07-29-2011, 05:08 PM
A 39-year-old HIV-positive man has Pneumocystis jiroveci (formerly carinii) pneumonia. He has had progressive weakness, fatigue, and weight loss for 1 month, and he has significant dyspnea at rest.
Laboratory Studies
Free thyroxine 0.9 ng/dL
Triiodothyronine 22 ng/dL
Thyroid-stimulating hormone 0.3 μU/mL
Which of the following statements about this patient’s condition is true?
( A ) A thyroid scan and radioactive iodine uptake test are indicated.
( B ) Liothyronine (triiodothyronine) treatment will improve his prognosis.
( C ) Peripheral conversion of thyroxine to triiodothyronine is significantly reduced.
( D ) Serum thyroid hormone protein binding is increased.
( E ) Magnetic resonance imaging scan of the pituitary gland should be obtained.
Laboratory Studies
Free thyroxine 0.9 ng/dL
Triiodothyronine 22 ng/dL
Thyroid-stimulating hormone 0.3 μU/mL
Which of the following statements about this patient’s condition is true?
( A ) A thyroid scan and radioactive iodine uptake test are indicated.
( B ) Liothyronine (triiodothyronine) treatment will improve his prognosis.
( C ) Peripheral conversion of thyroxine to triiodothyronine is significantly reduced.
( D ) Serum thyroid hormone protein binding is increased.
( E ) Magnetic resonance imaging scan of the pituitary gland should be obtained.