Eardrums are thin pieces of tissue deep in your child's ears. The space behind the eardrum is called the middle ear. It is connected to the back of the nose by a tube. This tube is called the eustachian tube. It allows air to fill this space and fluid to drain from the middle ear.
But sometimes these tubes don't work well. This may be from allergies, infections, such as colds, or enlarged adenoids. Adenoids are soft tissue behind the nose that helps your child fight infection. As a result, fluid can build up behind the eardrums. This can cause pain and hearing loss.
During ear tube insertion, your child's doctor places a tiny tube into the eardrum to let fluid leave the middle ear. It also lets air enter the middle ear through the eardrum. By the time these tubes come out, the body's natural passageway from the middle ear to the back of the nose may be working better. But sometimes another tube will need to be placed.
These ear tubes are called tympanostomy tubes. They are small tubes made of plastic or metal. The doctor may insert tubes that fall out on their own after 6 months to a year. Another kind is made to stay in place longer. The doctor may need to remove that later.
Sometimes doctors also remove the adenoids during the same surgery.
The most common ages for ear tube placement are from ages 1 to 3. By age 5, most children have wider and longer eustachian tubes. These let fluids drain more easily from the ear.