Outer ear Flashcards
Describe pinna hematoma- location, etiology, major complication
Between perichondrium and cartilage
Cauliflower appearance if untreated
Caused by trauma
How to treat pinna hematoma
Pressure dressing after lancing within 2 days (use abx prophylaxis)- cannot for chronic injury due to coagulation
When should you never irrigate the ear
TM perforation, if there is a foreign body which absorbs water, or if foreign body is a battery
Symptoms of cerumen impaction
pain, pressure, vertigo, hearing loss
Most common age group for foreign body
less than 8
most common tools used for foreign body removal
alligator forceps, suction, cerumen loop, balloon catheter, right angle hook
3 causes of otitis externa
trauma, bacteria, fungi
most common etiology of otitis externa
recent swimming
common symptoms of otitis externa
tragus and pinna tenderness, erythema, epithelial edema, TM can be mildly inflammed
most common causes of chronic otitis externa
hearing aids and foreign bodies
lasts longer than 6 weeks
When to order a CT for otitis externa
mastoiditis
mortality rate of mastoiditis or malignant otitis externa
50%
major sign of physical abuse in ears
bilateral atraumatic tympanic membrane perforation
etiology of TM perforations
foreign body, iatrogenic, forceful irrigation, otitis media, or barotrauma
for TM perforation does sound lateralize toward or away from affected ear during the weber test
toward
