Yeah, but that is rare.
That's only about 15%. How many were performed in 2006?
Once again, a disagreement in semantics. My daughter has Branchio Oto Renal Syndrome. That syndrome affects 1 in 50,000 people, which fits my definition of "relatively rare." 15 % is better than 1 in 7. I don't consider that relatively rare, especially when you are looking at a situation where the past couple of years leading up to the 2006 results, the numbers were substantially lower. The 15 % of bilateral implant recipients in 2006 in the US probably represents a total of slightly over 1000 patients, of which almost 200 got their approvals courtesy of our appeals program. Several hundred more of those 1000 likely got their approvals as a result of policy changes that took place as a result of our appeals.
It was reported at the April 2007 CI conference in Charlotte that the current # of bilateral implantations worldwide is over 5000, which over 3000 of those are in children.
PLUS, the difference in hearing with bilaterals is very minimal. Basicly sound localization, and abilty to hear in noise. It's not like a bilateral CI improves speech perception or whatever. It just seems like a lot of cost (for insurance, shareholders etc) for somewhat minimal benifit
Actually, studies show that bilaterals do improve speech perception. Please refer to Dr. Tyler's paper from April of this year which found:
"Results showed that all subjects received a significant bilateral improvement on at least one speech perception test compared to either implant alone."
Speech perception and localization with adults wit...[Ear Hear. 2007] - PubMed Result
and Dr. Kuhn-Inacker's paper from 2004 which found that:
"Qualitative and quantitative data show clearly that bilateral CI improves the children's communicative behaviour, especially in complex listening situations. Children examined with the speech in noise test scored significantly better under the bilateral condition compared to the unilateral condition. Integration of the second implanted side and use of binaural information was observed to be easier and faster in children with a short time lag between both implants. "
Int J Pediatr Otorhinolaryngol. 2004 Oct;68(10):1257-66
Finally, never discount the importance of the ability to localize sound -- I've lost track of how many stories I've heard about serious physical injuries that have happened due to the lack of ability to localize sound, or injuries that were avoided due to the recovered ability to localize sound.
Additionally, I receive almost continuous anecdotal reports from patients and parents of patients that we have previously done appeals who are reporting how much better/easier it is for the CI recipient after they received their second implant at work/school, and several whose children are achieving 90 % HINT scores with bilateral implants.
Remember, the cost to provide bilaterals to everyone is $1.25 per person per year, when averaged out over the entire country. You can't even get a cup of coffee at Starbucks for that. And if insurers covered more simultaneous bilaterals, the costs would be even lower, because of the average $22K reduction in OR fees, surgery fees, and rehab time due to both implants being done in one surgery over sequential procedures.
Sheri