adrenal Flashcards
1
Q
adrenals anatomy + hormone
A
cortex:
glomerulosa - mineralocorticoid
fasciculata - glucocorticoid
reticularis - androgens
medulla: catecholamines
2
Q
dexamethasone CRH test
A
dexamethasone 0.5 mg every 6 hours over 2 days for a total of 8 doses, administering CRH (1 μg/kg, intravenously) 2 hours after the last dose of dexamethasone, and measuring the serum cortisol 15 minutes later
pseudo-Cushing: <1.4 mcg/dl
3
Q
Ddx
A
CAH
Adrenal neoplasms
Cushing Syndrome
4
Q
1st step in evaluation
A
determine if with hx of glucocorticoid use
4
Q
awake midnight cortisol test N value
A
<7.5 mcg/dl
5
Q
asleep midnight cortisol test N value
A
<1.8 mcg/dl
6
Q
1st step to determine source of cortisol
A
serum ACTH
7
Q
determine if ectopic or pituitary ACTH
A
CRH test
high dose dexa test
petrosal venous catheterization
8
Q
A
9
Q
A
10
Q
A
