Drugs for the Ear - OTITIS EXTERNA AND ITS MANAGEMENT

Question 1

OE (otitis externa) is an inflammation of the ____.

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Answer 1

EAC External Auditory Canal

Question 2

Acute OE, also known as “______ ______,” is a _____ infection of the EAC.

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Answer 2

“swimmer’s ear,”

bacterial

Question 3

In most cases, acute OE can be treated by cleaning and use of ear drops, which may contain

1. _____________
2. _____________
3. _____________

or an antibacterial drug ________________.

Answer 3

1. 2% acetic acid (to kill bacteria),
2. alcohol (to promote drying),
3. hydrocortisone (to reduce inflammation and edema),

or…….
an antibacterial drug (ciprofloxacin and certain other fluoroquinolones are preferred).

Question 4

Because the concentration of the drug is so much higher with the use of _____ _____ that oral medications are rarely _____.

_____ is a good choice for adults. Check your Sanford Guide for recommendations for children.

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Answer 4

otic drops

indicated

Ciprofloxin

Question 5

Necrotizing OE is a rare but potentially _____complication of acute OE.

Answer 5

fatal

Question 6

Name a rare but potentially fatal complication of OE.

Answer 6

Necrotizing OE

Question 7

Necrotizing OE develops when bacteria in the EAC invade the ______ or ______ bone.

The usual pathogen is ______ ________.

Answer 7

mastoid or
temporal
Pseudomonas aeruginosa.

Question 8

Necrotizing OE can be managed by thorough:
1._____________
All patients should receive 2. _____________ Patients with mild disease should receive 3. _____________ oral ciprofloxacin.
Patients with severe disease should receive 4. _______________.

Answer 8

1. cleansing and use of antipseudomonal drugs.
2. antipseudomonal ear drops (eg, ofloxacin solution).
3. oral ciprofloxacin.
4. intravenous (IV) therapy (eg, imipenem/cilastatin [Primaxin]).

Question 9

In about 10% of patients with OE, the infection is due to _____and not bacteria.

The most common fungal pathogen is _____.

•

Answer 9

fungi

Aspergillus.

•

Question 10

Fungal OE (otomycosis) can usually be managed by:
1. _____________ thorough cleansing and application of acidifying drops (eg, 2% acetic acid solution).
2. If needed, _____________ can be used.
3.Unresponsive infections can be treated with an
_____________

Answer 10

1. thorough cleansing and application of acidifying drops (eg, 2% acetic acid solution).
2. a topical antifungal drug (eg, 1% clotrimazole) can be used.
3. an oral antifungal drug (eg, itraconazole, fluconazole).

Question 11

Fungal OE (otomycosis) can usually be managed by thorough cleansing and application of acidifying drops (eg, 2% acetic acid solution). If needed, a topical antifungal drug (eg, 1% clotrimazole) can be used. Unresponsive infections can be treated with an oral antifungal drug (eg, itraconazole, fluconazole).

Answer 11

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