Assisted Conception Flashcards
What can cause infertility?
male factor tubal disease PCOS endometriosis unexplained
What are the types of assisted conception?
surrogacy IUI (intrauterine insemination) IVF ICSI DI (donor insemination)
Who gets assisted conception (not infertile)?
fertility preservation
homosexual couples
pre implant genetics
blood born viruses
Who qualifies for assisted conception?
regular unprotected sex, 12 months - start investigating
regular unprotected sex, 24 months and haven’t found an explanation - treatment
if an explanation found in those 12 months and its obvious they aren’t going to get pregnant naturally - start treatment
What tests do they do before starting assisted conception?
check woman is ovulating - progesterone levels 7 days before end of cycle e.g. day 21 of 28 day cycle
semen analysis
hysterosalpingogram - tubal disease?
What are regular periods very indicative of?
ovulation
What are the criteria for IVF?
2 yrs regular unprotected sex female <4 units alcohol/week BMI 19-29 for both smoking cessation rubella negative up to date smear no STIs screen for BBVs - doesn't mean you can't have it - do ICSI folic acid 0.4mg
What decides which assisted conception is used?
ovarian reserve - anti mullerian hormone
What is step 1 of IVF?
down regulate - 'quiet ovary' synthetic GnRH (gonadotrophin releasing hormone) ovary starts producing follicles and all of them get bigger - as opposed to normally just the primary follicle
How do you assess step 1 of IVF?
transvaginal USS - predicts how many eggs will be released on ovarian stimulation
What is step 2 of IVF?
ovarian stimulation - HCG injection –> follicular development
What is step 3 of IVF?
egg retrieval - 36 hours after stimulation
male produces sperm sample
What is step 4 of IVF?
fertilisation - all eggs they collect in a petri dish
What is step 5 of IVF?
transfer - day 5 after egg retrieval (blastocyst stage)
1embryo (max. is 2 - risk of multiple pregnancies)
give progesterone - luteal support
When do you do a pregnancy test?
16 days