Diferencia entre revisiones de «Otitis externa»

Sin resumen de edición
Sin resumen de edición
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==Background==
==Background==
===Microbiology===
===Microbiology===
#Staph/Strep
#Pseudomonas
#Pseudomonas
#Staph epidermidis/aureus
#Enterobacter
#Strep
#Proteus
#Anerobes
#Fungus
#Fungal infection may present after Abx tx
##Aspergillus, candida (may present after abx tx)


===Risk Factors===
===Risk Factors===
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==Differential Diagnosis==
==Differential Diagnosis==
#Necrotizing otitis externa
#[[Malignant Otitis Externa]]
##Spread of infection to soft tissue, cartilage, bone of temporal region
##Most common in elderly, diabetic patients
##Granulation tissue often seen in the ear canal floor
##Suspect if fever, severe otalgia, facial paralysis/meningeal signs
##Prompt referral to ENT; treat with anti-pseudomonal agents
#Otomycosis
#Otomycosis
##Pts complain more of itching than pain
##Pts complain more of itching than pain
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###Cleaning of ear canal
###Cleaning of ear canal
###Topical antifungal
###Topical antifungal
#Contact dermatitis
#Contact Dermatitis
#Chronic suppurative otitis media
##Chronic suppurative otitis media
##Ear canal findings are usually mild compared with bacterial external otitis
##Ear canal findings are usually mild compared with bacterial external otitis


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##Cerumen wire loop or cotton swab
##Cerumen wire loop or cotton swab
##1:1 dilution of 3% hydrogen peroxide if TM is visible and intact
##1:1 dilution of 3% hydrogen peroxide if TM is visible and intact
#Topical antibiotic therapy
#Antibiotics
##Floxin Otic: 5 drops in affected ear BID x 7 days
##Floxin Otic: 5 drops in affected ear BID x 7 days
###Safe with perforations
##Cipro HC Otic: 3 drops in affected ear BID x 7 days  
##Cipro HC Otic: 3 drops in affected ear BID x 7 days  
###Contains hydrocortisone = faster healing
###Contains hydrocortisone = faster healing
##Cortisporin Otic suspension: 4 drops TID x 7 days
###Not safe with perforation
###Avoid in pts with perforated TM
#Analgesia
#Analgesia
##NSAIDs
##NSAIDs
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##Keep ear canal dry
##Keep ear canal dry
##Abstain from water sports for 7-10 days  
##Abstain from water sports for 7-10 days  
#Follow-up
 
##1-2 weeks for pts with moderate disease  
==Disposition==
*F/u in 1-2wks for pts with moderate disease  


==See Also==
==See Also==
[[Otitis Media (Peds)]]
*[[Otitis Media (Peds)]]
*[[Malignant Otitis Externa]]


==Source==
==Source==
UpToDate
*UpToDate
 
*Tintinalli
Tintinalli


[[Category:ENT]]
[[Category:ENT]]
[[Category:ID]]
[[Category:ID]]

Revisión del 01:33 4 nov 2011

Background

Microbiology

  1. Staph/Strep
  2. Pseudomonas
  3. Enterobacter
  4. Proteus
  5. Fungus
    1. Aspergillus, candida (may present after abx tx)

Risk Factors

  1. Swimming
  2. Excessive Q-tip use

Diagnosis

  1. Otalgia
    1. Elicited by tragal pressure, pulling the auricle superiorly
  2. Pruritis
  3. Discharge
  4. Hearing loss

Differential Diagnosis

  1. Malignant Otitis Externa
  2. Otomycosis
    1. Pts complain more of itching than pain
    2. Characteristic appearance on exam; like mold growing on spoiled food
    3. Treatment
      1. Cleaning of ear canal
      2. Topical antifungal
  3. Contact Dermatitis
    1. Chronic suppurative otitis media
    2. Ear canal findings are usually mild compared with bacterial external otitis

Treatment

  1. Clean the ear canal
    1. Cerumen wire loop or cotton swab
    2. 1:1 dilution of 3% hydrogen peroxide if TM is visible and intact
  2. Antibiotics
    1. Floxin Otic: 5 drops in affected ear BID x 7 days
      1. Safe with perforations
    2. Cipro HC Otic: 3 drops in affected ear BID x 7 days
      1. Contains hydrocortisone = faster healing
      2. Not safe with perforation
  3. Analgesia
    1. NSAIDs
  4. Avoiding promoting factors
    1. Keep ear canal dry
    2. Abstain from water sports for 7-10 days

Disposition

  • F/u in 1-2wks for pts with moderate disease

See Also

Source

  • UpToDate
  • Tintinalli