Home | RSS

Links
Parenting Guide
WebMD Health Information
Health and Biology

Deafness types and treatment

Oct 09, 2011 > Various
Deafness is term used to describe complete or partial loss or absence of the ability to hear.

There are three major types of deafness

Conductive deafness is caused by a defect in the outer or middle ear, which prevents normal transmission of sound. It may be present at birth as the result of an inherited defect, an abnormality in development, or an infection of the fetus in the womb. It may be produced by an injury that perforates the eardrum or that breaks up the linkage of three tiny bones—hammer, anvil, and stirrup—that normally transmit sound from the eardrum through the middle ear to the inner ear. Inflammation of the middle ear, a condition known as otitis media, is another important cause of conductive deafness. Infection from an upper respiratory tract ailment, such as strep throat or the flu, can produce a buildup of pus in the middle ear so great that it ruptures the eardrum. Also, a plugged eustachian tube (the tube leading from the back of the throat to the ear) mat trap fluid in the middle ear, creating temporary deafness. Conductive deafness in the middle and later years is most often caused by otosclerosis. In this inherited condition, new spongy bone grows over the stirrup bone, preventing it from vibrating when sound travels to it through the hammer and anvil bones.

Deafness types and treatment Sensorineural deafness is a type of hearing loss that occurs because of damage to the structures of the inner ear, to the auditory nerve carrying sound messages to the brain, or the hearing center of the brain itself, located in the temporal lobe. It may be due to a head injury during birth, the effects of a woman’s rubella infection on her unborn baby, a skull fracture affecting the inner ear or the auditory nerve, fever, bacterial or viral infections (such as mumps or meningitis), tertiary (final stage) syphilis, Meniere’s disease, tumors, multiple sclerosis, a hemorrhage or blood clot in the inner ear, drug side effect, normal aging, prolonged or repeated exposure to intense noise, or edema(fluid buildup) caused by a thyroid deficiency. Most sensorineural deafness is not nerve deafness, the popular term for it. It is usually sensory deafness, caused by defects in the structure of the inner ear, especially in the cochlea and its organ of Corti. The cochlea contains sensory cells that convert sound waves into electrical impulses, which are transmitted via the auditory nerve to the brain.

Mixed deafness is a relatively common condition. It is a combination of conductive and sensorineural deafness.

People with pure conductive deafness simply need louder volume to hear all sounds. Those with defects in the inner ear usually can hear low-pitched sounds more easily than high-pitched sounds, and some sounds may be distorted. When there is damage to the hearing center in the brain, the person may be able to hear sounds, but has trouble recognizing them and understanding words (this problem can also occur with the other types of deafness).

Deafness Diagnosis

When hearing loss is suspected, a complete examination of the ears, nose, an throat is necessary to identify infections or abnormalities that may be present. Infections of the adenoids or tonsils, as well as sinus of nasal infections, may be linked to ear infections.

Testing of hearing is important for all ages, but especially for infants. Many times, partial deafness in a baby is not discovered until the child fails to learn to talk, a direct result of the hearing loss. Babies who were born prematurely or ill or whose mothers had certain viral infections, such as rubella, during pregnancy are in special need of testing.

Deafness Treatment

Although inborn hearing defects usually cannot be corrected, deaf children can be helped to deal with their handicap. Starting very early, they can be fitted with hearing aids and can be instructed in lipreading, speaking, and sign language.

Surgery to correct conductive hearing loss includes operations to replace the stirrup bone or all three tiny bones with tissue or synthetic material, to repair a punctured eardrum, and to clean a chronically infected middle ear.

A hearing aid can often help to restore hearing. However, one should be purchased only after thorough testing by a specialist in audiometry, who can suggest the most appropriate type. Classes in lipreading and listening can also be helpful.

