diagnostic results were combined with information using the balanceback integrated case history forms to determine the origin of each patient’s symptoms.
Please see Figure 1 for a breakdown of diagnoses…
Importantly, the iVNG was also used during the treatment of these patients with BPPV. The iVNG was used at the posttreatment follow-up appointment to ensure that no otoconial debris had migrated to any adjacent semicircular canals during treatment.
In their report, The American Institute of Balance describes how they prepared the patients, and calibrated the VNG device. Then they performed the following balance tests:
- Smooth Pursuit
- Gaze with Vision-denied
- Gaze with Vision-enabled
- High-frequency Headshake
- Hallpike- Modified
- Hallpike- Side-lying
- Positionals- Vision denied
- Positionals- Vision enabled
- Body Right/Body Left Headshake
The AIB then reported on the twelve different balance problems that our VNG device diagnosed. Benign Paroxysmal Positional Vertigo (BPPV) was most frequently diagnosed. The VNG device also provided diagnoses associated with central nervous system involvement, and peripheral vestibular involvement.