Myringotomy & Grommets — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

Myringotomy is a minor ENT surgical procedure in which a small incision (myringotomy incision) is made in the eardrum (tympanic membrane) to drain accumulated fluid from the middle ear space and relieve the associated conductive hearing loss and discomfort. A tiny ventilation tube — commonly called a grommet, tympanostomy tube, or pressure equalisation tube — is usually inserted through the incision immediately after drainage to maintain aeration of the middle ear, prevent fluid re-accumulation, and equalise pressure across the eardrum. The middle ear is normally an air-filled cavity lined with mucosa and connected to the nasopharynx by the Eustachian tube. When the Eustachian tube is blocked or dysfunctional — as occurs commonly in young children due to their horizontal tube orientation and frequent upper respiratory infections — negative pressure develops in the middle ear, drawing serous or mucinous fluid from the mucosa into the middle ear space. This condition, known as otitis media with effusion (OME) or 'glue ear', impairs sound transmission through the ossicular chain, causing conductive hearing loss of typically 25–40 dB. Myringotomy with grommet insertion is one of the most frequently performed surgical procedures in the world — it is the most common paediatric surgery requiring anaesthesia in the United States, United Kingdom, and Australia — and it is highly effective at restoring hearing and reducing otitis media recurrence rates.

Myringotomy with grommet insertion is indicated for recurrent acute otitis media (AOM) — defined as 3 or more episodes within 6 months, or 4 or more within 12 months — when prophylactic antibiotics have failed or are inappropriate. It is also indicated for otitis media with effusion (glue ear) that has persisted for more than 3 months in both ears, particularly when associated with documented conductive hearing loss of 25 dB or greater measured by pure-tone audiometry, significant speech, language, or educational impact, or behavioural changes attributed to hearing loss. Children with cleft palate, Down syndrome, or other conditions associated with severe Eustachian tube dysfunction are at high risk and benefit from earlier intervention. Grommet insertion is also used to deliver topical antibiotic drops for acute otitis media complicated by tympanic membrane perforation, and for Eustachian tube dysfunction in adult aviation personnel or frequent divers. The AAO-HNS clinical practice guideline for tympanostomy tubes in children (updated 2022) and NICE guidelines recommend a 3-month watchful waiting period with audiological monitoring before surgical intervention in uncomplicated glue ear.

In children, brief general inhalational anaesthesia (typically sevoflurane) is administered by a paediatric anaesthetist — the procedure requires the child to remain completely still and lasts only 15–20 minutes including anaesthesia. In cooperative adults, iontophoretic topical anaesthesia (lidocaine delivered electrically through the eardrum) or local anaesthetic injection renders the procedure painless. The patient is placed supine with head turned to expose the ear. Using an operating microscope providing magnification and illumination, the surgeon carefully cleans the external auditory canal of debris and cerumen. A myringotomy knife makes a small (1–2 mm) curvilinear incision in the anteroinferior quadrant of the pars tensa of the tympanic membrane — this quadrant is chosen to avoid the ossicles and chorda tympani nerve. Middle ear fluid (ranging from thin and watery to thick, tenacious 'glue') is aspirated through the incision with a fine suction cannula. A grommet tube — a small flanged bobbin typically 1.14 mm outer diameter made from silicone, Teflon, or titanium — is inserted into the incision and seated in the eardrum using microsurgical forceps and a pick. The flanges on both sides of the eardrum prevent extrusion. Antibiotic ear drops (ciprofloxacin or neomycin) may be instilled at the end of the procedure.

Myringotomy with grommet insertion provides immediate restoration of hearing by draining the conductive-loss-causing middle ear fluid and ventilating the middle ear space. Hearing improvement of 15–30 dB is achieved immediately after surgery in over 90% of children with otitis media with effusion. This hearing restoration has educational, speech development, and quality-of-life benefits: children who receive grommets earlier show faster language development scores and better classroom performance than those managed with prolonged watchful waiting, particularly those with bilateral hearing loss exceeding 40 dB. Recurrent acute otitis media is significantly reduced: the number of acute ear infections drops by 50–70% in the year following grommet insertion compared with antibiotic prophylaxis or no treatment, reducing antibiotic exposure and associated risks of resistance. For parents, the reduction in sleepless nights, distressed children, and urgent GP and emergency visits represents a substantial quality-of-life improvement. The procedure itself takes only 15–20 minutes and most children are eating and drinking within 30 minutes of waking from anaesthesia. Adults with Eustachian tube dysfunction benefit from elimination of pressure symptoms, aural fullness, and episodic sharp pain during altitude changes.

Myringotomy is one of the safest procedures in medicine with a complication rate below 2% for the procedure itself. Otorrhoea (discharge through the tube) affects 20–30% of patients at some point during the tube's lifespan and is treated with topical antibiotic drops (ciprofloxacin). Premature extrusion of the tube before 6 months occurs in 3–5% and may require reinsertion if the underlying problem has not resolved. Persistent tympanic membrane perforation after the grommet extrudes affects 1–2% of cases — most resolve spontaneously over 6–12 months but a small number require surgical repair (myringoplasty). Tympanosclerosis — white chalky plaques of calcium deposition in the eardrum — develops in 30–40% of cases after grommet insertion but rarely affects hearing significantly. Infection requiring systemic antibiotics rather than topical drops occurs in less than 2%. The risks of general anaesthesia in healthy children are extremely low at experienced paediatric anaesthetic centres — serious anaesthetic complications occur in less than 1 in 10,000 cases. Approximately 20–30% of children require a second set of grommets for recurrence of middle ear disease after the first set naturally extrudes.

Recovery from myringotomy and grommet insertion is rapid. Children typically wake from anaesthesia within 10–15 minutes and are discharged home within 1–2 hours of the procedure. Mild ear discomfort, slight bloody discharge, and increased ear awareness for 1–2 days are normal and expected. Antibiotic ear drops (ciprofloxacin 0.3%, 3 drops twice daily for 5–7 days) are prescribed to prevent otorrhoea. Normal diet and activities resume the same day. Water precautions — using custom silicone ear plugs or cotton wool coated in petroleum jelly during bathing and hair washing — are recommended while the tubes are in place to prevent water ingress causing infection; surface swimming is generally acceptable with plugs, while submersion and diving are prohibited. Regular ENT follow-up is arranged at 4–6 weeks to confirm grommet position and hearing, and again at 12 months. Grommets are designed to be temporary and naturally extrude from the eardrum as it grows and migrates outward, falling into the ear canal over 6–18 months. The eardrum heals spontaneously in over 95% of cases. Annual audiological assessment continues until the child's hearing is confirmed normal and Eustachian tube function has matured — typically by age 7–8 in most children.