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Author: admin, 16.04.2016. Category: Buzzing In Ears

Click here to download “Your Guide to Prevention of Hearing Loss From Noise”IntroductionNoise is one of the most common causes of hearing loss, and one of the most common occupational illnesses in the United States.
Noise-induced hearing loss is the result of being exposed to excessively loud sound over a long period of time—such as working in a factory, using a chainsaw for hours, or riding a motorcycle or snowmobile, all without hearing protection. Hearing loss from noise exposure can be instantaneous, such as from gunshots, firecrackers and other impulse noises. An easy rule of thumb that can be used to assess whether the continuous noise in an area could potentially cause hearing loss is to determine if you have to raise your voice in order to be heard when speaking to someone three feet away. The most important thing to note is that noise-induced hearing loss is totally preventable! If you are trying to protect your hearing from loud music, then consider custom Musician’s Earplugs. Custom earplugs can also be made for dentists, flight attendants, pilots, bartenders, motor sports enthusiasts, DJs, band members, etc.
If you believe you may be losing your hearing due to noise, regular audiometric testing can provide early detection. Remember that it is always better to hear with your own good hearing than to rely on hearing aids! A potentially permanent hearing loss that affects tens of millions of patients, especially those who are exposed daily to high noise levels. Frequent and long duration of exposure to loud sounds such as in industry, loud music, power tools, lawn mowers or firearms. Minimize exposure to loud sounds, such as reducing the volume when listening to television or music .
A single shot from a large caliber firearm, experienced at close range, may permanently damage your hearing in an instant.
Our hearing system is designed to detect and process sounds over a remarkably wide range of levels. Turn down the volume when listening to music if possible, especially if you are using an iPod or other similar device via earbuds.
Traditional hearing protection typically decreases higher frequency sounds disproportionately. Why go through all the effort to wear hearing protection when it does not provide adequate attenuation? If your hearing continues to decrease, you are in a great position to take more aggressive steps to prevent additional loss. Repeated exposures to loud machinery may, over an extended period of time, present serious risks to human hearing. One can appreciate that early humans with better hearing could hear a predator or enemy trying to sneak up on them and “get the jump on them” and so have the greatest opportunity to survive and have offspring with good hearing. Such hearing loss is insidious, gradually robbing the exposed person of high frequency sounds, such as the s, th, ch. Have some type of hearing protection easily available in your garage when you are picking up that weed-whacker or hopping onto your riding lawnmower. When deciding between the various pre-packaged hearing protection, look for an NRR (Noise Reduction Rating) value or ask your audiologist.
According to the National Institute on Deafness and Other Communication Disorders (NIDCD):10 million Americans have already suffered irreversible hearing damage from noise30 to 50 million more are exposed to dangerous noise levels each day.Why has this problem become so widespread? So it becomes difficult to differentiate “ace” from “eight” and “fifty-six” from “sixty-six.” Women’s and children’s voices will also be more difficult to understand.
Put spare earplugs in the glove box of your car and bring them into the movie theater or to that concert you are attending. The higher the number, typically the better the effectiveness, assuming the earplugs fit well and are used appropriately. Musician’s earplugs have a filter that reduces the sound equally across the frequency range.
Unfortunately, the effects of noise are often underestimated because the damage takes place so gradually, loud noises have become so common in our culture, and (although traumatizing to the parts of the body responsible for hearing) there are no externally-visible physical changes (like bleeding). The eardrum and ossicles amplify the vibrations and carry them to the inner ear (specifically, the “cochlea”), which is a fluid-filled chamber locked inside the skull. As a result, people have traditionally not appreciated the serious impact of noise-induced hearing loss (NIHL) on their daily living until they’re frustrated by a permanent communication problem or ongoing ringing in their ears. These vibrations through the middle ear can be dampened when loud sounds cause a contraction of two tiny muscles attached to the middle ear bones, but this action is not fast enough to offer protection from sudden bangs and cannot be sustained during long exposures.Inside the cochlea are very specialized sensory cells, called “hair cells” which are responsible for our remarkable ability to detect very soft sound and tolerate reasonably loud sound. Perhaps a bit too late, they then become passionate about “hearing conservation” in order to save the hearing they still possess. We are born with a full complement of cells (about 17,000); if these cells are damaged, they are not replaced with new cells.

