title: The use of oral radiographic contrast agents in the management of hyperthyroidism.
abstract: Oral iodinated radiographic contrast agents such as ipodate and iopanoic acid form an important part of the armamentarium used to treat hyperthyroidism. They rapidly and dramatically reduce serum triiodothyronine (T3) levels by inhibiting conversion of thyroxine (T4) to T3 in the periphery and by blocking secretion from the thyroid. Potential risks from the large iodine load resulting from their use limit their widespread applicability. In addition, they are ineffective when used alone on a long-term basis. However, these agents may be especially useful in treating thyrotoxic patients preoperatively, in neonatal Graves' disease, in massive levothyroxine ingestion, and when other conventional antithyroid drugs are unsuccessful or contraindicated.
authors.affiliation: Department of Medicine, University of Illinois at Chicago, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Fontanilla
authors.forename: A B
authors.initials: AB
authors.lastname: Schneider
authors.forename: D H
authors.initials: DH
authors.lastname: Sarne
mesh_terms: D000284:Administration, Oral; D000818:Animals; D013956:Antithyroid Agents / Q000627:therapeutic use; D004305:Dose-Response Relationship, Drug; D006801:Humans; D006980:Hyperthyroidism / Q000097:blood / Q000188:drug therapy*; D007457:Iodine Radioisotopes / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D013963:Thyroid Hormones / Q000502:physiology; D014284:Triiodothyronine / Q000097:blood
chemical_list: D013956:Antithyroid Agents; D007457:Iodine Radioisotopes; D013963:Thyroid Hormones; D014284:Triiodothyronine