A patient with Graves disease would be expected to have which of the following thyroid hormone levels? A) TSH: , T3: , T4: B) TSH: ¯, T3: , T4: C) TSH: , T3: ¯, T4: D) TS... A patient with Graves disease would be expected to have which of the following thyroid hormone levels? A) TSH: , T3: , T4: B) TSH: ¯, T3: , T4: C) TSH: , T3: ¯, T4: D) TSH: , T3: ¯, T4: ¯
Understand the Problem
The question is asking which thyroid hormone level pattern is expected in a patient with Graves disease. Graves disease is an autoimmune disorder that leads to overactivity of the thyroid gland, thus we need to analyze the expected levels of TSH, T3, and T4 for this condition.
Answer
TSH: ¯, T3: , T4:
The final answer is B: TSH: ¯, T3: , T4:
Answer for screen readers
The final answer is B: TSH: ¯, T3: , T4:
More Information
In Graves' disease, the body's immune system attacks the thyroid gland, leading to excessive production of thyroid hormones T3 and T4, while TSH is suppressed due to negative feedback on the pituitary gland.
Tips
A common mistake is to overlook the suppressive effect of high thyroid hormone levels on TSH. Remember, high T3 and T4 usually lead to low TSH.
Sources
- Diagnosis and management of Graves' disease - PMC - pmc.ncbi.nlm.nih.gov
- Hyperthyroidism and Graves' Disease | University of Michigan Health - uofmhealth.org
- Hyperthyroidism: Diagnosis and Treatment - AAFP - aafp.org
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