Female Reproductive System Drugs Flashcards
What are the two hormones of the female reproductive system?
Estrogen and progesterone
What secretes estrogen?
Ovaries
What are three types of estrogen?
Estradiol, estrone, and estriol
What are the effects of estrogen?
- maturation of reproductive organs
- development of secondary sex characteristics
- thickening of endometrium
- decreed LDL, increased HDL in the blood
- lengthening of bones, increased bone density
What secretes progesterone?
The corpus luteum within the ovaries
What is the corpus luteum?
The corpus luteum is a mass of cells found in the ovaries that secretes progesterone to prepare the body for pregnancy.
What are the effects of progesterone?
- breast maturation during growth and development
- thickening and stabilization of endometrium in preparation for implantation
- maturation of milk-producing ducts during pregnancy
What were the methods of birth control prior to the 1960’s?
- total abstinence
- rhythm or calendar method
- coitus interruptus
What is coitus interruptus?
“pull-out method”
What factors influence birth control decisions?
Effectiveness, adverse effects and safety, age, frequency of intercourse, ease of use, ability to adhere to required regimen, preexisting medical conditions, cultural or religious beliefs.
What does sterilization mean?
Permanent method for birth control.
What is female sterilization called?
Tubal ligation
What is male sterilization called?
Vasectomy
What is the injection form of birth control called?
Depo-Provera
What is the most effective oral contraceptive?
A combination of low-dose estrogens and progestins.
How effective are combination oral contraceptives?
90% when taken daily
Which population is best for taking combination oral contraceptives?
Healthy women with no contraindications
Do combination oral contraceptives leave any long-lasting effects?
No
Are combination oral contraceptives initiated at the lowest or highest effective dose?
Lowest
What day of the menstrual cycle do combination oral contraceptives start?
Day 5
How long do combination oral contraceptives continue for?
21 days
What type of pills are given on the other 7 days of the month when taking combination oral contraceptives?
Placebo pills
What do combination oral contraceptive supress?
Luteinizing hormone (LH) and follicle stimulating hormone (FSH)
What does luteinizing hormone do?
Helps control the menstrual cycle and triggers the release of an egg from the ovary.
What does follicle-stimulating hormone do?
Helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.
What happens without the secretion of LH and FSH
The follicle cannot mature and therefore ovulation is prevented.
What are two secondary benefits of combination oral contraceptives?
- Less painful menstruation
2. Better regulated menstrual flow
Name a combination oral contraceptive:
Ortho-Novum
What is Ortho-Novum used for?
- preventing pregnancy
- endometriosis
- dysfunctional uterine bleeding
How do Ortho-Novum work?
It inhibits ovulation
What are some of the side effects of Ortho-Novum?
- nausea, breast tenderness, weight gain, breakthrough bleeding, edema, gallbladder disease, nausea, abdominal cramps, breast fullness, fatigue, skin rash, headache, photosensitivity, thromboembolic disorders, abnormal uterine bleeding, and + plasma glucose
What does cigarette smoking do when you are taking Ortho-Novum?
It increases the risk of serious cardiovascular adverse effects.
When should you not combined oral contraceptives?
Breast cancer, smoking, pregnant, sever liver disease, major surgery w prolonged immobilization, migraines (w aura), and impaired cardiac function.
What are some of the drug interactions when taking Ortho-Novum?
- anticonvulsants
- antibiotics
- Warfarin
- Heparin
- Insulin
- oral antidiabetic drugs
When are progestin-only oral contraceptives mainly taken?
When estrogen is contraindicated.
What’s another name for progestin-only contraceptives?
Minipills
Are Progestin-only oral contraceptives more or less effective at preventing ovulation?
Less effective
How do progestin-only oral contraceptives work?
They cause thick, viscous cervical mucous at the entrance to the uterus which discourages sperm penetration and inhibits the implantation of fertilize egg.
Are there placebo pills in progestin-only contraceptives?
No
What is a disadvantage of progestin-only contraceptives?
There is a higher incidence of irregular menstrual cycles including prolonged bleeding and breakthrough spotting.
Is there a risk for thromboembolic events or breast cancer with progestin-only contraceptives?
No
What is another birth control method?
Long-Acting Reversible Contraceptives
What are some examples of long-acting reversible contraceptives?
- transdermal patches
- vaginal ring
- depot injection methods
- intrauterine devices
Name a Transdermal delivery method of long-acting contraceptives:
Ortho-Evra
What is a side effect of the patch?
Increased risk of venous thromboembolism
Who should not use the patch?
Women with a history of blood clots
Name a vaginal ring method of long-acting contraceptives:
NuvaRing
How long does the vaginal ring provide contraceptive protection for?
3 weeks
Name a depot injection method?
Depot-Provera
What is another name for the Depot-Provera injection?
Medroxyprogesterone
How long does the Depot-Provera injection last for?
3 months
Name hormonal IUD:
Mirena
Name 2 methods of emergency contraception:
- Plan B
2. Plan B One Step
When is Plan B most effective?
Within 72 hours after unprotected intercourse
When is Plan B One Step most effective?
Within 120 hours after unprotected intercourse
What does emergency contraception do?
Prevents ovulation
Does emergency contraception cause an abortion?
No
At what age can you purchase emergency contraception?
Any age
What is pharmacologic abortion?
The removal of an embryo by use of drugs after implantation occurs?
What are drugs called that induce abortion?
Abortifacients
Do abortifacients need to be taken under close supervision of a healthcare provider?
Yes
Name 4 abortifacients:
- Mifepristone
- Misoprostol
- Methotrexate
- Prostaglandins
How do prostaglandins work as abortifacients?
They cause contraction of smooth muscle therefore inducing labour.
How many days of gestation does the fetus have to be to terminate with Mifepristone?
70 days or less
How does Mifepristone work?
It is a progesterone antagonist meaning it blocks the effects of progesterone on the uterine lining (doesn’t allow it to grow and be a healthy spot for the fetus).
What are some side effects of Mifepristone?
- nausea
- headache
- dizziness
- vomiting
- fatigue
- abdominal pain or cramping
- vaginal bleeding and cramping for 16 days
What are some of the worse side effects of Mifepristone?
- serious and sometimes fatal infections
- prolonged heavy bleeding
- rare cases of septic shock
What are the contraindications of Mifepristone?
- ectopic pregnancy
- anticoagulant therapy
- patient w IUD in place should have it removed first
What are drugs called that induce labour?
Oxytocics (named after the hormone that induces labour)
Name a oxytocic drug
Pitocin
How do oxytocic drugs work:
They affect neuroreceptor site to stimulate the contraction of the uterus.
What is another indication of oxytocic drugs?
To prevent and treat uterine atony (loss of tone) after delivery.