EXTERNAL EAR INFLAMMATION Flashcards
Localized acute otitis externa is AKA __________ and is caused by ____________
Furnuncle
Staphylococcus aureus
What are the features of furnace
Furuncle in external ear?
Severe pain
Tenderness
Jaw movement causes pain
Posterior meatal wall involvement causes edema over mastoid and obliteration of retroauricular groove
Periauricular lymph nodes enlarged
What to suspect in recurrent furuncle?
Diabetes mellitus
What is the management of localized acute otitis externa
Systemic antibiotics
Analgesics
Heat
Icthammol glycerine
What is diffuse otitis externa
Inflammation of pinna and epidermal layer of tympanic membrane
Etiology of diffuse otitis externa
Summer
Sweating
Acidic ph turns alkaline
Trauma
Bacterial invasion
Common pathogens involved in diffuse otitis externa
S. Aureus
Pseudomonas pyocyaneus
Bacillus proteus
E coli
What are the phases of diffuse otitis externa?
Acute phase (pain, serous discharge and inflamed meatal wall)
Chronic phase (itch, scanty discharge, dry ear, and rarely hypertrophic → chronic stenotic otitis external)
Treatment of acute phase of diffuse otitis externa
Antibiotics
Analgesics
Ear toilet
Medicated wicks
Treatment of chronic phase of diffuse otitis externa
Antibiotic Steroid cream
Ichthammol glycerine
Treatment of chronic phase of diffuse otitis external
Antibiotic Steroid cream
Ichthammol glycerine
Ear toilet
Malignant otitis externa is caused by ______________
Pseudomonas aeruginosa
People who are susceptible to malignant otitis externa
Elderly diabetics
Immunosuppression
S/S of malignant otitis externa
Excruciating pain
Granulation tissue
Facial and other CN palsies
CT → bone destruction
Dx of malignant otitis externa is made by _____________
Gallium-67
Gallium-67 can be repeated every ________ to check the prognosis
3 weeks
What is the treatment of malignant otitis externa
Ear toilet
Antibiotics (Gentamicin, Ceftriaxone or ceftazidime, or quinolones)
Otomycosis is a ___________ infection
fungal
Otomycosis is caused by
Aspergillus niger (black mass)
Aspergillus fumigatus (pale blue)
Candida albicans (creamy white)
Etiology of otomycosis
Summer hot climates
Topical antibiotics
S/S of otomycosis
Itching
Watery discharge
Musty odor
Treatment of fungal otomycosis
Ear toilet
Antifungal (Nystatin, clotrimazole)
Povidone iodine
Salicylic acid in alcohol
Ear MUST be kept dry
for 1 week
