module 14 HRT estrogen Flashcards
oral estrogen MOA
absorbed from GI as estrone
- > converted to estrone sulfate in liver
- > continuously converted to estradiol, where concentrations remain steady
oral estrogen use
HRT
oral estrogen AE
inc. production of
- thyroxine binding globulin
- cortico-steroid binding globulin
- sex-hormone binding globulin
- TG, HDL
- clotting factors
VTE
Stroke
oral estrogen Admin
significant 1st pass
once daily dosing
preferred estrogen supplement route
transdermal
transdermal estrogen use
HRT
- menopause s/s
- preserve bone density
transdermal estrogen AE
VTE
stroke
inc. lipids
- less than oral
transdermal estrogen EDU
administer with progestin in women with uterus
vaginal estrogen use
low dose: vaginal atrophy
high dose: vasomotor s/s
vaginal estrogen edu
no sex immediately after
topical estradiol use
HRT
- vasomotor s/s
topical estradiol AE
risk to children and pets
- nipple swelling
- breast development
topical estradiol admin
lotion
gel
spray
phytoestrogen: 3 major types
isoflavones
coumestans
lignans
potent isoflavones:
soybean
chickpea
lentils