THYROID.docx

[THYROID ] Hypothalamus TRH pituitary TSH thyroid to produce T4 T4 released by thyroid gland converts to T3 (active metabolite) Hypothyroid: high TSH, **low T4** Hyperthyroid: **low TSH**, high T3/T4 - Subclinical: low or high w/ **normal T4** - When to tx Hypothyroid: if TSH is 10 low...

[THYROID ] Hypothalamus TRH pituitary TSH thyroid to produce T4 T4 released by thyroid gland converts to T3 (active metabolite) Hypothyroid: high TSH, **low T4** Hyperthyroid: **low TSH**, high T3/T4 - Subclinical: low or high w/ **normal T4** - When to tx Hypothyroid: if TSH is 10 low dose [HYPOTHYROID MEDS] - **Synthroid** - Synthetic preparation of T4 and drug of choice for hypothyroidism - Conversion to T3 - 1.6-1.8 mcg/kg/day for adults \