Deafness Prevention

It is far easier to prevent deafness than to cure it. Antibiotics have made it possible to eradicate most of the middle ear infections that have been the major source of conductive hearing loss in children. Middle ear problems are also sometimes eliminated by treating allergies that cause the eustachian tubes to close up or by removing infected adenoids. Nerve deafness caused by continued exposure to intense industrial noise, gun shots, rock music, or aircraft engines may be avoided by wearing earplugs or other ear protectors. Some lost hearing may return after several months of relief form intense sound. Medications that can cause hearing loss, including some antibiotics and certain diuretics (drugs that stimulate the production of urine), need to be used with caution, and signs of hearing loss should be brought to a doctor’s attention as soon as they are noticed.

That's some stuff about Deafness types and treatment
Reference : (Chasnoff, Ira J, Jeffrey W. Ellis, Zachary S. Fainman. Family Medical & Health Guide .Publications International, LTD (1991) : 139-141)


Other Articles

Deafness types and treatment #0Cyclosporin
As we move on, drugs like CellCept and Prograf are replacing cyclosporin, but cyclosporin can take a normal person and give him tophaceous gout in about 24 months. Because it is a causer of renal insufficiency it also inhibits the secretion of uric acid by the kidney and resorption from uric acids, so it is a three-fold toxin in terms of developing gout in patients. It can develop raging tophaceous gout, and one of the problems was is that most patients with renal and heart transplant were on drugs such as Imuran and Cyclosporin, and Allopurinol interact with one another. You have a real difficult time of using Allopurinol on a patient and Azathioprine because of drug interactions and toxicities. These individuals are difficult to treat. Rapid in onset and have severe tophaceous gout.
Deafness types and treatment #1What is Vitamins
Vitamins are organic compounds (compounds made up of carbon atoms bonded to hydrogen atoms) that are necessary in small amounts for good health. The body can break vitamins down, but it cannot produce them. Vitamins have to be supplied in the diet. Unlike carbohydrates, fats, and proteins, vitamins yield no energy. Instead, some serve as catalysts that enable energy nutrients to be digested, absorbed, and metabolized. Some vitamins also interact with mineral. For example, vitamins C facilitates iron absorption, vitamin D improves calcium absorption, and thiamine requires the mineral magnesium to function efficiently.
Deafness types and treatment #2Enterohaemorrhagic Escherichia Coli EHEC
Escherichia coli O157:H7 is an enterohemorrhagic strain of the bacterium Escherichia coli and a cause of foodborne illness. Infection often leads to hemorrhagic diarrhea, and occasionally to kidney failure, especially in young children and elderly persons. Transmission is via the fecal-oral route, and most illness has been associated with eating undercooked, contaminated ground beef, swimming in or drinking contaminated water, and eating contaminated vegetables.
Deafness types and treatment #3Ambiguous Genitalia Wiki, causes and pictures
Are you looking for ambiguous genitalia wiki and pictures? The first concept that an examiner might want to know if they were asking the question - or if you were approached with the clinical thing - is that there are many different levels of sex, and not just chromosomes. We all tend to focus on chromosomes but that’s just one. Gonads, ovaries or testes? What are the internal ducts? What do the external genitals look like? What is the hormonal sex; androgen or estrogen circulating? And what is the psychosocial sex? All these things must be consistent in order to have a successful outcome of sex assignment.
Deafness types and treatment #4A Balanced Diet Plan Menu
Are you looking for a balanced diet plan menu? Eating a balanced diet means choosing a wide variety of foods and drinks from all the food groups. It also means eating certain things in moderation, namely saturated fat, trans fat, cholesterol, refined sugar, salt and alcohol. The goal is to take in nutrients you need for health at the recommended levels.
Deafness types and treatment #5Furosemide Side Effects and Dosage
Furosemide is a loop diuretic (water pill) that prevents your body from absorbing too much salt, allowing the salt to instead be passed in your urine. Furosemide treats fluid retention in people with congestive heart failure, liver disease, or a kidney disorder such as nephrotic syndrome. This medication is also used to treat high blood pressure. Here is some stuff about Furosemide Side Effects and Dosage.
Deafness types and treatment #6Medical abbreviations list
