CONTRACEPTION Flashcards
1. Know the various types of contraceptive agents including indications and contraindications, mechanisms of action, and efficacy. 2. Know benefits, risks, and contraindications for the combination oral contraceptive pill. 3. Know about intrauterine devices. 4. Know about emergency contraception.
What are three main factors to consider when choosing a form of contraception?
-Has the pt had any DVTs/thromboembolic events or is a smoker?
-Can the pt remember to take something everyday for protection?
-Does the pt want to be able to have unprotected sex (important to know for barrier protection)?
Tell me, what are the progestin only containing contraception options?
Progestin only pill, Levonorgestrel IUD (LNG-IUD), Nexplanon, and DMPA (progestin only injection every 3 months - not as effective as other progestin only).
What does progestin do to the uterus?
Progesterone thins out the uterine lining, so there is less menstrual bleeding when it comes down to it.
A female patient comes to my office wanting to discuss the forms of contraception. She is 37 and smokes. She has heavy periods, producing quarter-sized clots during the first four days of menses. She randomly unprotected sex with 2 different male partners. She cannot remember to take a pill everyday. She’s asking what is the best form of contraception. Explain your reasoning.
-Since she has unprotected sex, barrier contraception is not a good option.
-She is over 35 and smokes, so any contraception with a combination of both estrogen and progesterone is super contraindicated.
-She has heavy menses, so progetin containing contraception can help to reduce the intensity of bleeding and also the frequency.
-She can’t remember to take a pill daily, so that rules out progestin only pills. This leaves a progesterone containing IUD (LNG-IUD) and subdermal implant (NEXPLANON) and DMPA as the best options.
What are the contraceptive options that contain a combination of estrogen and progesterone?
combined OCPs, estrogen patch, and a ring (NUVA ring).
What is typical use effectiveness when it comes to contraception?
The efficacy of the contraceptive when it is not properly used or forgotten.
What is perfect use effectiveness when it comes to contraception?
The efficacy of the contraceptive when it is used right and not forgotten.
What are some options for emergency contraception?
-Yuzpe regimen - take two pills (estrogen only and progestin only) together immediately after sex and then again 12 hours after.
-Take Levonorgestrel 0.75 mg pill once immediately after sex and then again 12 hours after (PLAN B) within 3 days of the unprotected sex.
-Take 1.5 mg LNG pill once immediately after sex (PLAN B one step).
-Ulipristal (ELLA) -one dose of a progestin receptor modulator.
-Copper IUD within 5 days of sex.
What is the efficacy of most emergency contraception?
What is the exception?
75%.
Copper IUD is the exception, with an efficacy of 99%,
*making the COPPER IUD the best emergency contraceptive out there.
Aside from reducing bleeding by thinning out the endometrium, what does progestin do to ensure contraception?
Progestin works by preventing ovulation and increasing the cervical mucus plug thickness.
What does estrogen do in terms of contraception?
Estrogen is useless for contraception on its own. It must be given with progestin. However, it causes the endometrium to be stable and firm, not bleeding. Estrogen also prevents the follicular phase (prevents ovaries from having mature follicles that are ready for ovulation).
When you start progestin only contraceptives, why is there initially increased bleeding in some pts?
Because progestin thins out the endometrium, so if their endometrium is thick already, it must shed and bleed to thin out. However, after that, the thinned out layer won’t bleed as much as before.
What are the most common side effects of oral contraceptives (progestin only or estrogen and progesterone combination)?
Nausea and vomiting and fluid retention and breast soreness and mild increase in bp.
What are the main risks of taking estrogen?
Estrogen can cause increased risk of DVT in all women, strokes in women with migraines w/ aura, and MIs in women who smoke and are over 35-years-old.
What are the benefits of any type of oral contraception?
-Help to reduce bleeding from menses.
-Helps to relieve painful periods (dysmenorrhea) in adenomyosis or endometriosis or in endometriosis.
-Reduces the risk of ovarian cancer, endometrial cancer, and colon cancer.