A nurse is caring for a client with a urine specific gravity of less than 1.005, polyuria, and nocturia. The nurse recognizes that which of the following physiologic findings is the likely cause?
Increased insulin production
Increased adrenocorticotropic hormone (ACTH)
Low levels of T3, T4
Insufficient antidiuretic hormone (ADH)
The Correct Answer is D
A. Increased insulin production would not cause polyuria and low specific gravity urine; rather, hyperglycemia from lack of insulin can cause high specific gravity due to glucose in urine.
B. Increased ACTH affects cortisol production but is not directly related to urine concentration or polyuria.
C. Low T3 and T4 levels are associated with hypothyroidism, which typically does not cause polyuria or decreased specific gravity.
D. Insufficient ADH, as seen in diabetes insipidus, leads to the inability to concentrate urine, resulting in a low specific gravity, polyuria, and nocturia due to excessive water loss.
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Correct Answer is B
Explanation
A. Serum thyroxine (T4) is typically decreased in primary hypothyroidism due to reduced thyroid hormone production.
B. In primary hypothyroidism, the thyroid gland fails to produce sufficient hormones, which leads to an increase in thyroid-stimulating hormone (TSH) as the pituitary gland tries to stimulate thyroid function. Elevated TSH is a common finding in primary hypothyroidism.
C. Serum T3 is usually decreased in primary hypothyroidism since the production of T3 and T4 is reduced.
D. Free T4 is typically low in primary hypothyroidism as the thyroid gland is underactive and not producing adequate levels of thyroid hormones.
Correct Answer is ["A","B","C","D","E"]
Explanation
A. Edema of the ear canal is a common symptom of external otitis, indicating inflammation and infection in the area.
B. Purulent drainage from the ear canal often signifies bacterial infection and is a key symptom to monitor.
C. Burning in the ear canal can occur due to inflammation and is a common complaint in external otitis.
D. Pain when moving the auricle is a classic symptom of external otitis, indicating irritation or inflammation of the external ear.
E. Tenderness of the external ear is a common finding in external otitis and should be monitored as it indicates inflammation and potential infection.