TY - CHAP M1 - Book, Section TI - Hyperthyroidism A1 - Idrose, Alzamani Mohammad A2 - Tintinalli, Judith E. A2 - Stapczynski, J. Stephan A2 - Ma, O. John A2 - Yealy, Donald M. A2 - Meckler, Garth D. A2 - Cline, David M. PY - 2016 T2 - Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e AB - Thyroid hormone affects all organ systems and is responsible for increasing metabolic rate, heart rate, and ventricle contractility, as well as muscle and central nervous system excitability. Two major types of thyroid hormones are thyroxine and triiodothyronine. Thyroxine is the major form of thyroid hormone. The ratio of thyroxine to triiodothyronine released in the blood is 20:1. Peripherally, thyroxine is converted to the active triiodothyronine, which is three to four times more potent than thyroxine. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1132929147 ER -