Ears Flashcards
What frequencies do we lose in noise hearing loss?
High frequencies
What are the three types of hearing loss?
Conductive
Sensorineural
Mixed
What drugs can cause ototoxicity?
- Furosemide
- Gentamicin
- ASA
- Ethacrynic acid
- Cisplatin
What is another name for Meniere’s disease?
Endolymphatic hydrops
What type of hearing loss is caused by an acoustic neuroma?
Sensorineural
Tx for an acoustic neuroma?
Radiotherapy
Microsurgery
Are acoustic neuromas usually unilateral or bilateral?
Unilateral
-If associated with NF, can be bilateral
What condition is characterized by the following: low-frequency hearing loss, tinnitus, a sense of aural fullness, and rotatory vertigo?
Meniere’s disease
Tx for Meniere’s disease?
- Low salt diet
- Caffeine restriction
- HCTZ
What anti-emetics can be used to treat Meniere’s?
- Promethazine
- Meclizine
- Dramamine
- Scopolamine
Should the Weber and Rinne tests be used for general screening?
No
What does tympanometry test?
Middle ear function and reflexes
What are possible fungal causes of OE?
Aspergillus
-Candida
What are some non-infectious systemic causes of OE?
- Psoriasis
- Atopic dermatitis
- Seborrheic dermatitis
- Acne
- Lupus
Should we give oral antibiotics for OE?
- No!
- Topicals/acids may be sufficient
What topical ABX can be used for a perforated TM?
- Ofloxacin
- Ciprodex
What form of OE can occur in elderly diabetics and immune-supressed?
Necrotizing/malignant OE
-Watch for p. aeruginosa osteomyelitis
ABX for necrotizing/malignant OE?
-Fluroquinilones or
Beta-lactam + aminoglycoside
Most common cause of OM via Eustachian tube reflux/obstruction?
-Viral nasopharyngitis
What over-the-counter meds are good starting points for OM?
- Antihistamines
- Decongestants
First-line ABX for AOM?
Amoxicillin
Second-line ABX tx for AOM?
- Augmentin
- 2nd/3rd gen. cephalosporin
What receptors are found in the semicircular ducts?
Crista
What receptors are found in the saccule and utricle?
Macula
Which receptors pick up linear acceleration?
Macula
Which receptors pick up angular acceleration?
Crista
Which receptors are involved in static equilibrium?
Macula
