Otic barotrauma: Difference between revisions
| Line 9: | Line 9: | ||
====Inner Ear==== | ====Inner Ear==== | ||
*Results from forceful valsalva against an occluded eustachian tube | *Results from forceful valsalva against an occluded eustachian tube, or rapid descent in diving or aviation | ||
**Pressure difference between middle ear and inner ear can rupture oval or round window | **Pressure difference between middle ear and inner ear can rupture oval or round window | ||
*Sudden onset of sensorineural hearing loss, tinnitus, severe vertigo | *Sudden onset of sensorineural hearing loss, tinnitus, severe vertigo | ||
*Must be lacking in any other neurologic signs (otherwise consider infarction) | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
Revision as of 16:17, 19 October 2018
Background
- Also known as "ear squeeze" - generally seen during scuba diving or air travel
Clinical Features
Middle Ear
- Results from inability to equalize middle ear pressure
- Pain, fullness, vertigo, conductive hearing loss, TM rupture
Inner Ear
- Results from forceful valsalva against an occluded eustachian tube, or rapid descent in diving or aviation
- Pressure difference between middle ear and inner ear can rupture oval or round window
- Sudden onset of sensorineural hearing loss, tinnitus, severe vertigo
- Must be lacking in any other neurologic signs (otherwise consider infarction)
Differential Diagnosis
Diving Emergencies
- Barotrauma of descent
- Otic barotrauma
- Pulmonary barotrauma
- Sinus barotrauma
- Mask squeeze
- Barodentalgia (trapped dental air causing squeeze)
- Barotrauma of ascent
- Pulmonary barotrauma (pulmonary overpressurization syndrome)
- Decompression sickness (DCS)
- Arterial gas embolism
- Alternobaric vertigo
- Facial baroparesis (Bells Palsy)
- At depth injuries
- Oxygen toxicity
- Nitrogen narcosis
- Hypothermia
- Contaminated gas mixture (e.g. CO toxicity)
- Caustic cocktail from rebreathing circuit
Ear Diagnoses
External
- Auricular hematoma
- Auricular perichondritis
- Cholesteatoma
- Contact dermatitis
- Ear foreign body
- Herpes zoster oticus (Ramsay Hunt syndrome)
- Malignant otitis externa
- Otitis externa
- Otomycosis
- Tympanic membrane rupture
Internal
- Acute otitis media
- Chronic otitis media
- Mastoiditis
Inner/vestibular
Barotrauma Types
- Otic barotrauma
- Pulmonary barotrauma
- Sinus barotrauma
- Mask squeeze
- Barodentalgia (trapped dental air causing squeeze)
Evaluation
- Generally clinical
- Webber and Rinne for middle ear barotrauma
- Conductive hearing loss expected
Management
Middle Ear
- Decongestants
- Consider antibiotics if typmanic membrane ruptured
- Urgent audiology required if sensorineural hearing loss, rather than conductive hearing loss
Inner Ear
- Elevate head of bed
- Advise patient to not blow nose
- Antivertigo medications
- ENT consult
Disposition
- Generally may be discharged
- Resolution usually in 5-7 days, but can take up to 2 weeks