Thyroid Disorders and Thyroxine
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Questions and Answers

What is the initial preferred starting dose of levothyroxine for treating hypothyroidism in elderly individuals?

  • 150 µg daily
  • 50-100 µg daily
  • 25 µg daily (correct)
  • 200 µg daily

    • Which of the following is a cause of primary hypothyroidism?

  • Low titer of antibodies against thyroperoxidase (TPO)
  • Decreased T4 and T3 levels
  • Autoimmune destruction of the thyroid gland (correct)
  • Excessive TSH secretion by the pituitary gland

    • Which antibodies are found in high titers in patients with Hashimoto’s thyroiditis and atrophic thyroiditis?

  • Antithyroid peroxidase (TPO) antibodies (correct)
  • Antithyroglobulin antibodies
  • Antithyroid stimulating hormone (TSH) antibodies
  • Antithyrotropin releasing hormone (TRH) antibodies

    • What is the physiological function of thyroxine (T4) hormone?

    <p>Regulating metabolism and energy production</p> Signup and view all the answers

    What is the term for a state of excessive thyroid hormone due to hyperfunction of the thyroid gland?

    <p>Thyrotoxicosis</p> Signup and view all the answers

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