Ear tubes are typically recommended when fluid behind the eardrum persists for three months or longer, or when a child experiences frequent ear infections that keep coming back despite treatment. The decision isn’t based on a single bad infection. It’s based on a pattern: fluid that won’t drain, hearing that’s affected, or infections that antibiotics can’t keep up with.
The Three-Month Rule for Persistent Fluid
The most common reason for ear tubes in children is fluid trapped behind the eardrum, a condition called otitis media with effusion. This fluid can linger after an ear infection clears or appear without any infection at all. Clinical guidelines are clear: a single episode of fluid lasting less than three months is not a reason for tubes. Instead, doctors should watch and wait.
If fluid remains in both ears for three months or longer, tube placement is a recommended next step. The clock starts either from the date the fluid was first noticed or from the date it was diagnosed, whichever is known. This three-month observation period exists specifically to avoid unnecessary surgery, since many cases of middle ear fluid resolve on their own.
When fluid sits in only one ear, the decision is less automatic. Tubes may still be appropriate if the child has symptoms tied to the fluid, such as balance problems, ear discomfort, behavioral changes, poor school performance, or a noticeable dip in quality of life. A flat reading on a tympanogram (a quick pressure test of the eardrum) can also signal that the fluid is unlikely to clear without help.
Recurrent Ear Infections
Frequent ear infections are the other major trigger. If your child keeps getting acute ear infections and still has fluid in one or both ears at the time the doctor evaluates them for tubes, surgery is a reasonable option. The pattern doctors look for is infections that recur despite completing antibiotics, not just one or two rough months.
Ear infections that don’t respond to antibiotics at all are also a signal. When the infection persists after a full course of treatment, tubes can bypass the problem by giving the middle ear a direct pathway for drainage and ventilation, reducing the conditions bacteria thrive in.
How Hearing Loss Factors In
Fluid behind the eardrum muffles sound. It’s like trying to hear underwater. The clinical threshold that supports tube placement is hearing loss greater than 30 decibels. For context, that’s roughly equivalent to having your ears plugged with your fingers during a normal conversation. You’d catch the general idea but miss a lot of the words.
In young children, this level of hearing loss matters more than it might sound. Kids between ages one and three are in the steepest part of their language learning curve. Months of muffled hearing during that window can make it harder to pick up new words and sounds. That said, a large study published in the New England Journal of Medicine followed children up to age 11 and found that prompt tube placement didn’t produce better cognitive, language, or speech outcomes compared to waiting and placing tubes later if needed. The takeaway: tubes help restore hearing in the short term, but a few months of watchful waiting before surgery doesn’t cause lasting developmental harm in otherwise healthy children.
Children With Higher Risk
Some children get a shorter leash on the “watch and wait” approach. Kids with developmental delays, Down syndrome, cleft palate, vision problems, or autism spectrum disorder are considered at higher risk because they’re already working harder to process language and sensory input. For these children, tubes may be offered sooner if fluid persists and is likely to stick around, even without the full three-month observation that applies to lower-risk kids.
When Adults Need Ear Tubes
Ear tubes aren’t just for children. Adults can develop persistent fluid or eustachian tube dysfunction, where the tiny channel connecting the middle ear to the back of the throat doesn’t open and close properly. This causes pressure, muffled hearing, and sometimes pain, particularly during altitude changes on flights or while diving.
Tubes are also placed in adults undergoing hyperbaric oxygen therapy. If pressure-related ear symptoms develop during the first treatment session, tubes are typically placed before continuing. For adults with known eustachian tube dysfunction, tubes may be placed preventively before situations that would cause barotrauma.
One practical difference: adults can often have the procedure done in the doctor’s office under local anesthesia, while children almost always require general anesthesia in an operating room.
What the Procedure Looks Like
The surgery itself is fast. The entire process typically takes fewer than 15 minutes. A tiny incision is made in the eardrum, any trapped fluid is suctioned out, and a small tube is placed in the opening. It’s an outpatient procedure, so you or your child goes home the same day.
Children may be groggy or off-balance for the rest of the day from the anesthesia, but there are no activity restrictions beyond resting that first day. A small amount of clear or slightly yellow drainage from the ear is normal for a day or two afterward, and you might see a trace of blood. This isn’t cause for alarm.
Short-Term vs. Long-Term Tubes
There are two general categories. Short-term tubes are small and designed to stay in the eardrum for 8 to 15 months before the ear naturally pushes them out. These are the most commonly placed type. Long-term tubes have a different shape (often called T-tubes) that anchors them in place for 15 months to two years. Long-term tubes are typically reserved for children who’ve already had short-term tubes fall out and then needed them again, or for cases where longer ventilation is expected to be necessary. Long-term tubes sometimes need to be removed by a doctor rather than falling out on their own.
Life After Tubes
The openings in ear tubes are small enough that casual water exposure isn’t a problem. Surface swimming in a clean pool doesn’t require earplugs. Bath time needs a little more caution: avoid pouring water directly into the ears or submerging the head, since soapy water passes through the tube openings more easily than clean water. A few splashes are fine.
Most tubes fall out on their own as the eardrum grows and pushes them out. The eardrum heals closed behind them. The rate of a persistent hole in the eardrum after a tube falls out is low, ranging from less than 1% to about 4%. Some children develop minor scarring on the eardrum (visible on exam but rarely affecting hearing). A small percentage of kids will need a second set of tubes if fluid or infections return after the first set comes out.
Signs It Might Be Time
If you’re weighing whether tubes are warranted, here are the situations where the evidence supports moving forward:
- Fluid in both ears for 3+ months with or without hearing loss
- Fluid in one or both ears for 3+ months with symptoms like balance issues, ear pain, behavioral changes, or school difficulties
- Recurrent ear infections with fluid still present at the time of evaluation
- Ear infections that don’t clear after antibiotic treatment
- Hearing loss greater than 30 decibels caused by middle ear fluid
- Higher-risk children with persistent fluid that’s unlikely to resolve
A single ear infection, even a painful one, is not an indication for tubes. Neither is a brief episode of fluid that’s been present for less than three months. The procedure works best when it addresses a chronic or recurring pattern rather than a one-time event.