these are the definitions of negative feedback and positive feedback
(-) the rise of and end product inhibits the release of its stimulator
(+) the rise of the end product triggers the release of its inhibitor
These are the 4 main causes of Thyroid hormone "leakage" and their MOA
what are
-Hashi-toxicosis (autoimmune inflammation)
-dequarvains subacute (post-viral inflammation)
-post-partum (inflammation d/t increased demand from pregnancy)
-Amiodarone toxicity (release iodine = overproduction; inflammation = leakage)
These are the 4 diagnostic tests for a thyroid nodule
and the reasons for getting each one
what are
-TFTs (confirm thyrotoxicosis vs hypothyroidism, hot vs cold)
-Thyroid Scan (uptake, activity)
-U/S (size, location)
-FNA (confirm cancer, do when nodule is over 1cm or "cold"/low TSH)
How?
Both
hyperparathyroid : too much PTH = too much calcium production (kidney can't handle excreting it all, calcium gets stuck in the kidney + crystallizes)
hypoparathyroid : not enough PTH = not enough calcium reabsorption (gets stuck in the kidney + crystallizes)
these are the levels for IMPAIRED (pre-diabetes)
FBS :
GluTolerance :
HgA1c :
FBS = 100-125
GluTolerance = 140-200
HgA1c = 5.7% to 6.5%
these are the four main causes of Cushing's syndrome
exogenous steroids
Cushing's disease (ACTH secreting pituitary adenoma)
Adrenal adenoma or carcinoma
ectopic ACTH production (paraneoplastic)
these are the three treatment options for thyroid storm
what are
-Iv beta blockers (propranolol or labetalol)
-CCB (verapamil)
-PTU
These are the three signs of myxedma coma
what are
-hypercapnic (CO2)
-hypothermic (COLD)
-hyponatremic (SODIUM)
elevation of what
causes "stones, bones, groans, moans, thrones, psychiatric overtones".
Why?
hypercalcemia leading to hyperpolarization of membranes (too hard for membranes to reach threshold)
these are the tests you can get for measuring average BG in
-last 3 months
-last 2 weeks
-last 2 weeks
what are
-HgA1c
-fructosamine
-glycated albumin
these are the 4 things that cause death when GH hypersecretion is not treated
HTN
DM
CVD
Colon cancer
These are the 6 "apathetic" thyrotoxicosis symptoms
(experienced in older people who take beta blockers)
what are
-weakness
-memory loss
-sinus tachycardia
-dizziness
-Afib
-Unintentional weight loss
pneumonic: "With Medications, Symptoms Don't Appear Usual"
these are the hallmarks of Riedel"s thyroiditis
fibrosis and infiltration by plasma cells
these are the treatments for
-Hypo-parathyroidism
-Acute Hypo-parathyroidism
-kidney stones d/t Hypo-parathyroidism
hypo-pth : PTH, Calcitriol, Calcium
Acute : IV Calcium gluconate
Inhibit kindey stone formation : thiazide dieuretics
these are the complications of DM
pneumonic "Diabetes Can2 Really2 Equal Many Negative2 Problems2"
what are
-DKA/hypoglycemia
-CAD/CVD
-Retinopathy/renovascular disease
-Erectile dysfunction
-microvascular disease (ex: pituitary ischemic infarct)
-Neuropathy/Nephropathy
-PVD + primary HTN
These are the 5 stigmata of Acromegaly d/t GH hypersecretion
-enlarged tongue
-coarse skin and hair
-enlargement of the bones (face, hands, feet)
-frontal bossing
-bromhidrosis
what are
-hyper-defacation
-Afib
-Bulging eyes/lid lag
-anxiety/psychosis
-osteoporosis
-unintended weight loss
these are the 4 indications for thyroidectomy
what are
-thyroid cancer or suspicion
-hyperthyroidism
-cosmetic
-compressing sx (hoarseness, dysphagia)
this is the most common XR finding of primary Hyperparathyroidism
other common finding is Rugger-Jersey spine
These are the symptoms d/t SIADH when sodium drops below
130 ___ ___ ___ ___ ___
120 ___ ___
115 ___ ___ ___ ___
130: anorexia, dyspnea, fatigue, dulled senses
120: vomiting, cramping
115: lethargy, seizures, coma, confusion
what are
-TRAb TSH receptor Ab
-TPOAb anti-thyroid peroxidase Ab
-TgAb anti-thyroglobulin Ab
what are
-head (expressionless, pallor)
-neck (slurred speech, hoarseness)
-hands
-feet
-supraclavicular
true or false:
PTH increases phosphate levels via increased osteoclast activity
true, it just doesn't increase phosphate levels overall b/c it inhibits it's reabsorption in the kidney
overall, PTH lowers phosphate levels
this is the formula for calculating serum osmolarity
(2 x Na) + (BUN / 2.8) + (Glu/18)
normal serum osml = 280-295