Emergency contraception Flashcards
indications for EC
failure to use contraception
condom break/leak
dislodgement of diaphragm/ cervical cap
missed CHCs
ejaculation on external genitalia
mistimed fertility awareness
sexual assault
MOA of hormonal EC
primary mech is to delay release of egg
may prevent fertilization by inhibiting sperm binding, transport of egg or sperm in fallopian tubes by preventing contractility
what is the Yuzpe regimen
100mcg EE and 1mg norgestrol or 500mcg LNG in 2 doses 12hrs apart
levonorgestrel interferes with conception by
affecting follicular development before LH surge
LNG is most effective if taken ___ after unprotected sex, but is effective up to ___d
72hrs
5d
CIs for LNG
pregnancy
hypersensitivity
breast/liver carcinomas
LNG interactions
rifampin
LNG SEs
N/V, spotting, fatigue, cramps, headache, breast tenderness
most women should have menses within ___wks of taking EC, if no period by ___ they should see the dr
within 3wks
if no period by 3-4wks
T or F: there are harms for repeated use of EC
F- but not as effective as other forms of contraception
how to transition to CHC from EC
start CHC on that day or the next day and use BU F7D
ulipristal MOA
selective progesterone receptor antagonist and partial agonist with direct inhibitory effect on follicular rupture
T or F; Ulipristal is more effective than LNG because it can prevent ovulation even after LH surge has started
T
what should you do if pt wants to start CHC after ulipristal
hold CHC for 5 days after ulipristal, then use BU F14D after starting CHC
CI for ulipristal
do not use for missed pills if on hormonal contraception
known pregnancy
