Exam 12: Sex Hormones and Gonadotropins Flashcards
2 Estrogen Oral Contraceptives
Ethynyl Estradiol
Estradiol valerate
5 Progestin Oral Contraceptives
Levonorgestrel Desogestrel Norgestimate Drospirenone Norethindrone
What type of oral contraception is useful in that it does NOT interfere with lactation?
Progestins
Oral contraceptive most associated with weight gain
Medroxyprogesterone
Drug in Plan B
Levonorgestrel
Problem with Original Oral Contraception
Large doses
More side effects
Classic oral contraceptive cycle
21 days of Oral contraceptives followed by 7 days of inert pills or ferrous fumurate
Multiphase Combined Oral Contraceptives
Mimic normal hormonal events of the menstrual cycle
Allows inhibition of ovulation with decreased overall exposure to the synthetic hormones (lower doses)
Drug used in four-phasic oral contraceptives
Estradiol valerate
2 choices for starting date of oral contraceptive
First day of menses for more rapid contraception
First Sunday after menses (make sure they use backup contraception for 7 days)
Most prominent estrogen type produced in the ovary
Estradiol
Primary synthetic estrogen used in oral contraceptives
Ethanyl estradiol
Enterohepatic recirculation of oral contraceptives
- Conjugated to sulfate or glucuronide in the liver
- Secreted into the intestine via biliary tract
- Bacteria cleaves conjugate, allowing reabsorption
2 Progestins that are less androgenic than others
Norgestimate
Desogestrel
Yaz combo, uses
Ethanyl estradiol and Drospirenone
Birth control, also indicated for acne
Most common side effects of combined oral contraceptives
Nausea
Take with dinner or at bedtime
Dermatological side effects of combined oral contraceptives
- Chloasma (brown pigmentation, especially on the face)
Avoid UV light - Acne
- Hirsutism
CV side effects of combined oral contraceptives
HTN
MI and stroke, especially in smokers
Serious risk of combined oral contraceptives
Thromboembolic disorders
Estrogen is implicated in increased clotting factors and decreased antithrombin III
Desogestrel side effect
FDA review indicated that it increased risk of nonfatal venous thrombosis
Hepatobilliary side effects of Combined oral contraceptives
Gallstones (not much anymore with lower doses)
Benign hepatocellular adenoma
Metabolic side effects of oral contraceptives
decreased glucose tolerance
may increase LDL and triglycerides
GU side effects of oral contraceptives
Breakthrough bleeding/spotting
Infection associated with combined oral contraceptives
Candida vaginitis
CNS side effects of oral contraceptives
depression
migraines
Ocular side effects of combined oral contraceptives
Worsening of myopia/nearsightedness