subfertility Flashcards
GTGs and SIPs
risk of miscarriage 30-34y
15%
risk of miscarriage 35-39y
24%
risk of miscarriage 40-44y
51%
risk of miscarriage >45y
93%
risks for mothers >35yo
Stillbirth, ectopic, miscarriages, GDM, placenta previa, placental abruption, PIH, C/S
best test of ovarian reserve
AMH
% of IVF cycles using electively frozen eggs
<2%
risks of elective egg freezing
- Age –> PET, GDM, C/S
- OHSS
- Procedural –> bleeding, infection, VTE
10 frozen egg cumulative live birth rate <35yo
42.8%
10 frozen egg cumulative live birth rate >36yo
25.2%
commonest treatment related adverse outcome of IVF
multiple pregnancies
risks of multiple pregnancies
PIH PTL PPH OVB GDM
rate of multiple pregnancies in ART (2009 vs. 2014)
24% vs. 15.9%
incidence of mild OHSS
33%
combined incidence of moderate-severe OHSS
3.1-8%
After OHSS, risk of PET
21.2%
after OHSS, risk of PTL
36%
risk factors for OHSS
previous OHSS
PCOS
increased AFC or AMH
Multiple pregnancy
Protective factor against OHSS
use of GnRH antagonists
Criteria for critical OHSS
- tense ascites or hydrothorax
- Hct >0.55
- WBC >25
- Oliguria/anuria
- VTE
- ARDS
risk of miscarriage 25-29y
11-12%
risk of miscarriage 20-24y
9-11%
% of congenital CMV neonates symptomatic at birth
10-15%
% of shoulder dystocias complicated by brachial plexus injuries
2.3-16%
% of brachial plexus injuries with permanent damage
<10%
incidence of chronic pelvic pain after ONE episode PID/TOA
12%
incidence of chronic pelvic pain after TWO episodes of PID/TOA
30%
incidence of chronic pelvic pain after THREE episodes of PID/TOA
67%
raised AFP in 2nd trim screen
FGR placental abruption female demise >24/40 PTL spont misc
raised bHCG and inhibin A 2nd trim screen
PTL PIH PET IUFD FGR
low estriol 2nd trim screen
oligo
IUFD
SGA/LBW
spont misc
low PAPP-A 1st trim screen
PET LBW PIH PTL Miscarriage
low bHCG 1st trim screen
spont misc
LBW
combined test for downs
PAPP-A
bHCG
Nuchal translucency
quadruple test
AFP
bHCG
estriol
inhibin A
risk of ovarian failure after bilateral ovarian endometrioma cystectomy
2.4%
intraop complication rate for DIE
2.1%
total postop complication rate for DIE
- 9%
9. 5% minor, 4.6% major
recurrence rate of DIE at 2 years following surgery
5-25%
ovarian conservation at TAH for endometriosis - risk of recurrent pain
6x greater
ovarian conservation at TAH for endometriosis - risk of reoperation
8.1x greater
according to NICE, what % of couples will conceive in 1 year
80%
according to NICE, what % of couples will conceive within 2 years (cumulative rate)
> 90% (of those who did not conceive, half will do so in the second year)
incidence of miscarriage following ART (singleton)
15-20%
incidence of ectopic pregnancy following ART
2-8%
OR of stillbirth following ART
2.4
PTL after ART (singleton)
11.2% (may be iatrogenic)
OR of placenta previa following ART
3.76
absolute risk of structural abnormalities in fetus following ART
30-40% increased incidence;
absolute risk 6.5-7%
absolute increase in risk PIH/PET following ART
~2%
absolute increase in risk GDM following ART
~1%
% cause of male infertility
30%
% cause of infertility by ovulatory disorder
25%
% cause of infertility by tubal damage
20%
% cause of infertility by uterine or peritoneal disorders
10%
% unexplained infertility contribution
25%
normal semen volume
> 1.5ml
normal pH semen
> 7.2
normal sperm concentration
> 15mil
normal total sperm number
> 39mil
normal total motility semen analysis
40% or more motile;
or 32% of more with progressive motility
normal sperm vitality
58% or more live spermatozoa
normal sperm morphology
4% or more normal forms
ovarian reserve testing: AFC low response
<4
ovarian reserve testing: AFC high response
> 16
ovarian reserve testing: AMH low response
<5.4
ovarian reserve testing: AMH high response
> 25 pmol/l
ovarian reserve testing: FSH low response
> 8.9
ovarian reserve testing: FSH high response
<4
when to check progesterone to confirm ovulation
day 21 of a 28 day cycle (mid-luteal phase)
