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. Wheezing is not typically associated with hyperkalemia. It can be seen in conditions such as asthma or chronic obstructive pulmonary disease (COPD).
B. Hyperkalemia can lead to neuromuscular manifestations, including decreased deep tendon reflexes due to suppression of neuromuscular excitability.
C. Cerebral edema is not a typical manifestation of hyperkalemia. It may occur in conditions such as hyponatremia or severe metabolic acidosis.
D. Gastrointestinal manifestations of hyperkalemia are typically related to smooth muscle involvement and can include hyperactive bowel sounds or diarrhea.
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