Doesn’t it make more sense, though, to emphasize “HEARING LOSS PREVENTION”, while you still have good hearing sensitivity? If they are damaged or dirty, throw them away.Sound isolating earphones with universal-fit ear tips. These earphones provide considerable sound isolation to most people, therefore the volume on MP3 players may be set lower.
This motion stimulates the top portion of the hair cells, which results in chemical changes that produce nerve impulses. Noise cancelling headphones are also available which do a great job of cancelling steady state noise such as on an airplane. These nerve impulses are carried along the hearing nerve to the brain, where they are interpreted as sound.
In some ways, age-related hearing loss (presbycusis) is “lifetime wear and tear” on hearing.
When an individual is exposed at work or at home to harmful sounds – sounds that are too loud for too long a time - sensitive structures of the inner ear can be damaged, causing noise-induced hearing loss (NIHL). They may be flanged or cone-shaped and are often joined by a cord so that they're not easily lost. When the hearing system is exposed to excessive noise, mechanical and metabolic changes can occur from this stress. However, the hearing loss may not necessarily occur equally between the left and right ears when the exposure conditions favor one side of the head.
Scientific research, based on studies of industrial workers, as well as lab studies of humans and animals, have investigated the effects of noise on hearing. A common example of “asymmetric” NIHL is from shooting a rifle or shotgun (a right-handed shooter often has poorer hearing in the left ear, which is closer to the muzzle than the right ear). This work has determined that, after excessive noise has stimulated cells in the inner ear, chemical processes occur that can exceed the cells’ tolerance, damaging their structure and function.When sound is sufficient to cause hearing loss, most often there is a temporary loss of hearing sensitivity, known as temporary threshold shift (TTS). You likely have experienced this after attending a loud concert or working with loud tools or machinery.
If the ear is given time to rest (typically 16 to 48 hours of relative quiet) the TTS recovers back to baseline hearing.
With repeated occurrence, this TTS does not recover, and instead becomes a permanent threshold shift.
The soft plastic cushions, filled with foam or liquid, should form a good seal against noise. How quickly this happens varies from one person to the next, and depends on how high was the offending sound exposure.While earlier we have explained the mechanisms of hearing, it would be useful to review these principles in terms of how noise can lead to permanent hearing loss damage.
Our hearing system is designed to detect and process sounds over a wide range of levels, but probably not for the extremely loud noises that occur in our modern world.
Acoustic signals enter through the outer ear, funneled by the pinna (the external part of the ear that we can see) and external ear canal.
This funneling causes a "resonance" (like that created when you blow across the top of a glass bottle) which boosts energy in high frequencies, about 2000 Hertz (heard as a high pitch). The energy then reaches the middle ear where it causes the eardrum to vibrate three tiny bones, called the ossicles, in the middle ear. The eardrum and ossicles amplify the vibrations and carry them to the inner ear or cochlea, which is a fluid-filled chamber locked inside the inner ear. When communication is required with hearing protection, special-purpose earmuffs may help you understand speech from co-workers or those transmitting signals to you by radio. These vibrations can be dampened when loud sounds cause a contraction of two tiny muscles attached to the middle ear bones, but this action is not fast enough to offer protection from sudden bangs and cannot be sustained during long exposures.
Advances in active noise reduction may be effective in reducing low frequency noises that can interfere with speech. The vibrations move through the fluid in the cochlea, which contains about 20,000 sense cells of hearing, called the hair cells.
Movements in the fluid stimulate the top portion of the hair cells, which causes chemical changes that produce nerve impulses.
Musicians and music enthusiasts may prefer to use a type of earplug that is designed to match the ear’s natural response, making sound quieter but not distorted. Filters in these Musicians EarplugsTM use a diaphragm that reduces noise levels relatively equally across all frequencies. The brain uses the incoming nerve impulses in an elegant interpretation of which, when and how many hair cells are stimulated. While these earplugs may be washed with water and mild soap, the filter should never be exposed to water. Cells around the now missing hair cell serve as “scar tissue” to maintain the structural integrity of the system, but these supporting cells do not contribute to the active process of hearing.

