Which is a cause of presbycusis in older people?
Changes in the lens
Hardening of the outer ear canal
Atrophic changes in the cochlea
Ototoxicity from medications
The Correct Answer is C
A. Changes in the lens
Related to vision changes (e.g., presbyopia), not hearing.
B. Hardening of the outer ear canal
Can cause conductive hearing loss, but presbycusis is sensorineural in nature.
C. Atrophic changes in the cochlea
Presbycusis is due to degeneration of the cochlea and auditory nerve, a normal age-related change.
D. Ototoxicity from medications
This causes pathologic hearing loss, not the gradual, age-related loss seen in presbycusis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Glaucoma
In glaucoma, peripheral vision is lost first, so people look straight ahead and miss things to the side. Not consistent with looking out of the corner of the eyes.
B. Cataracts
Cataracts cause overall blurry vision, not central vision loss. People may complain of glare or faded colors.
C. Macular degeneration
Involves loss of central vision, leading the person to use peripheral vision (look from the corner of the eye) and hold objects very close.
D. Presbyopia
Affects the ability to focus on near objects, common with aging, but does not cause the person to use peripheral vision.
Correct Answer is A
Explanation
A. Dehydration
Aging kidneys lose the ability to regulate fluid balance by concentrating or diluting urine, making older adults more prone to dehydration.
B. Urinary infection
Risk increases with age, but not directly due to impaired concentrating ability.
C. Renal failure
A long-term risk, but dehydration is a more immediate and common complication.
D. Incontinence
May occur for various reasons, but not directly related to inability to dilute/concentrate urine.
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