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A patient with long-term asthma develops Cushing syndrome. What is the cause of this condition?

A.

Abruptly withdrawing cortisone therapy

B.

Poorly functioning adrenal glands

C.

Lacking ACTH, related to the pituitary gland

D.

Taking corticosteroids for many years

Answer and Explanation

The Correct Answer is D

A. Abruptly withdrawing corticosteroid therapy can lead to adrenal insufficiency, not Cushing syndrome.
B. Poorly functioning adrenal glands cause Addison’s disease, not Cushing syndrome.
C. Lacking ACTH leads to secondary adrenal insufficiency, not Cushing syndrome.
D. Taking corticosteroids for many years can result in exogenous Cushing syndrome due to prolonged exposure to high cortisol levels, which mimic the effects of endogenous Cushing syndrome.
 


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Related Questions

Correct Answer is A

Explanation

A. The classic symptoms of diabetes insipidus include polyuria (diuresis), which leads to dehydration and increased thirst as the body attempts to compensate for the fluid loss.
B. Stress incontinence, vomiting, and edema are not associated with diabetes insipidus; they are more relevant to other conditions.
C. Dizziness, hypertension, and excitability are not typical symptoms of DI and may indicate other medical conditions.
D. Bradycardia, insomnia, and muscle cramps are also not characteristic of diabetes insipidus and can be related to different health issues.

Correct Answer is C

Explanation

A. Clammy skin is associated with hypoglycemia, not diabetic ketoacidosis (DKA).
B. A rapid pulse can be present in DKA, but it is not a definitive indicator of the condition.
C. Polydipsia (excessive thirst) is a hallmark symptom of DKA, as the body tries to compensate for the severe dehydration caused by hyperglycemia and osmotic diuresis.
D. Confusion can occur in DKA, but it is usually a later sign when the condition becomes severe and metabolic acidosis worsens.

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