This damage results in sensorineural hearing loss and, often, tinnitus.What are the symptoms of NIHL?NIHL develops gradually so that people may lose a significant amount of hearing before becoming aware of its presence. During the early stages, sufferers often report having to turn up the volume on the TV or have difficulty understanding speech in groups or in the presence of background noise.
Never use alcohol or solvents to clean the sleeves.Custom in-ear monitor, made of a silicone material.
As the hearing loss worsens, it becomes difficult to understand normal conversation even in quiet, one-on-one situations.
The individual may not be aware of the high frequency hearing loss, but it can be detected with a hearing test. Musicians can also use custom in-ear monitors to hear themselves rather than through the floor "wedge" loudspeaker monitors.
This results in lower levels on stage and if the earpiece is tightly sealed to the ear without venting, it can serve as a hearing protection device.
Although hearing normally declines with age, the average, healthy, non-noise-exposed person can have essentially normal hearing at least up to age 60.
A variation for the normal consumer can be obtained from hearing health professionals for simply listening to MP3 players; the devices can be made of silicone or acrylic (although silicone seals in the ear better and most often provides better sound isolation). While research has shown some trends, there currently is no reliable way to identify which particular individuals may be most susceptible to NIHL.
Keep the sound ports that fit in the ear canal clear of earwax and use a “wax loop” tool to remove wax. To protect themselves when exposed to hazardous noise, everyone should take these precautions:Know which noises can cause damage (those above 85 decibels), including jet engines, lawn mowers, motorcycles, chainsaws, powerboats, and personal listening devices (like MP3 players). If you have to raise your voice to shout over the noise to be heard by someone within an arm’s length away, the noise is probably in this range. More formal noise measurements can be made (and are required in most industries), to determine risks from noise exposures. Consider using a desiccant (moisture absorber) container if you sweat a lot during performance.Preventing noise-induced hearing lossIf you’re exposed to hazardous noise on the job, your employer may already be providing annual hearing tests to identify any change in hearing that might indicate under-protection from the noise. The noise thermometer below shows you the relative risk associated with certain noisy environments.If possible, try to reduce noise at the source. Sometimes, replacing mufflers, keeping equipment in good maintenance, or placing the machine inside an enclosure can shield a person from the risks of NIHL. Although noise exposures are hazardous, other medical causes for hearing loss should be ruled out by a qualified health care provider, using data from your hearing test and your history.Be alert to hazardous noise. When purchasing new tools and yard equipment, consider their noise outputs before buying units with ineffective mufflers.Personal listening devices (like MP3 players with earphones) can also present risks to hearing if used at too high a volume for too long. Since prevention is so critical, make sure that your family (especially children), friends, and colleagues are aware of the hazards of noise.
Consider using earphones that block out background noise to help you moderate your listening level, and give yourself listening breaks if you do choose to listen loud.
Although animal research with drug therapies and the physiology of the hearing system may eventually lead to the development of treatment strategies to reduce NIHL, the most fundamental recommendation is the best. Some devices exist on the market which limit the volume that can be output by the MP3 player, virtually making them kid-proof.Wear hearing protection devices (HPDs) such as earplugs or earmuffs, when involved in loud activities (at work or when involved in noisy recreational activities). One-third of permanent hearing loss is preventable with proper hearing loss prevention strategies.PROTECT THE HEARING THAT YOU HAVE NOW!ReferencesANSI (1996). American National Standard: Determination of occupational noise exposure and estimation of noise-induced hearing impairment. HPDs are required by law to be labeled with a Noise Reduction Rating (NRR) that is based on performance obtained under ideal laboratory conditions.
Usually, people obtain far less protection than the labeled rating because they don’t wear the devices correctly or neglect to wear them during the entire period of the noise exposure.
It must be emphasized that the best hearing protector is not the one with the highest NRR, but the one that people will consistently wear whenever exposed to loud noise.
There is no single protector that will fit everyone, be universally comfortable, and be appropriate in every environment. What follows are some typical HPD options, as well as some special-purpose options, that you may consider. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication 98-126.National Institute on Deafness and Other Communication Disorders (1999).

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