Most common cause of hyperthyroidism

Most common cause of hyperthyroidism

Question 1

The most common cause of hyperthyroidism is:

Graves disease.

A pituitary tumor.

Subacute thyroiditis.

A toxic uninodulargoiter.

Question 2

An elderly client presents with atrial fibrillation. Which of the following lab tests is important in forming the diagnosis?

Comprehensive metabolic panel (CMP).

Thyroid-stimulating hormone (TSH).

C-reactive protein (CRP).

Complete blood count (CBC).

Question 3

A client presents with clinical manifestations of hyperthyroidism. The differential diagnosis includes Graves disease and subacute thyroiditis. Which of the following findings is consistent with subacute thyroiditis?

A 24-hour radioactive iodine uptake (RAIU) demonstrating increased uptake.

A 24-hour radioactive iodine uptake (RAIU) demonstrating a “cold” nodule.

A 24-hour radioactive iodine uptake (RAIU) demonstrating decreased uptake.

A fine-needle aspiration is required for diagnosis of subacute thyroiditis.