Multiple Choice
A 72-year-old man is hospitalized for cough, purulent sputum, and shortness of breath. His medical conditions include type 2 diabetes and hypertension. A chest x-ray reveals right lower lobe pneumonia, and treatment is started with supplemental oxygen and antibiotics. While hospitalized, the patient develops persistent sinus tachycardia. Thyroid function tests ordered during the subsequent work up reveal: 
Which of the following is the primary contributor to the decreased total T3 level in this patient?
A) Decreased conversion of T4 to T3 in peripheral tissue
B) Decreased iodination of thyroglobulin
C) Decreased T3 production in the thyroid gland
D) Iodine deficiency
E) Pituitary resistance to thyrotropin-releasing hormone
Correct Answer:
Verified
Correct Answer:
Verified
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