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22.07.2014

Tinnitus ear wax, tinnitus cures that work - .

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Barotrauma can affect several different areas of the body, including the ear, face and lungs. Inner ear decompression sickness (IEDCS) is an injury that closely resembles inner ear barotrauma; however, the treatment is different.
Barotrauma is caused by a difference in pressure between the external environment and the internal parts of the ear.
The outer ear is an air-containing space that can be affected by changes in ambient pressure (see Figure 1). The most common problem that occurs in diving and flying is the failure to equalize pressure between the middle ear and the ambient environment (see Figure 2).
As a diver descends to only 2.6 feet with difficulty equalizing the pressure of his middle ear space, the tympanic membrane and ossicles are retracted, and the diver experiences pressure and pain (see Figure 3).
Inner ear injury during descent is directly related to impaired ability to equalize the middle ear pressure on the affected side. The implosive mechanism theory (see Figure 4) involves clearing of the middle ear during descent. The explosive theory (see Figure 5) suggests that when a diver attempts to clear a blocked middle ear space by performing a Politzer maneuver and the eustachian tube is blocked and locked, a dramatic increase in the intracranial pressure occurs. For outer ear barotrauma, the treatment consists of clearing the ear canal of the obstruction, and restricting diving or flying until the blockage is corrected and the ear canal and drum return to normal.
For middle ear barotrauma, treatment consists of keeping the ear dry and free of contamination that could cause infection. Prevention of air barotraumas to the middle ear has been attempted with dasal decongestants or vasoconstrictors with mixed results.


For inner ear barotrauma, treatment consists of hospitalization and bed rest with the head elevated 30 to 40 degrees. If barotrauma results from diving, you should not to return to diving until your ear examination is normal, including a hearing test and the demonstration that the middle ear can be autoinflated. The American Hearing Research Foundation is a non-profit foundation that funds research into hearing loss and balance disorders related to the inner ear, and to educating the public about these health issues.
It is caused by a difference in pressure between the two middle ear spaces, which stimulates the vestibular (balance) end organs asymmetrically, thus resulting in vertigo. Since fluids do not compress under pressures experienced during diving or flying, the fluid-containing spaces of the ear do not alter their volume under these pressure changes. Equalization of pressure occurs through the eustachian tube, which is the soft tissue tube that extends from the back of the nose to the middle ear space. Sudden, large pressure changes in the middle ear can be transmitted to the inner ear, resulting in damage to the delicate mechanisms of the inner ear. The pressure is transmitted from an inward bulging eardrum, causing the ossicles to be moved toward the inner ear at the oval window. Since the fluids surrounding the brain communicate freely with the inner ear fluids, this pressure may be transmitted to the inner ear. If the history indicates ear pain or dizziness that occurs after diving or an airplane flight, barotrauma should be suspected. The alternobaric response can also be elicited by forcefully equalizing the middle ear pressure with the Politzer maneuver, which can cause an unequal inflation of the middle ear space.
However, the air-containing spaces of the ear do compress, resulting in damage to the ear if the alterations in ambient pressure cannot be equalized.


An obstruction such as wax, a bony growth, or earplugs can create an air-containing space that can change in volume in response to changes in ambient pressure.
This pressure wave is transmitted through the inner ear and causes an outward bulging of the other window, the round window membrane. A sudden rise in the inner ear pressure could then cause the round or oval window membrane to explode.
The diagnosis may be confirmed through ear examination, as well as hearing and vestibular testing. A trial evaluating the effect of these earplugs found them to have no effect on eustachain tube function (Jumah et al 2010). Pressure-equalizing earplugs do not prevent barotrauma on descent from 8000 ft cabin altitude.
During descent, the volume of this space decreases causing the tympanic membrane to bulge outward (toward the outer ear canal).
If a diver performs a forceful Politzer maneuver and the eustachian tube suddenly opens, a rapid increase in middle ear pressure occurs.
If the eustachian tube demonstrates chronic problems with middle ear equalization, the likelihood of recovery is drastically reduced.



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