Module 9 Part 2 Otitis Externa – Adult Necrotizing (Malignant) MUMS

Question 1

Question

Answer 1

Answer

Question 2

What is necrotizing otitis externa, and how is it treated in adults?

Answer 2

Necrotizing otitis externa is an invasive infection of the external auditory canal, and it’s treated in adults with antibiotics. Oral therapy often involves ciprofloxacin 750 mg BID, while IV therapy options include various antibiotics like ciprofloxacin IV and others.

Question 3

What is the probable organism in cases of otitis externa with necrotizing features?

Answer 3

The probable organism is P. aeruginosa.

Question 4

What is the recommended duration of treatment for necrotizing otitis externa, and what additional treatment may be needed?

Answer 4

The treatment duration is 4 to 8 weeks, and additional treatment often involves topical antibiotic drops used concomitantly.

Question 5

In which patient populations is necrotizing otitis externa more common, and what should be considered in treatment?

Answer 5

Necrotizing otitis externa is more common in the elderly, individuals with diabetes mellitus, and those who are immunocompromised. Treatment should be initiated with appropriate antibiotics, and parenteral therapy may be necessary initially. Double antibiotic coverage is considered when there is uncertainty regarding the pathogen.