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Ear Infections Notes

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This is an extract of our Ear Infections document, which we sell as part of our ENT Notes collection written by the top tier of University Of Leicester students.

The following is a more accessble plain text extract of the PDF sample above, taken from our ENT Notes. Due to the challenges of extracting text from PDFs, it will have odd formatting:

Ear Infections Otitis Externa "Swimmers ear" Acute inflammation of the skin of the meatus Causative organisms
- Pseudomonas
- Staph aureus
- Mixed growth
- Fungal Clinical features
- Itching, irritation
- Otalgia
- Usually mild otorrhoea OnRisk factors
- May arise due to moisture e.g from swimming
- Trauma e.g fingernails, cotton-wool buds
- High humidity
- Absence of wax
- Narrow ear canal

examination Red, tender ear canal +/- thin discharge Tragal tenderness Pre-auricular lymphadenopathy May result in hearing loss due to oedema of the ear canal with accumulation of debris

- Clean ear with suction
- Topical antibiotic drops e.g gentamycin short term + steroid
- Suggest precautions e.g ear plus when swimming

Malignant otitis externaAggressive infection of the external ear that can lead to temporal bone destruction and basal skull osteomyelitis Pseudomonas usually responsible Affects immunocompromised and diabetic patients Causes granulations in floor of ear canal (normal TM) May cause cranial nerve palsies (facial nerve initially but may also involve glossopharyngeal, vagus and hypoglossal nerves) Treatment requires prolonged antibiotics +/- surgical debridement

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