What labs are used to diagnose hypo/hyper thyroid?
TSH, T3, and T4. High TSH = hypo and low TSH = hyper. Opposites.
Timeframe for re-check of labs after starting levothyroxine
6-8 weeks (long half-life). Yearly after stable.
Signs and symptoms of hypothyroidism
Dry hair, puffy face, goiter in the neck, slow heartbeat, weight gain, constipation,
infertility, increased risk of miscarriages, irregular menstrual cycle, cold intolerance.
Drug of choice for hypothyroidism
Levothyroxine (Synthroid)
§ Signs and symptoms of hyperthyroidism
Hair loss, bulging eyes, goiter, rapid heartbeat, weight loss, diarrhea, menstrual periods
loss often or longer.
Drug of choice for hyperthyroidism
Methimazole (Tapazole)
Treatment of thyroid storm
high doses of potassium iodide or strong iodine solution are given to suppress thyroid
hormone release. Methimazole is given to suppress thyroid hormone synthesis. Beta
blocker given to reduce HR. additional measures include sedation, cooling, and giving
glucocorticoids and IV fluids.
Result of not treating hypothyroidism during pregnancy:
Permanent neuro-psychological deficits in the child. Decrease IQ/neuropsychological
function. First trimester.
Medication to treat symptoms of hyperthyroidism (notice this is treating
symptoms and not the hyperthyroidism itself):
Beta blockers (tachycardia) - propranolol/atenolol most popular.Non-radioactive iodine.
ADJUNCTIVE THERAPY.
Drug/Food/Supplement interactions with levothyroxine:
Do not take antacids, Calcium or Iron, how to take it (morning 30-60 min b4 eat.
How to confirm a diagnosis of DM prior to beginning treatment:
, Fasting plasma glucose above 126. A random plasma glucose of over 200 plus
symptoms of diabetes, an oral glucose tolerance test of two hours, plasma glucose of
over 200, or a A1C higher than 6.5.
A1c general goals
<7, patients that experience severe hypoglycemia/have a limited life expectancy may
have an A1C goal of <8.
A1c older adults
<8, those with multiple coexisting chronic illnesses, cognitive impairment, or functional
dependence should have less stringent glycemic goals such as <8.0-8.5.
When should insulin be considered?
For treatment of persistent hyperglycemia starting at a threshold of >180.
Early introduction of insulin should be considered if there is evidence of ongoing weight
loss, if symptoms of hyperglycemia are present, or whenA1C levels >10% or BGS >300
At what time interval should A1c be re-checked?
How often should an A1C be monitored when stable or when unstable?
Every 2-3 months and max of 4 times a year. If <7, every 6 months.
At least two times a year if meeting goals and quarterly if meds have changed or not
meeting goals.
Action of Insulin
Anabolic, energy conservation, promotes cellular growth and division.
Pioglitazone contraindications:
Heart failure (severe = no, mild = caution) and bladder cancer. Causes fluid retention.
GLP-1 (abbreviation and examples)
Glucagonlike Peptide - Subcutaneous injections - Dulaglutide (Trulicity), Semaglutide
(Ozempic), Liraglutide (Victoza).
SGLT2i (abbreviation and examples)
Sodium Glucose Cotransporter 2 Inhibitors - Canagliflozin (Invokana), Dapagliflozin
(Farxiga), Empagliflozin (Jardiance).
DPP4-I (abbreviation and examples)
Dipeptidyl Peptidase-4 Inhibitors - Sitagliptin, Saxagliptin, Linagliptin, Alogliptin.