OME Thyroid Flashcards
T4 Function
MOve, Mentation, Metabolism
Hyperthyroid sx
Tachycard Diarrhea (active bowel) Heat intolerance increase DTR Wt Loss Afib.
Hyperthyroid DX
1st TSH
FT4
Best: RAIU
GRaves DX and TX
DX: Thyroid stimulating Ab
Thionamides: PTU (pregnant), Methimazole.
If you use radio and surgery watch Exophthamos and pretibial Myxedema. They may get worse, so use surgery and steroids.
Thyroiditis
Thyroid will break open and transient hyperthyroid.
If fixes itself then returns to normal. If not Hashimoto’s.
If tender than DeQuevian- infection, etc.
If nontender- Hashimoto’s or autoimmune etc.
Multinodular goiter and Toxic Adenoma
RAIU will show nodules hot
Factitious and Stroma Ovarii
Cold Thyroid on RAIU
Get a Sestamibi scan of ovaries before confronting pt in medical field trying to lose weight.
RAIU summary
Graves- diffuse uptake
Thyroiditis- Cold thyroid
MNG/ Toxic Adenoma - Nodules
Factitious + Stroma Ovarri- Cold
Thyroid Storm
Afib/Shock
Fever >or = 104
Hypotensive
AMS
TX: In order IVF and Cooling Blanckets Propranolo PTU/Methimazole Steroids (to reduce conversion of T4 to T3)
HyperThyroid TX
Surgery- Graves
Radioactive I2 Ablation- MNG+Toxic Adenoma, Stroma Ovarii.
Hypothyroids
Most common cause is Iatrogenic (treating Graves)
then Hashimoto’s.
TX: Levothyroxine
Sxs: Bradycardia, Constipation, Cold intolerance, Dec DTR, Weight Gain
If Subclinical (TSH is up, but no symptoms): When TSH is greater than 10 treat, or if they gain symptoms.
Doesn’t matter cause of hypothyroid, just treat.
Myxedema Coma
Coma
Hypothermia
Hypotension (like thyroid storm)
Tx: IVF (warm), Warming blankets, IV T4 (if that doesn’t work IV T3)