A patient is being evaluated for thyroid dysfunction.The patient's medications include aspirin,digoxin,chlorothiazide,and insulin.The nurse knows that the laboratory work may be affected by which of these medications?

Question

Quizplus · Accepted Answer

Several drugs increase the serum level of T₄ by displacing protein-bound T₄.Drugs that displace T₄,including heparin (both unfractionated and low-molecular-weight heparins),cause an increase in serum T₄ levels.Salicylates (aspirin)and furosemide (Lasix)also raise T₄ serum levels by the same mechanism.

A Patient Is Being Evaluated for Thyroid Dysfunction