how long to delay pregnancy after rubella vaccination
> 1/12
how long to delay pregnancy after RAIT
> 6/12
average pregnancy rate for ICSI
33% per ET
low FSH, low testosterone
hypogonadotrophic; PRE-Testicular:
- kallmanns
- prader willi
- CHARGE
- pituitary tumor
- TBI
high FSH, low testosterone
hypergonadotrophic; TESTICULAR:
- klinfelter
- noonan
- cryptorchism
- varicocele
- idiopathic
FSH normal, testosterone normal
post-testicular: CAVD, CF, infxn, vasectomy, immotile cilia, sexual dysfunction
incidence of POI
1%
incidence of early ovarian ageing
10%
early ovarian ageing definition
low ovarian reserve and accelerated loss of ovarian follicles in the early thirties (leading to menopause <45yo)
rising FSH in menopause naturally leads to
- advanced follicle recruitment
- shortened cycles
- increased multifollicular development (increased risk of twinning)
- accelerated rate of follicle loss
risk of OHSS in PCOS
10%
VTE risk in OHSS
0.7-10%
overall prevalence of congenital uterine anomalies
5.5%
incidence of MRKH
1:5000 births
investigation of choice for congenital uterine anomalies
3D TVS +/- MRI
management for functioning rudimentary horns
surgical removal
management for bicornuate uterus/didelphys
none recommended
management for septate uterus
hysteroscopic metroplasty or hysteroscopic transcervical diversion
what proportion of MRKH have renal anomaly
40%
12% have absent kidney
prognosis without intervention for unexplained recurrent miscarriage
75%
% of recurrent miscarriages that are unexplained
50%
antiphospholipid syndrome in recurrent miscarriage
15% (2-3% in general population only)
incidence of genetic abnormalities in parents with recurrent misc
2-5%
robertsonian translocation 2%
incidence of genetic abnormalities in recurrent misc
30-57%
subfertility affects?
15% (1/6-7) of population
endometrial thickness for embryo transfer
> 5mm
clomifene will be successful in what %
ovulation will occur in 70-80%
failure of clomifene
10%
resistance to clomifene
20%
% combined male/female fertility factors
40%
PCOS accounts for what % of women with anovulatory infertility
80-90%
PCOS - what BMI prior to ovulation induction
<30; weight loss 5-10% can be very effective
unexplained infertility - how long to wait before IVF
attempt to conceive for a total of 2 years (including pre-referral period) before IVF
mild OHSS ovarian size
<8cm
moderate OHSS ovarian size
8-12cm
severe OHSS ovarian size
> 12cm
when to perform endometrial scratch
7 days prior to onset of menstruation, immediately before stimulation treatment
IVF: number of cycles up to age 40
3
IVF: number of cycles for age 40-42
1 if no evidence of low ovarian reserve and no previous IVF
IVF: success >43yo
5%
turner syndrome in what % of first trimester miscarriages
10%
most common cardiac anomaly in turner’s syndrome
bicuspid aortic vale, 30%
risk of aortic dissection in turners syndrme
absolute risk 1%; highest risk in third trimester and postpartum.
pregnancy CI in TS (regarding aortic dissection)
- aorta diameter ?35mm or 25mm2
- history of aortic surgery
- uncontrolled HTN despite Rx
- presence of bicuspid valve or coarctation are risk factors
how often to do cardiac/aortic MRI in TS women considering pregnancy
every 5 years
conception rate in TS
8%;
increased risk of miscarriage 31-45%
TS management in pregnancy
- MDT
- assessment at end of 1st and 2nd trimesters
- assessment monthly in third trimester
- echo at each visit, and MRI if increased aortic size
- delivery in center where acute cardiac surgery is available
- keep PN for 5/7
TS - regular BB if risk factors for dissection:
- pre-existing aortic dilation
- bicuspid aortic valve
- coarctation
- HTN
surrogacy - when is parental order given
not before 6 weeks;
application must be made before 6 months
most common electrolyte disturbance in OHSS
hyponatremia, 56%
mechanism of action of metformin
enhances insulin sensitivity at the cellular level
prevalence of endometriosis in infertile women
50% (compared to 2-10% general population)