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. Low levels of PTH would primarily affect calcium metabolism and would not directly explain short stature or delayed menarche.
B. Impaired production of GH is most likely the cause of short stature, as growth hormone plays a critical role in growth and development during childhood.
C. Lack of ACTH affects adrenal hormone production but does not directly lead to short stature or delayed menarche.
D. Impaired production of T3 and T4 would affect metabolism and growth but is less likely to be the primary cause of the symptoms presented compared to growth hormone deficiencies.
Correct Answer is C
Explanation
A. While ensuring proper alignment is important, it does not address the existing skin breakdown and irritation.
B. Applying zinc oxide cream may not be appropriate as it can trap moisture, potentially worsening the skin condition around pin sites.
C. Padding the areas of skin breakdown with foam dressing is an appropriate intervention as it can provide cushioning, reduce friction, and protect the skin from further injury.
D. Loosening the halo device could compromise the stabilization it provides and may not effectively address skin integrity issues.