Class Notes (1,100,000)
CA (620,000)
UTSC (30,000)
BIOC33H3 (100)
Lecture

BIOC33H3 Lecture Notes - Endolymph, Pus, Exudate


Department
Biological Sciences
Course Code
BIOC33H3
Professor
Stephen Reid

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PROBLEMS OF THE EAR
EXTERNAL OTITIS
External otitis involves inflammation or infection of the auricle and ear canal epithelium
due to infection.
Symptoms are pain, ear canal swelling, and drainage.
Therapy is analgesics, antibiotics, and compresses.
ACUTE OTITIS MEDIA
Untreated or repeated attacks of acute otitis media in early childhood may lead to chronic
middle ear infection.
Symptoms include purulent exudate and inflammation that can involve the ossicles,
eustachian tube, and mastoid bone.
It is often painless.
Treatment may include antibiotics and surgery.
MÉNIÈRE’S DISEASE
nière’s disease is characterized by symptoms of inner ear disease with episodic
vertigo, tinnitus, fluctuating sensorineural hearing loss, and aural fullness.
The cause is unknown, but results in excessive accumulation of endolymph.
Attacks may begin with sense of ear fullness, tinnitus, and decreased hearing acuity.
The duration of attacks is hours to days, and attacks occur several times a year.
Other symptoms are pallor, sweating, nausea, and vomiting.
Hearing loss fluctuates, and with continued attacks, recovery lessens, eventually leading
to permanent hearing loss.
Drugs are used between and during attacks.
If not relieved, surgeries include endolymphatic sac decompression and vestibular nerve
resection.
Nursing care minimizes vertigo and provides for patient safety with acute attacks.
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