What ear drops are safe to use in children with tympanostomy (PE) tubes for ear drainage or infection?

Ear Drops for Children with PE Tubes

For children with tympanostomy (PE) tubes who develop ear drainage or infection, use topical quinolone antibiotic ear drops alone (ofloxacin or ciprofloxacin-dexamethasone) without oral antibiotics—this is the best treatment with superior cure rates of 77-96% compared to 30-67% with oral antibiotics. 1

Safe and Effective Ear Drop Options

The American Academy of Otolaryngology–Head and Neck Surgery Foundation strongly recommends the following topical antibiotic ear drops for uncomplicated acute tympanostomy tube otorrhea (TTO): 1

• Ofloxacin (quinolone antibiotic alone) 1
• Ciprofloxacin-dexamethasone (quinolone antibiotic plus steroid) 1
• Ciprofloxacin (quinolone antibiotic alone) 1

Why Quinolone Drops Are Preferred

• Non-ototoxic: Unlike aminoglycoside-containing drops (neomycin, gentamicin, tobramycin), quinolone drops are approved for use with tympanostomy tubes because they do not cause hearing damage 1
• Superior efficacy: Topical antibiotic therapy achieves clinical cure rates of 77-96% versus 30-67% with oral antibiotics after 7-10 days of treatment 1
• Better pathogen coverage: Provides excellent coverage against common pathogens including Pseudomonas aeruginosa and Staphylococcus aureus, which frequently cause infections after water exposure 1
• Higher drug concentration: Delivers up to 1000-fold higher antibiotic concentration at the infection site compared to oral antibiotics 1
• No systemic absorption: Although systemic quinolones are not approved for children under 14 years, topical quinolone drops are safe because they are not absorbed systemically 1

How to Use Ear Drops Correctly

Application technique (critical for effectiveness): 1

• Place drops in the ear canal twice daily for up to 10 days 1
• "Pump" the tragus (flap of skin in front of ear canal) several times after placing drops to help them enter the tube 1
• Clean visible drainage from the ear canal opening before applying drops using cotton-tipped swabs dipped in hydrogen peroxide or warm water 1
• Gently suction drainage with an infant nasal aspirator if needed 1

Important Caveats and Pitfalls

Avoid Prolonged Use

• Do not use antibiotic ear drops for more than 10 days at a time to prevent yeast infections of the ear canal 1
• Limit to a single course when possible 1

Never Use Aminoglycoside Drops

• Avoid Cortisporin and other aminoglycoside-containing drops (neomycin, gentamicin, tobramycin) as they are potentially ototoxic when used with PE tubes 1, 2
• These drops are commonly used for swimmer's ear (otitis externa) but should NOT be used with tympanostomy tubes 1

Potential Risk of Persistent Perforation

• One retrospective study found quinolone ear drops, particularly when combined with corticosteroids, may increase the risk of persistent eardrum perforation requiring tympanoplasty after tube extrusion (adjusted hazard ratio 1.61 for quinolones overall, 2.00 for ciprofloxacin-dexamethasone) 3
• However, this must be weighed against the superior efficacy and non-ototoxic profile of quinolones, which remain the guideline-recommended first-line treatment 1
• Clinicians should counsel families about this potential risk 3

Antibiotic-Steroid Combinations

• Recent evidence suggests antibiotic-corticosteroid combinations (like ciprofloxacin-dexamethasone) may be more effective than antibiotic alone for acute TTO 4
• However, the increased perforation risk with steroid-containing drops should be considered 3

When Oral Antibiotics ARE Needed

Oral antibiotics are appropriate (with or without topical drops) when: 1

• Cellulitis of the ear or adjacent skin is present 1
• Concurrent bacterial infection exists (sinusitis, pneumonia, strep throat) 1
• Signs of severe infection (high fever, severe ear pain, toxic appearance) 1
• Acute TTO persists or worsens despite topical therapy 1
• The child is very ill or immunocompromised 1
• Ear drops cannot be administered due to child's intolerance 1

When to Seek Further Evaluation

Call the otolaryngologist if: 1

• Ear drainage continues for more than 7 days despite treatment 1
• Drainage occurs frequently 1
• The child has hearing loss or continued ear pain 1

Management of Treatment Failure

Only 4-8% of children require oral antibiotic rescue therapy after topical quinolone drops 1

If topical therapy fails: 1

• Check for obstructing debris in the ear canal or tube that impairs drug delivery 1
• Consider culture of persistent drainage to detect fungi or MRSA 1
• Note that even if culture shows "resistance," the extremely high local concentration of topical drops (up to 1000-fold higher than serum levels) typically overcomes this resistance 1