A nurse assessing the results of a Rinne test sees the notation of BC > AC. How should the nurse translate this result?

Normal hearing

Cochlear defect

Conductive hearing loss

Sensorineural hearing loss

Answer and Explanation

The Correct Answer is C

a) Normal hearing: In normal hearing, air conduction (AC) should be greater than bone conduction (BC), meaning BC > AC is not a normal finding.
b) Cochlear defect: A cochlear defect would result in sensorineural hearing loss, which would show a normal Rinne test (AC > BC).
c) Conductive hearing loss: BC > AC indicates conductive hearing loss, where sound transmission through the external or middle ear is impaired, allowing bone conduction to be heard more clearly than air conduction.
d) Sensorineural hearing loss: Sensorineural hearing loss typically shows a normal or positive Rinne test (AC > BC), as the issue lies with the inner ear or auditory nerve, not the conduction of sound.

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Correct Answer is A

Explanation

a) A red, dull, thick, and immobile tympanic membrane: In acute otitis media, the tympanic membrane typically appears red, dull, thickened, and may be immobile due to fluid and infection in the middle ear.
b) A transparent and clear tympanic membrane: This would suggest a healthy, non-infected ear, which is not expected in acute otitis media.
c) A pink-colored tympanic membrane: This is not a typical finding in acute otitis media; a pink membrane is more characteristic of a healthy ear.
d) A pearly colored tympanic membrane: A pearly color is normal for the tympanic membrane, indicating a healthy ear with no infection.

A. Decreasing viscosity of the tears and allowing fluid to drain away from the eye B. Increasing plasma osmolarity and drawing extracellular fluid into the blood C. Blocking production of aqueous humor D. Promoting outflow of the aqueous humor into the tear ducts

Correct Answer is B

Explanation

a) Decreasing viscosity of the tears and allowing fluid to drain away from the eye: This is incorrect. Osmotic agents do not act by affecting the viscosity of tears or enhancing drainage.
b) Increasing plasma osmolarity and drawing extracellular fluid into the blood: Osmotic agents, like mannitol, work by increasing plasma osmolarity, which draws excess fluid from the eye into the bloodstream, thereby lowering intraocular pressure.
c) Blocking production of aqueous humor: This is incorrect. Blocking production of aqueous humor is the mechanism of action of medications like beta-blockers (e.g., timolol), not osmotic agents.
d) Promoting outflow of the aqueous humor into the tear ducts: This is incorrect. Promoting outflow of aqueous humor is the mechanism of action for other medications, such as prostaglandin analogs, not osmotic agents.

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A nurse assessing the results of a Rinne test sees the notation of BC > AC. How should the nurse translate this result?

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