|
Can You Hear Me Now?
New Baha® Procedure Brings Sound to the
Hearing Impaired
Hearing loss can rob you of some of life's simple joys: birds
chirping, babies cooing and your loved ones' voices. But hearing
loss affects more than your ears. It can throw off your balance,
degrade speech quality, lead to social isolation and impair your
ability to function.
The Baha® hearing aid, worn
behind the ear, attaches to a bone
in the inner ear to transmit sound
vibrations directly to nerves.
The causes of hearing loss are almost as
varied as those it affects – an estimated
28 million people in the United States
alone, according to the National Institute
on Deafness and Other Communication
Disorders (NIDCD). Whether brought
on by excessive noise, advanced age or a
health condition, local otolaryngologists
– physicians specializing in disorders of
the ear, nose and throat (ENT) – can help
many Holland-area residents regain some
or all of their hearing through a variety of
treatment options.
Cause and effect
"Most people with hearing loss, especially
older individuals, have sensorineural hearing
loss, which is a problem of the inner
ear. That's usually damage from either
loud noises or advanced age," explains
otolaryngologist Joseph Vandermeer, MD,
of Lakeside ENT. "Conductive hearing
loss is a problem of the outer or middle
ear and can be from chronic ear infections
that have damaged the middle ear and the
bones that transmit sound from the outside
to the inner ear."
Understanding the cause of hearing
loss is the first step in knowing how to
treat it.
Age-related hearing loss, or presbycusis,
affects approximately 31 percent of
Americans over the age of 65. Long-term
noise exposure, heredity, medicines and
health conditions such as heart disease
and diabetes can contribute to hearing
impairment as we age.
Noise-induced hearing loss results
from long or repeated exposure to sounds
at or above 85 decibels (about the level of
noise in city traffic). The NIDCD reports
that 10 million Americans have irreversible
noise-induced hearing loss, with 30 million more exposed to dangerous noise
levels every day. Many experts worry that
the popularity of MP3 players (such as
iPods), listened to at high volumes, may
greatly increase hearing damage in coming
years.
Ear infections can affect children's
hearing temporarily. But if left untreated,
the damage can become permanent. "Fluid
and ear infection in children can lead to
scarring and loss of the tiny bones of the
middle ear," explains otolaryngologist
Ted Vanderveen, MD, of Lakeside ENT.
What's more, chronic ear infections and
fluid buildup in the middle ear can impair
a child's hearing at a critical time for speech
and language development.
Health conditions may also damage
hearing. Heart disease, high blood pressure,
diabetes and other vascular conditions
may reduce the blood supply to the
ear and diminish hearing.
ENT physicians use a range of techniques
to treat hearing impairment. "For
conductive hearing loss, we can drain the
fluid and place a tube in the ear," says Dr.
Vanderveen. "We can remove wax, repair
holes in ear drums and replace bones in
the middle ear that have been eroded by
infection. For sensorineural hearing loss,
we offer hearing aids and surgical intervention
in severe cases."
Holland Hospital surgical staff is
well acquainted with such procedures: in
2006, they performed more than 1,200
ear, nose and throat procedures, notes
Kathy Shaneberger, director of Surgical
Services at Holland Hospital. "ENT
cases make up nearly 14 percent of all
operating room cases, making it the third
highest surgical specialty in our operating
room," she says.
Baha® – new help for your hearing
One of the newest procedures in hearing
reconstruction that has recently
become available at Holland Hospital
is bone-anchored hearing aids, or Baha®.
"This is an easy way to treat moderate to
severe conductive hearing loss," says Dr.
Vandermeer.
During the brief outpatient procedure,
doctors implant a small titanium screw
into the bone behind the ear. Over the
next six weeks, the bone grows in and
attaches to the titanium implant permanently.
Once this osseointegration has
occurred, an abutment is attached to the
fixture, and a small, external sound processor
is clipped on behind the ear. Unlike
a normal hearing aid that makes sounds
with a small speaker, the Baha processor
transmits sound vibrations directly to the
nerves, bypassing the outer and middle ear.
"It gives you the best hearing that your
nerves will allow," says Dr. Vandermeer,
who performed the minimally invasive
surgery for five years prior to joining
Lakeside ENT in 2007.
Dr. Vandermeer recently led Holland
Hospital surgical staff in training to bring
the Baha procedure to Lakeshore residents.
A special titanium drill required to
implant the titanium screw completes the
hospital's readiness to perform the procedure,
says Shaneberger.
While the effects of the Baha can be
dramatic and it has a high success rate,
Dr. Vandermeer cautions that the procedure
may not work for everyone. "Those
who will most benefit from this treatment
include individuals with chronic ear infections
that have destroyed the middle ear or
the bones in the middle ear, and when traditional
hearing aids only make the infections
worse," he says. "Also, people with
one-sided hearing loss may benefit from a
Baha. We place the implant behind the bad
ear and it transmits sound from one side
to the other ear, giving the wearer sensory
perception in the affected sound field."
If you suffer from hearing impairment, talk to
your doctor. He or she may refer you to an ENT specialist
for a hearing test and a discussion of your ear problems.
Home>
|