Sub-fertility Flashcards
How common is sub fertility?
14% 1 in 7 couples
When does ovulation occur?
12-16 days before start of next period
What % of couple will concieve following 1 year & 2 year of regular unprotected intercourse?
1 year 84%
2 year 92%
When should someone be referred if not conceived with IUI?
After 6 cycles
Whe should someone be referred following regular unprotected sexual intercourse?
1 year of sexual intercourse or earlier if
>36 years or
known clinical cause of sub fertility
What % subfertilty caused by male and female factors?
Male 20-30%
Female 20-35%
Combine 25-40%
What % of sub fertility is no cause found?
10-20%
What is the most common cause of female infertility?
Ovulation dysfunction
21% of female infertility
How long to sperm survive in female reproductive tract?
7 days
What frequency of sexual intercourse optimises chance of becoming pregnant?
Sexual intercourse every 2-3 days
When trying to become pregnant how much alcohol can the woman/man have?
Woman - 1-2 units, 1-2 times per week
Man 3-4 units/day
A BMI of what cut off for men and women is associated with taking longer to conceive?
BMI 30
How can ovarian response to predicted gonadotrophin stimulation in IVF?
- Total astral follicle count on TVUS, Day 3 cycle
- <4 low responded
- >16 high responder - AMH
- <5.4 low responder
- >25 high responder - FSH
- >8.9 low response
- < 4 high response
Regular menus up to how many days are normally indicative of ovulation?
26-36 days
What blood test confirms ovulation?
Progesterone, 7 days before end of cycle.
Day 21 if 28 day cycle
WHO classification of ovulation disorders. What is group 1? What would be seen on blood?
Hypogonadotrophic hypogonadism
- Low LH/FSH
- Normal prolactin
- Low oestrogen
10% ovulation
WHO classification of ovulation disorders. What is group 2? What would be seen on blood?
Hypothalamic pituitary dysfunction
1) LH/FSH abnormality
2) Normal oestrogen
85% ovulation disorders
PCOS
WHO classification of ovulation disorders. What is group 3? What would be seen on blood?
Ovarian failure
- High gonadotrophins
- Hypogonadism, low oestrogen
4-5% ovulation disorders
What % of sub fertility is caused by tubal factors?
14%
What % of tubal obstruction detected at HSG will be confirmed at laparoscopy?
38%
What % of tubal patency detected at HSG will be confirmed at laparoscopy?
94%
Who should HSG not be offered to?
PID
Previous ectopic
Endometriosis
Need more reliable test - HyCoSy or Lap & Dye