. A client presents with conductive hearing loss. Which of the following conditions is the most likely cause?
Otosclerosis
Acoustic neuroma
Meniere's disease
Presbycusis
The Correct Answer is A
A. Otosclerosis. Otosclerosis is a common cause of conductive hearing loss, typically due to abnormal bone growth around the stapes in the middle ear.
B. Acoustic neuroma. Acoustic neuroma is associated with sensorineural hearing loss, not conductive hearing loss.
C. Meniere's disease. Meniere's disease usually causes sensorineural hearing loss, often accompanied by vertigo and tinnitus.
D. Presbycusis. Presbycusis is age-related sensorineural hearing loss and does not result in conductive hearing loss.
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Correct Answer is ["B","C","D"]
Explanation
A. Obese extremities. Clients with Cushing's syndrome typically experience central (truncal) obesity with thin extremities due to fat redistribution and muscle wasting, not obese extremities.
B. Buffalo hump: A "buffalo hump" (fat pad on the back of the neck) is a common characteristic of Cushing's syndrome due to abnormal fat distribution.
C. Purple striations. Purple or reddish striae on the abdomen and other areas are commonly seen in Cushing's syndrome due to skin thinning and collagen breakdown.
D. Moon face. A round, full face (moon face) is a classic sign of Cushing's syndrome due to fat deposits in the face.
E. Tremors. Tremors are not typically associated with Cushing's syndrome and are more often associated with neurological or metabolic conditions.
Correct Answer is B
Explanation
A. Inflammation of the motor cortex leads to decreased coordination and balance. Parkinson’s disease is not caused by inflammation in the motor cortex; it primarily involves the loss of dopamine-producing neurons.
B. Degeneration of dopamine-producing neurons in the substantia nigra of the brain leads to motor dysfunction. Parkinson’s disease is caused by the degeneration of dopamine-producing neurons in the substantia nigra, leading to motor symptoms such as tremors, rigidity, and bradykinesia.
C. A loss of acetylcholine in the brain leads to memory problems and cognitive decline. While a loss of acetylcholine is associated with Alzheimer’s disease, it is not the primary issue in Parkinson’s disease.
D. Excess production of dopamine in the basal ganglia leads to tremors and muscle rigidity. In Parkinson’s disease, there is a decrease, not an excess, in dopamine production, which contributes to motor symptoms.