What is a Ventilation Tube?
A ventilation tube (also called a grommet, tympanostomy tube, or pressure-equalization tube) is a tiny hollow cylinder — typically 1–2 mm in diameter — that is surgically inserted through a small incision in the eardrum (tympanic membrane). The tube creates a permanent artificial pathway for air to enter the middle ear space, bypassing the Eustachian tube entirely. This ventilation prevents the accumulation of fluid in the middle ear, normalizes middle ear pressure, and restores hearing to normal.
Ventilation tube insertion (myringotomy and tube) is one of the most commonly performed surgical procedures in pediatric ENT practice worldwide, and is the standard surgical treatment for otitis media with effusion (OME, or "glue ear") and recurrent acute otitis media in children.
When is a Ventilation Tube Needed?
- Otitis media with effusion (glue ear): Fluid that has been present in the middle ear for 3 months or longer, particularly when associated with hearing loss of 25 dB or more in the better-hearing ear.
- Recurrent acute otitis media: Three or more episodes in 6 months, or four or more episodes in 12 months, that are causing significant impact on the child's hearing, language development, quality of life, or school performance.
- Eustachian tube dysfunction with retraction: When the eardrum is being progressively retracted inward due to chronic negative pressure, a ventilation tube restores middle ear pressure and prevents the progression to cholesteatoma.
- Barotrauma: For patients who suffer recurrent middle ear barotrauma during air travel or diving due to Eustachian tube dysfunction.
Types of Ventilation Tubes
Short-Stay Tubes (Grommets)
Grommet-type tubes are designed to remain in place for approximately 6–12 months before spontaneously extruding as the eardrum's natural healing process pushes the tube outward. They are the first choice for most children with OME or recurrent acute otitis media, as they provide ventilation during the critical early years of language development and are self-eliminating.
Long-Stay Tubes (T-Tubes)
T-tubes have flanges on both sides of the eardrum and are designed to remain in place for 15–24 months or longer. They are preferred for children with severe, refractory Eustachian tube dysfunction, significant eardrum retraction, or after previous grommet failures. They typically require surgical removal under a brief anesthetic when no longer needed.
The Procedure
Myringotomy and tube insertion is performed under brief general anesthesia (5–10 minutes total). Through a speculum placed in the ear canal, the surgeon makes a small incision in the lower half of the eardrum, suctions any fluid from the middle ear, and inserts the tube. No external incisions are made, and no stitches are required. Children are typically discharged 1–2 hours after the procedure and return to normal activities the following day.
Critical Post-Operative Precaution: Water Protection
Water must be kept out of the ear while the ventilation tube is in place. Since the tube creates a direct open pathway from the external ear canal to the middle ear, contaminated water entering the ear canal can pass directly into the middle ear and cause an acute infection (otitis media). Parents should ensure that during bathing and hair-washing, the ears are protected with cotton wool moistened with petroleum jelly placed at the entrance to the ear canal. Swimming should be avoided entirely, or only permitted with properly fitted custom ear plugs. This precaution must be maintained from the day of surgery until the physician confirms the tube has extruded and the eardrum has healed.
Frequently Asked Questions
Will my child hear normally after the tubes are inserted?
In the vast majority of cases, hearing improves dramatically within days of tube insertion as the middle ear fluid drains. Most children with OME-related hearing loss return to normal hearing thresholds immediately after the procedure.
What happens when the tube falls out?
In most cases, the small perforation in the eardrum heals spontaneously within days to weeks after the tube extrudes. The hearing should remain normal as long as the Eustachian tube has matured sufficiently. The child is followed with periodic hearing tests and otoscopy to confirm healing.
