Pediatric & Newborn Testing

Most children hear and listen from birth. They learn to talk by imitating the sounds around them and the voices of their parents and caregivers. But that's not true for all children. In fact, about 2 or 3 out of every 1,000 children in the United States are born deaf or hard-of-hearing. More lose their hearing later during childhood. Many of these children may need to learn speech and language differently, so it's important to detect deafness or hearing loss as early as possible.

How early should I have my baby's hearing screened?

Your baby should have a hearing screening within the first month of life. If hearing loss is suspected, make sure a hearing expert, called an audiologist (aw-dee-AH-luh-jist) tests your baby's hearing by 3 months of age. If hearing loss is confirmed, it's important to consider the use of hearing devices and other communication options by 6 months of age.

Where can my baby's hearing be screened?

Many hospitals automatically screen all newborns for hearing loss. Some screen only those newborns at high risk for hearing loss, such as babies with a family history of deafness or hearing problems, low birth weight, or certain other medical conditions. Even if your baby doesn't have risk factors, being screened is important, because many children with no risk factors have hearing loss. Even children whose parents and grandparents hear normally may be born with a hearing loss. Find out what your hospital does. If you and your baby are already home and you don't know if your baby's hearing was tested, ask the doctor or the clinic where your baby's records are.

How will my baby's hearing be screened?

Two hearing tests are used to screen babies. In both tests, no activity is required from your child other than lying still.

Otoacoustic emissions (OAE) tests can show whether parts of the ear respond properly to sound. During this test, a sponge earphone is placed into the ear canal. The ear is stimulated with sound, and the "echo" is measured. The echo is found in everyone who hears normally. If there is no echo, it could indicate a hearing loss.

Auditory brain stem response (ABR) tests check how the brain stem (the part of the nerve that carries sound from the ear to the brain) and the brain respond to sound. During this test, your child wears earphones, and electrodes are placed on the head and ears. A mild sedative may be given to help keep your child calm and quiet during the test. The nurse or doctor sends sounds through the earphones and measures the electrical activity in your child's brain when he or she should be hearing.

Why is it important to have my baby's hearing screened early?

The most important time for a child to be exposed to and learn language is in the first 3 years of life. In fact, children begin learning speech and language in the first 6 months of life. Research suggests that those who have hearing impairment and get intervention have better language skills than those who don't. The earlier you know about deafness or hearing loss, the sooner you can make sure your child benefits from strategies that will help him or her learn to communicate.

How can I recognize hearing loss during early childhood?

Even though screening is designed to detect hearing loss as early as possible, some children don't develop hearing loss until later in life. In those instances, parents, caregivers, or grandparents are often the first to notice. Even if you've had your baby's hearing tested, you should look for signs that your baby is hearing well.
For example, during the first year, notice whether your baby reacts to loud noises, imitates sounds, and begins to respond to his or her name. At age 2, ask yourself whether or not your child plays with his or her voice, imitates simple words, and enjoys games like peek-a-boo and pat-a-cake. Is he or she using two-word sentences to talk about and ask for things? At age 3, notice whether or not he or she begins to understand "not now" and "no more" and follows simple directions. If for any reason you think your child is not hearing well, talk to your doctor.

If my child has a hearing loss, can hearing be improved?

A variety of assistive devices and strategies are helpful for children who are hard-of-hearing. Some examples of these devices are listed here. An audiologist can help you to determine whether these or other devices can help your child.

Hearing aids are instruments that make sounds louder. They are worn in or behind the ear and come in several different shapes and sizes. Hearing aids can be used for varying degrees of hearing loss, moderate or severe. An audiologist will fit a hearing aid that will work best for your child's hearing loss. Hearing aids can be expensive, so you'll want to find out whether they have a warranty or trial period. You'll also want to talk with your insurance provider to understand what is covered and what isn't.

Cochlear (COKE-lee-ur) implants have three parts: a headpiece, a speech processor, and a receiver. The headpiece is worn just behind the ear where it picks up sound and sends it to the speech processor. The speech processor, a beeper-sized device that can fit in a pocket or on a belt, converts the sound into a special signal that is sent to the receiver. The receiver, a small round disc about the size of a quarter that a surgeon has placed under the skin behind one ear, sends a sound signal to the brain.
Not all children who have hearing loss should get cochlear implants. Doctors and hearing experts think they're best for children who have a profound hearing loss and won't benefit from hearing aids.

As children get older, many other devices are available to help them hear. Some devices help children hear better in a classroom. Others make talking on the phone or watching television easier. For example, auditory training systems and loop systems can help eliminate or lower other noises and make it easier for your child to hear someone in a crowded room or group setting. Others, such as FM systems and personal amplifiers, are better for one-on-one conversations.

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