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 A
Explanation
A. Certain malignancies, particularly lung cancer, can produce ectopic antidiuretic hormone (ADH) or ADH-like substances, leading to SIADH. It's important to inquire about a history of lung cancer due to its association with SIADH.
B. Osteoarthritis is a degenerative joint disease and is not known to cause SIADH.
C. Dyspepsia refers to upper gastrointestinal discomfort and is not associated with SIADH.
D. Liver cirrhosis can lead to various complications, including hepatic encephalopathy and ascites, but it is not typically associated with SIADH.
Correct Answer is A
Explanation
A. Hyperkalemia is a common finding in the oliguric phase of acute kidney injury due to impaired renal function, leading to decreased potassium excretion.
B. Hypomagnesemia is not typically associated with the oliguric phase of acute kidney injury.
C. In the oliguric phase, the glomerular filtration rate is typically decreased, not increased.
D. In acute kidney injury, creatinine levels typically rise due to decreased renal function, rather than decrease.
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