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Emergency and Acute Medicine: Tympanic Membrane Perforation
Tympanic membrane (TM) perforation refers to a disruption or hole in the eardrum and can be classified by duration, location, and extent. Acute perforations are defined as those present for less than 3 months, whereas chronic perforations persist beyond this period. Anatomically, perforations may involve the pars tensa or pars flaccida, and the extent may range from small defects confined to one quadrant to total perforations involving the entire membrane.
The most common cause of acute TM perforation is infection, particularly acute otitis media, where increased middle ear pressure leads to rupture. Trauma is another frequent cause and may be blunt, such as a slap to the ear (often seen in assaults or domestic violence), or penetrating, such as injury from cotton swabs (Q-tips). Rapid pressure changes from activities like diving or flying can also cause rupture (barotrauma), as can blast injuries, extreme noise exposure, lightning strikes, and thermal injuries such as slag burns during welding. Less commonly, perforation may result from surgical procedures (e.g., myringotomy or tympanostomy tube placement) or infections like acute necrotizing myringitis.
Patients typically present with mild ear pain, though severe pain or complete hearing loss may indicate more serious associated injury. Other common symptoms include tinnitus, vertigo (especially if injury occurs in water), and partial hearing loss. On physical examination, findings may include visible perforation on otoscopy, decreased hearing, and purulent or bloody discharge from the ear canal. Small perforations may only be detected by decreased mobility of the tympanic membrane during pneumatic otoscopy. Special tests such as the Weber and Rinne tuning fork tests help differentiate conductive from sensorineural hearing loss. The presence of nystagmus or vertigo during pressure testing may suggest a more serious inner ear injury such as a labyrinthine fistula.
Diagnosis is primarily clinical, based on direct visualization of the tympanic membrane and hearing assessment. If discharge is present, culture may be considered. Imaging, particularly CT of the temporal bone, is reserved for cases where a temporal bone fracture or more severe injury is suspected.
Management in the emergency setting focuses on supportive care and prevention of complications. Initial stabilization follows standard trauma principles when indicated. The ear canal should be gently cleared of debris using suction or manual removal, but irrigation must be avoided to prevent forcing contaminants into the middle ear. Routine prophylactic antibiotics are not necessary; however, antibiotics should be prescribed if there is evidence of infection or contamination (e.g., water exposure). Common options include amoxicillin or amoxicillin-clavulanate. Ototopical antibiotics—particularly fluoroquinolone drops such as ciprofloxacin with dexamethasone—are preferred in cases of chronic suppurative otitis media or when contamination is suspected, as they are safer with respect to ototoxicity compared to other agents.
Urgent ENT consultation is indicated in patients with concerning features such as vertigo, sensorineural hearing loss, severe tinnitus, significant bleeding, or facial nerve paralysis. Most patients can be safely discharged with outpatient follow-up. Nearly all tympanic membrane perforations heal spontaneously, especially small ones—many within weeks to months. Surgical repair (e.g., tympanoplasty) is reserved for the minority (10–20%) that fail to heal.
Patients should be given clear discharge instructions to prevent complications. They should keep the ear dry by occluding it during showering, avoid swimming unless protected, and refrain from forceful nose blowing. Prognosis is generally excellent, though complications such as infection, ossicular disruption, perilymph leakage, or cholesteatoma can occur in some cases.
Key clinical pearls include recognizing acute otitis media as the most common cause, avoiding irrigation of the ear, and understanding that most perforations heal without intervention. Proper protection of the ear from water and contaminants is essential to promote healing and prevent infection.
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