ICS Impulse AAA preview - Who knew an interesting case study would be revealed?

On  March 29th we previewed the ICS Impulse at the American Academy of Audiology.  It garnished a lot of interest and excitement.  And we look forward to launching ICS Impulse in the US.  We had a interesting experience at the Otometrics booth.  A long time customer stopped by the booth and asked if I would test her using the ICS Impulse.  Of course!  So I placed the goggles on her head and began performing head impulses.  As the data was being collected I curiously asked “Do you have a known disorder?”  Yes she replied.  She has suffered from Meniere’s disease and as a result had a labyrinthectomy on her left side.  She still has Meniere’s disease on the right side.   It was exciting to see ICS Impulse perform exactly as we would have expected. (full dx history below)

On the left side we have mostly covert saccades present and some overt saccades and a mean gain of 0.64.



On the right side we an increase in gain and a mean gain of 1.31.  This has been reported before in Manzari L, Burgess AM, MacDougall HG, Bradshaw AP & Curthoys I  Rapid fluctuations in dynamic semicircular canal function in early Meniere’s disease.  Eur Arch Otorhinolaryngol  14 Dec 2010.


Of course we are proud of our product but in reading our customer’s history two thoughts came to mind

1)      I was impressed by this amazing woman.  She had been through so much and she was one of the most upbeat, friendliest people you could meet.  She would be a fantastic role model for anyone who suffers from vestibular disorders.

2)      This is exactly why most of us do what we do.  We want to make a difference and help people.  As many of us do we get bogged down with the daily tasks of work but it is nice to be reminded why we worked so hard.  Our products help our customers help their patients.  And this is what is important!

Diagnostic history as reported by our customer

“. At about age 10, I had a sudden onset SNHL, left ear (had a cold at the time-was selling girl scout cookies when I felt my ear “pop”). I was diagnosed with a mild to moderate hearing loss that never resolved. My discrimination was very poor, compared to what would be expected with this degree of loss. Hearing was stable for 10 years. At age 20, I had a sudden onset of vertigo (otolith crisis-would have fallen to ground if had been standing). Within six months, I had hearing that fluctuated and then decreased to severe-profound SNHL (diagnosed with delayed endolymphatic hydrops). My first surgery was fistula repair (this didn’t help). My second surgery, 8 months after fistula repair, was trans-canal labyrinthectomy (Apr 1994). I never fully compensated and then symptoms returned.  The symptoms worsened and I was sick again (vertigo several days/week, lasting hours). I had a labyrinthectomy completion trans-mastoid (12/1997). I felt better until 5/1998 when I started to have episodes of vertigo again (less severe than pre-op). I was diagnosed with Meniere’s for good (right) ear. My hearing fluctuates within normal limits in low frequencies and I have tinnitus and aural fullness. I still get episodic vertigo lasting hours which occurs on and off, 2-10 days at a time with about 6 weeks in between. My right side is impaired and I have been test with rotary chair which showed really bad gain 0.01-0.04 Hz (may even be 0.08…I don’t remember–I was just surprised at how bad it was). Bilateral Meniere’s is usually auto-immune. I have Grave’s disease, asthma and terrible allergies (allergic to everything that grows outside…grass, trees, weeds…all of it).


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