Otitis Externa Management

Introduction to Otitis Externa

Otitis externa is a condition that requires proper management, with the American Academy of Otolaryngology-Head and Neck Surgery providing guidelines for treatment and prevention 1, 2

The American Academy of Otolaryngology-Head and Neck Surgery recommends topical antibiotics with corticosteroids to hasten pain relief in patients with otitis externa, with a strength of evidence supporting this treatment 1, 3
Systemic antimicrobials should not be prescribed as initial therapy for diffuse, uncomplicated otitis externa, according to the American Academy of Otolaryngology-Head and Neck Surgery 1
Topical therapy provides a significantly higher concentration of antimicrobial, 100-1000 times higher, compared to systemic therapy, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 1
Quinolone antibiotic ear drops, particularly ciprofloxacin combined with a corticosteroid, are the most effective first-line treatment for ear discharge, with a cure rate of up to 90.9% 4
Topical antibiotic drops are more effective than oral antibiotics for treating ear drainage in children with tubes, with a strength of evidence supported by the American Academy of Otolaryngology-Head and Neck Surgery 5

Patients with a ruptured tympanic membrane should be prescribed non-ototoxic topical preparations, such as ofloxacin otic solution, as the initial treatment, with a strong recommendation from the American Academy of Otolaryngology-Head and Neck Surgery 3, 5
Benzocaine otic solutions and aminoglycoside-containing drops should be avoided in patients with perforated tympanic membranes due to potential ototoxicity, as advised by the American Academy of Otolaryngology-Head and Neck Surgery 1, 4
Ciprofloxacin resistance has been reported in 4.5% of patients with otorrhea and is increasing, with alternative non-ciprofloxacin drops having a 70% cure rate, and adding oral antibiotics increasing the success rate to 64.7% 4

For severe pain, consider short-term opioid-containing analgesics for the initial 48-72 hour period, as suggested by the American Academy of Otolaryngology-Head and Neck Surgery 1

Patients should be warned about the risks of using cotton swabs, bobby pins, paper clips, etc., and the importance of avoiding excessive cleaning, which can irritate the ear canal and increase chances of cerumen impaction, as emphasized by the American Academy of Otolaryngology-Head and Neck Surgery 2
The American Academy of Otolaryngology-Head and Neck Surgery recommends keeping the ear dry during treatment using earplugs or cotton with petroleum jelly when showering, and advises drying ears thoroughly after swimming or bathing, considering acidifying ear drops before/after swimming, using ear plugs while swimming, and avoiding trauma to the ear canal 3, 1

Regular follow-up with an otolaryngologist is recommended for children with ear tubes, typically every 6 months, as suggested by the American Academy of Otolaryngology-Head and Neck Surgery 6
Schedule follow-up within 48-72 hours if symptoms don't improve, and consider referral to an otolaryngologist if symptoms persist despite appropriate therapy for 2 weeks, as advised by the American Academy of Otolaryngology-Head and Neck Surgery 3, 1
Recognize when to refer, including persistent symptoms despite treatment, suspicion of tympanic membrane perforation, or severe psychiatric comorbidity, as advised by the American Academy of Otolaryngology-Head and Neck Surgery 2

Pseudomonas aeruginosa and Staphylococcus aureus are the most common pathogens in ear discharge, with Pseudomonas aeruginosa being the primary cause of persistent otorrhea after tympanostomy tube placement, followed by other bacterial pathogens 4, 7, 3
Consider MRSA in recurrent or recalcitrant cases, as suggested by the American Academy of Otolaryngology-Head and Neck Surgery 7
The American Academy of Otolaryngology-Head and Neck Surgery suggests being vigilant for necrotizing (malignant) otitis externa in diabetic, immunocompromised, or elderly patients, which requires urgent referral 1

The American Academy of Otolaryngology-Head and Neck Surgery recommends instructing patients to warm the drops by holding the bottle in hand for 1-2 minutes, lie with affected ear upward, instill prescribed number of drops to fill ear canal, maintain position for 3-5 minutes to facilitate penetration, and pump the tragus 4 times to help medication penetrate (especially important with tympanic membrane perforation) 3
The American Academy of Otolaryngology-Head and Neck Surgery recommends ofloxacin 0.3% otic solution, with a dosage of 5 drops twice daily for 7-10 days for ages 1-12 years, and 10 drops twice daily for 7-10 days for ages 12+ years with perforated eardrum 5