What is Late Onset Congenital Adrenal Hyperplasia?
1. Adult women with anovulation and hirsutism
2. Due to genetic defects in CYP21 enzyme
3. Prevalent amongst Ashkenazi Jews, Hispanics
4. Screen with a fasting 17-OHP level (<2 is normal)--(High levels of 17-OHP should prompt an ACTH stimulation test)
100
What is the first-line treatment for ovulation induction in PCOS women trying to conceive?
Clomiphene citrate
2nd line is exogenous gonadotropins, used if clomiphene fails
100
1) What NOT to order as a work-up for PCOS:
LH
FSH
Estradiol
OGTT
Fasting Insulin
Lipid panel
Testosterone
Dexamethasone challenge test
Estradiol
Dexamethasone challenge test
100
List the disorders one needs to rule out to diagnose PCOS?
True or False: LH regulates aromatase activity in granulosa cells, FSH regulates androgen synthesis in theca cells?
False.
LH --> theca cells
FSH --> granulosa cells
200
What are some of the effects of weight loss on PCOS patients?
1. ↓ circulating androgen levels due to ↑ SHBG, causing resumption of menses
2. Improved pregnancy rates
3. ↓ hirsutism
4. Improved glucose and lipid levels
5. Weight loss agents (e.g. Orlistat, which inhibits lipid absorption in intestine) noted to show similar improvement in ovarian fxn
6. Gastric bypass surgery helps restore normal ovarian function
7. Weight loss effects in normal weight women with PCOS unknown
200
What risks are associated with clomiphene citrate?
Who warrants screening for cardiovascular disease? What tests and how frequently? How do you decrease the risk?
1. All PCOS patients
2. Screen BMI, fasting lipid and lipoprotein levels, metabolic syndrome
3. Screen periodically because 20% of PCOS women convert to impaired glucose tolerance per year
4. Exercise and weight control
5. Studies show an increased prevalence of subclinical atherosclerosis compared to controls
300
True or false, ovarian drilling is a recommended treatment for PCOS?
False. Benefits undetermined, long term effects unclear.
How do aromatase inhibitors work to induce ovulation in PCOS?
Prevent conversion of testosterone to estrogen.
The testosterone build up causes increase of gonadotropin release to stimulate ovulation
500
What are the Rotterdam Criteria (2003) for diagnosing PCOS?
1. Hyperandrogenism
2. Oligomenorrhea or amenorrhea
3. Polycystic ovaries by ultrasound diagnosis
(Must have 2 out of 3 for diagnosis)
500
What is the theorized mechanism of insulin resistance on hyperandrogenism in PCOS?
Hyperinsulinemia may result in decreased levels of sex-hormone binding globulin causing increased circulating androgen as well as stimulation of androgen production in the adrenal glands and ovaries
500
What complications of pregnancy are associated with maternal PCOS?
Gestational diabetes, pre-eclampsia and chronic hypertension