A nurse in a clinic is reviewing the laboratory values of a client who has primary hypothyroidism.
Which of the following laboratory values should the nurse anticipate an elevation of?
Free T4
Serum T3
Serum T4
Thyroid stimulating hormone (TSH)
The Correct Answer is D
A. In primary hypothyroidism, the thyroid gland fails to produce sufficient thyroid hormone.
Consequently, free T4 levels are typically decreased.
B. Although serum T3 levels may also decrease in primary hypothyroidism due to impaired thyroid function, TSH is the primary marker used for diagnosis and monitoring.
C. Similarly, serum T4 levels may decrease in primary hypothyroidism due to decreased synthesis by the thyroid gland.
D. In primary hypothyroidism, the anterior pituitary gland releases more TSH to stimulate the thyroid gland to produce thyroid hormones. Therefore, elevated TSH levels are characteristic of primary hypothyroidism.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Ondansetron is an antiemetic commonly used to prevent nausea and vomiting, and it is not typically associated with nephrotoxicity.
B. Diphenhydramine is an antihistamine used for allergy symptoms and as a sleep aid. It is not known to cause nephrotoxicity.
C. Vancomycin is an antibiotic that can cause nephrotoxicity, especially when administered in high doses or in individuals with impaired renal function. Monitoring renal function is crucial when using vancomycin.
D. Omeprazole is a proton pump inhibitor used to reduce gastric acid secretion and treat conditions such as gastroesophageal reflux disease (GERD) and peptic ulcers. It is not associated with nephrotoxicity.
Correct Answer is B
Explanation
A. Aluminum hydroxide can lead to increased serum magnesium levels, but this is not the reason for its preference in chronic kidney disease.
B. Aluminum hydroxide is preferred because it binds to dietary phosphate, reducing serum phosphorus levels in patients with chronic kidney disease who are prone to hyperphosphatemia.
C. Aluminum hydroxide does not significantly affect serum potassium levels.
D. Aluminum hydroxide can lead to decreased serum calcium levels due to binding, but this is not the primary reason for its preference in chronic kidney disease.
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