Endo Flashcards
cortisol causes
BP regulation glucose metabolism immune fxn inflammatory response insulin release
aldosterone causes
normally low K
inc Na, blood volume and pressure
androgens causes
produced DHEA
ACTH causes
release of cortisol from cortex (outer part) of adrenal gland
Addisons dz Patho
primary adrenal insufficiency
deficiency of aldosterone, cortisol, and androgen
zona fasciculata
problem w/ adrenal glands
Addisons dz Patho
primary adrenal insufficiency
deficiency of aldosterone, cortisol, and androgen
zona fasciculata
problem w/ adrenal glands
acute cause of primary adrenal insufficiency
massive adrenal hemorrhage
secondary adrenal insufficiency due to problem w/
pituitary
tertiary adrenal insufficiency due to problem w/
CRH secretion –> adrenal glands won’t product cortisol
head trauma or intracranial tumors
primary adrenal insufficiency labs
adrenal CRH: high ACTH: HIGH cortisol: LOW CRH stim response: inc ACTH aldosterone: low renin: high
secondary adrenal insufficiency labs
pituitary CRH: high ACTH: LOW cortisol: LOW CRH stim response: no/dec ACTH aldosterone: low renin: normal/low
tertiary adrenal insufficiency labs
hypothalamus CRH: low ACTH: low cortisol: low CRH stim response: exaggerated/prolonged aldosterone: low renin: normal/low
adrenal crisis sx and labs
hypotension or shock, vomiting, abd pain
F, AMS
from withdrawal of steroids
dec Na, inc K, dec glu
primary adrenal insufficiency sx
hyperpigmentation (inc ACTH) salt craving (dec aldosterone) hypoNa, orthostatic hypoTN (dec aldosterone) kyperK, metabolic acidosis (dec aldosterone)
secondary and tertiary adrenal insufficiency has normal
aldosterone levels
adrenal insufficiency BIT
AM serum cortisol level
low cortisol = adrenal insufficiency
adrenal insufficiency confirmation test
cosyntropin stimulation test (ACTH stim)
adrenal insufficiency tx
glucocorticoid and mineralocorticoid replacement: hydrocortisone/dexamethasone and fludrocortisone (primary only)
ER w/ hypoTN: IV fluids and IV hydrocortisone
secondary: glucocorticoid
cushings syndrome MOA
high cortisol levels in blood
cortisol function
circadian rhythm
rise in AM to help us wake up, and decreases in PM to help go to sleep
maintain BP
dec inflammatory and immune response
MCC Cushing disease
pituitary adenoma
MCC Cushing syndrome
exogenous steroid use
Cushing BIT
overnight low dose dexamethasone test
24h free urine cortisol
suppression= Cushing
no suppression= adrenal/ectopic ACTH secreting tumor
GLP1 AE
“-tide”
pancreatitis
SGLT2 AE
“-flozin”
UTI
yeast infx
metformin AE
lactic acidosis
no IV contrast
macrocytic anemia, renal impairment
GI issues, metallic taste
type I DM pathophys
autoimmune pancreatic islet beta cell destruction and GAD abs
DMT1 labs
A1c > 6.5 fasting glucose >126 on 2 occasions random glucose >200 OGTT 2h >200 ABSENT C PEPTIDE islet leukocytic infiltrate
rapid insulin
lispro
aspart
short acting insulin
regular
intermediate acting insulin
NPH
long acting “basal” insulin
glargine
Lantus
Levemir
dawn phenomenon
hyperglycemia between 3AM and 8AM
increase night insulin
somogyi effect
nocturnal hypoglycemia at 3AM
high glucose levels by 7AM
decrease night insulin
DMT2 criteria labs
A1c >6.5 fasting glucose >126 on 2 occasions random glucose >200 OGTT 2h >200 ELEVATED C PEPTIDE amyloid polypeptide deposits in pancreas
DM screening
adult w/ BMI >25 and triglycerides >250 or HDL <35
starting at 45yo
repeat every 3yrs if normal
metformin CI if
GFR <45
hyperosmolar hyperglycemic state MC in pts w/
DMT2
infection
hyperosmolar hyperglycemic state sx
polyuria, dehydration, lethargy, seizures, coma, death
gradual onset, blurred vision, slurred speech, weakness,
hypotension, AMS
hyperosmolar hyperglycemic state tests
glu 600-2400 high serum osmolality (>320) glycosuria, inc BUN/Cr negative ketones hyponatremia
hyperosmolar hyperglycemic state tx
agressive IV fluids w/ NS
replete electrolytes (K)
IV insulin after fluids
diabetic ketoacidosis causes
insulin non compliance
new diabetic dx
MCC infection
diabetic ketoacidosis sx
abd, N/V, dehydration, fruity breath
kussmaul respiration
diabetic ketoacidosis labs
ketonuria random glucose 250-600 metabolic acidosis total body K dec high anion gap leukocytosis
diabetic ketoacidosis tx
IV fluids
K replacement before insulin
IV insulin
bicarb for severe acidosis
metabolic syndrome criteria
waist circumference: >40in (M), >35in (F)
glucose >100 or tx of hyperglycemia
HDL: <40 M, <50 F or tx HDL
BP: >135 systolic or >85 diastolic or tx HTN
triglyceride: >150 or tx triglyceride