Are you looking for medical abbreviations list? Abbreviations are used very frequently in medicine. They boost efficiency as long as they are used intelligently. The advantages of brevity should be weighed against the possibilities of crypticness (making the communication harder for others to understand) and ambiguity (having more than one possible interpretation). Certain medical abbreviations are avoided to prevent mistakes, according to best practices (and in some cases regulatory requirements); these are flagged in the list of abbreviations used in medical prescriptions.
Deafness types and treatment #7Misophonia symptoms and treatment
What is Misophonia definition? Misophonia – literally the hatred of sound -can be defined as a hypersensitivity to background sounds or visual stimuli that are generally ignored by other people. More importantly than the individuals inability to block out the offending stimuli or “trigger” is the acute negative emotional response experienced as a direct result of being in contact with a trigger. Misophonia commonly occurs along with hyperacusis and/or tinnitus, but can appear by itself. One of the tools we use to treat misophonia at AC Associates is called Tinnitus Retraining Therapy (TRT). TRT recognizes the specific involvement of various components of the auditory pathways of the nervous system in occurrences of tinnitus, hyperacusis and misophonia. For treatment of misophonia, TRT uses a method based on the active removal of conditioned reflexive responses to sound, allowing patients to feel like themselves again.
Deafness types and treatment #8Hypertension Symptoms Diagnosis and Treatment
High blood pressure is defined as a systolic BP ≥ 140 or a diastolic BP > 90 on more than two occasions (see Table 3.5). Hypertension is associated with MI, heart failure, stroke, and kidney disease and has a higher prevalence among ethnic minorities, in women, and with ↑ age. As a screening measure, BP should be checked at least every two years starting at age 18.
Deafness types and treatment #9Kegel Exercises for Women, Benefits and Instruction
Are you looking for instruction and benefits Kegel Exercises for Women? A pelvic floor exercise, more commonly called a Kegel exercise (named after Dr. Arnold Kegel), consists of contracting and relaxing the muscles that form part of the pelvic floor, which are now sometimes colloquially referred to as the "Kegel muscles". Several tools exist to help with these exercises, though many are ineffective. Exercises are usually done to reduce urinary incontinence[3] and aid with childbirth in women, and reduce premature ejaculatory occurrences in men, as well as increase the size and intensity of erections.
Deafness types and treatment #10Fiber foods functions and consumption rule
The role fiber plays in promoting nutrition and health has been a controversial subject in recent years. What exactly is fiber? How effective is it in reducing certain health risks? Are certain types of fibers more effective than others? Fiber, often referred to as “bulk” or “roughage”, is the indigestible portion of plant foods that helps move foods through the digestive system and softens stools by absorbing water. Insoluble fiber, which is found in brain, wholegrain breads and cereals, and most fruits and vegetables, is associated with these gastrointestinal benefits and has also been found to reduce the risk for several forms of cancer. Soluble fiber appears to be a factor in lowering blood cholesterol levels, thereby reducing risk for cardiovascular disease. Major sources of soluble fiber in the diet include oat bran, dried beans (such as kidney, garbanzo, pinto, and navy beans), and some fruits and vegetables.
Deafness types and treatment #11Endometriosis Symptoms Checklist and Sign
Endometriosis is the abnormal growth of cells (endometrial cells) similar to those that form the inside of the uterus, but in a location outside of the uterus. Endometrial cells are cells that are shed each month during menstruation. The cells of endometriosis attach themselves to tissue outside the uterus and are called endometriosis implants. These implants are most commonly found on the ovaries, the Fallopian tubes, outer surfaces of the uterus or intestines, and on the surface lining of the pelvic cavity. They can also be found in the vagina, cervix, and bladder, although less commonly than other locations in the pelvis. Rarely, endometriosis implants can occur outside the pelvis, on the liver, in old surgery scars, and even in or around the lung or brain. Endometrial implants, while they can cause problems, are benign (not cancerous).
Deafness types and treatment #12Risk Reduction for Developing Cancer
Because cancer will probably continue to be the second most common cause of death among adults, it is important for you to explore ways of reducing your risk of developing cancer. The following factors, which could make you vulnerable to cancer, can be controlled or at least recognized.

Copyright (c) 2011 by DRZ
Privacy Policy | Contact Us