Causes and Types of Hypothyroidism Quiz
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Questions and Answers

What is the primary cause of cretinism?

  • Excessive iodine consumption
  • Autoimmune thyroiditis
  • Congenital insufficiency of thyroid function (correct)
  • High TSH levels with normal T4

Which type of hypothyroidism is characterized by hypersecretion of TSH and a decrease in T4 levels?

  • Manifest primary hypothyroidism (correct)
  • Secondary hypothyroidism
  • Autoimmune hypothyroidism
  • Latent primary hypothyroidism

What is the main drug used in the treatment of hypothyroidism?

  • Levothyroxine sodium (correct)
  • Antibiotics
  • Iodine supplements
  • Thyroid hormone blockers

What levels would be observed in a patient with secondary hypothyroidism?

<p>Low TSH and low T4 (C)</p> Signup and view all the answers

How is the starting daily dose of levothyroxine sodium determined for the elderly?

<p>12.5 mcg per day (B)</p> Signup and view all the answers

What confirms autoimmune thyroiditis as the root cause of hypothyroidism?

<p>Presence of thyroid antibodies (A)</p> Signup and view all the answers

What is the primary laboratory finding that confirms the diagnosis of autoimmune thyroiditis as the cause of hypothyroidism?

<p>Antibodies to thyroglobulin and thyroid peroxidase (C)</p> Signup and view all the answers

What is the recommended daily intake of thyroxine during pregnancy?

<p>1.9 mcg/kg per day (D)</p> Signup and view all the answers

What is the recommended plasma TSH concentration threshold for initiating replacement therapy in subclinical hypothyroidism?

<p>&gt;10 mU/l (C)</p> Signup and view all the answers

How is replacement therapy for primary hypothyroidism monitored?

<p>Monitoring TSH levels (B)</p> Signup and view all the answers

Which of the following is NOT a risk factor for developing hypothyroid coma?

<p>Warm climate (A)</p> Signup and view all the answers

How is replacement therapy for central hypothyroidism monitored?

<p>Monitoring T4 levels (D)</p> Signup and view all the answers

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