Infertility Flashcards
How often is no cause found with RPL?
50-70%
Risk of pregnancy loss with GS?
12%
Risk of pregnancy loss with YS?
8%
Risk of loss with FP?
1-7%
Risk of loss with FHR?
3-5% if no loss
15-25% if RPL
Testing POC and 46 XX? Next steps?
Should do reflex DNA extraction and analysis of maternal blood by
microsatellite analysis can differentiate maternal contamination from fetal source
NCCAH and trying to conceive
GC (prednisone 2.5-5 mg qD> hydrocortisone 20 -25 mg/day) recommended as initial
therapy. Metabolized by placental 11BHSD Type 2
If no response, can add OI agent or increase to 7.5 mg/d
Majority not infertile.
Increased SAB risk (25-30%), reduced to 6% w/ tx
Don’t need to tx men unless oligospermia: can do dex 0.25 mg qD or prednisone 5 mg
Overnight DEX suppression test
Dex is potent GC and should suppress ACTH/cortisol if no Cushing
**Best first test when Cushing suspected in patient with hirsutism
Give Dex 1 mg PO 11p-12a
Measure cortisol 8 am
if <1.8 ug/dL then negative
Patients must not be taking estrogen or OCPs: increased CBG causes false positive
If initial screening is normal but strong clinical suspicion, repeat 6 mo or sooner if sx worsening
If first test abnormal, perform 2nddifferent test
If transsphenoidal surgery for Cushings, post op monitoring:
ree T4/PRL w/in 1-2 weeks post op to evaluate for panhypopituitarism
Elevated prolactin: 50-100
oligomenorrhea or amenorrhea
Elevated prolactin 20-50 ng/dL
short luteal phase from poor preovulatory follicular
development
Elevated prolactin > 100
frank hypogonadism w/ low E2 levels (osteoporosis, GU atrophy)
Rule out macroprolactin?
larger forms cleared more slowly, women have normal
mns, pretx serum w/ polyethylene glycol to precipitate macroprolactin to avoid expensive imaging
Primary amenorrhea
No mns by 15 w/ secondary sex characteristics
W/in 5 yrs after thelarche if before age 10
No thelarche by age 13
Spermatogenesis
MEN 1
MEN 2
Spermiogenesis
process by which haploid round spermatids complete an extraordinary series of events to become streamlined spermatozoa capable of motilit
What are males with Kleinfelters at risk for?
osteoporosis, DM, low muscle mass, thromboembolic events, male breast cancer
What percentage of men with NOA have abnormal karyotype?
10-15%
What percentage of men with oligospermia have abnormal karyotype?
5% versus only 1% with normal sperm count
Average testicle volume
15-25 cc
Semen fructose testing
The procedure for determining the amount of fructose in semen involves heating semen in a strong acid in the presence of resorcinol. Fructose gives a red color (Selivonoff reaction) and may be read in a photometer. The normal average is 315mg/dL fructose.
When to repeat SA if abnormal and suspect due to acute illness
4 weeks