PE tubes, short for pressure equalization tubes, are tiny hollow cylinders made of plastic or metal that a surgeon places through the eardrum to ventilate the middle ear. They’re one of the most common childhood surgeries, typically recommended when a child has recurring ear infections or fluid that won’t drain on its own. You may also hear them called tympanostomy tubes, ventilation tubes, or ear tubes.
How PE Tubes Work
Behind your eardrum sits a small air-filled space called the middle ear. Normally, a narrow passageway called the eustachian tube connects this space to the back of your throat and keeps air pressure balanced on both sides of the eardrum. In young children, the eustachian tube is shorter, more horizontal, and more easily blocked, which means fluid can get trapped in the middle ear with no way out. That trapped fluid muffles hearing and creates a warm, stagnant environment where bacteria thrive.
A PE tube bypasses the eustachian tube entirely. By creating a small opening in the eardrum, it lets air flow directly into the middle ear and gives fluid a path to drain outward. This restores normal pressure, clears the fluid, and makes it much harder for infections to take hold.
When Doctors Recommend Them
Current clinical guidelines point to three main situations where PE tubes are appropriate: fluid in the middle ear that persists for three months or longer, frequent ear infections, or infections that don’t clear up with antibiotics. A single short episode of fluid buildup is not enough to warrant surgery. Doctors are specifically advised against placing tubes for fluid that has lasted less than three months.
For children with persistent fluid in both ears lasting three months or more, tubes are recommended when there’s documented hearing difficulty. Even without measurable hearing loss, tubes may be considered if the fluid is causing balance problems, behavioral changes, ear discomfort, poor school performance, or a noticeable drop in quality of life. For kids with recurrent infections, tubes are typically offered when fluid is still present in one or both ears at the time of evaluation.
A hearing test is standard before the procedure. This establishes a baseline and helps confirm that the fluid is actually affecting hearing, which it does in most cases.
What the Procedure Looks Like
The surgery itself is quick. It takes eight to 15 minutes on average and is performed under general anesthesia, usually delivered through a breathing mask rather than an IV. The surgeon makes a tiny incision in the eardrum, suctions out any trapped fluid, and slides the tube into place. There are no external incisions or stitches.
Children typically wake up within minutes and go home the same day. Some grogginess and mild irritability from the anesthesia are normal for a few hours afterward. Most kids return to normal activity within a day. Antibiotic ear drops are commonly prescribed after surgery to prevent infection at the tube site.
How Much Hearing Improves
The hearing benefit is often noticeable almost immediately, since draining the fluid removes the physical barrier that was blocking sound. In clinical studies, hearing improved by an average of 9 decibels in the first six months after tube placement, and by about 6 decibels at the 12-month mark. That difference matters more than it sounds. For a young child learning to speak, even a mild hearing reduction from fluid buildup can make it harder to pick up the soft consonant sounds that distinguish one word from another. Restoring those few decibels can meaningfully support language development during a critical window.
How Long PE Tubes Stay In
PE tubes are designed to fall out on their own as the eardrum heals and pushes them outward. The average tube stays in place for about nine months, though the range is wide: some come out in a few weeks, while others last over two years. Most parents never notice when a tube falls out. It’s small enough that it either drops into the ear canal and is spotted during a checkup or passes out unnoticed.
If a tube stays in significantly longer than expected and isn’t needed anymore, a doctor can remove it in a brief office procedure.
Water and Swimming After Tubes
Water precautions are one of the most debated topics among ear specialists, and practices vary widely. A survey of over 1,200 board-certified ear, nose, and throat doctors found that 53% recommended earplugs during swimming, 13% banned swimming entirely, and only 3% allowed unrestricted water activity.
The research, however, suggests many of these precautions are unnecessary. Showering, rinsing hair, and even briefly submerging the head in clean tap water do not reliably push water through the tube into the middle ear. Surface swimming in a chlorinated pool or saltwater is generally considered low risk. The situations that do increase the chance of water getting through include diving or swimming deeper than about two feet, exposure to soapy bathwater (which lowers surface tension and flows more easily through the tube), and swimming in lakes or other non-treated water where bacteria are more of a concern.
A practical approach: surface swimming in pools and the ocean is fine for most children, but earplugs or avoidance make sense for soapy baths, lake water, and any activity that involves going deep underwater.
Risks and Complications
PE tube insertion is considered very safe, but no surgery is risk-free. While the tubes are in place, the most common issues are blockage of the tube (about 7% of ears), tissue buildup around the tube (5%), the tube falling out too early (roughly 4%), and rarely, the tube slipping inward through the eardrum (0.5%).
After the tubes come out, the eardrum heals over in most cases. The most frequently seen long-term change is tympanosclerosis, a whitish scarring or calcification on the eardrum that shows up in about 32% of ears. This looks significant on an exam but rarely affects hearing. Focal thinning of the eardrum occurs in about 25% of ears. A small percentage develop a retraction pocket (3.1%), where part of the eardrum gets pulled inward.
The complication parents tend to worry about most is a persistent hole in the eardrum that doesn’t close after the tube falls out. With standard short-term tubes, this happens in only about 2.2% of ears. Long-term tubes, which are designed to stay in place for years and are used in more complex cases, carry a higher perforation rate of around 17%. A hole that doesn’t close on its own can be repaired with a minor surgical procedure later if needed.