How does estrogen work in COC pills?

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OB Quizlet on Contraception Abortion and Womens Health Questions

Question 1 of 5

How does estrogen work in COC pills?

Correct Answer: A

Rationale: Estrogen in combined oral contraceptive (COC) pills works primarily by inhibiting ovulation through the suppression of the luteinizing hormone (LH) surge. By maintaining consistent levels of estrogen in the body, COC pills prevent the release of eggs from the ovary. This prevents fertilization from occurring, which is one of the main mechanisms of action of COC pills to provide contraception. While estrogen also has other effects such as stabilizing the endometrium to reduce unscheduled bleeding, its main role in COC pills is to inhibit ovulation and prevent pregnancy through hormonal regulation.

Question 2 of 5

The patient asks the nurse when her Nexplanon can be inserted. How does the nurse respond?

Correct Answer: A

Rationale: The nurse would respond with option A, "after the delivery of your placenta." Nexplanon is a hormonal contraceptive implant that is typically inserted in the upper arm subdermally. It is recommended to wait until after the delivery of the placenta to reduce the risk of causing any harm to the fetus during pregnancy or labor. Inserting Nexplanon during labor or delivery is not recommended due to the potential risks involved.

Question 3 of 5

What is the LNG-IUC mechanism of action?

Correct Answer: D

Rationale: The LNG-IUC, or levonorgestrel-releasing intrauterine system, works primarily by thickening the cervical mucus, which inhibits the passage of sperm through the cervix. This mechanism reduces the likelihood of fertilization occurring. Additionally, LNG-IUC also causes atrophic changes in the endometrium, which makes it less conducive for implantation of a fertilized egg, further decreasing the chance of pregnancy.

Question 4 of 5

What education does the nurse provide to a person taking Ella for emergency contraception?

Correct Answer: D

Rationale: The education the nurse should provide to a person taking Ella for emergency contraception is to restart their COCs the next day and use a backup method, such as condoms, for 7 days. This is important to ensure continued protection against pregnancy, as Ella may potentially reduce the effectiveness of the COCs. Using a backup method during this time is essential to prevent unintended pregnancy.

Question 5 of 5

What emergency contraception has the best efficacy for prevention of pregnancy?

Correct Answer: C

Rationale: Copper intrauterine devices (IUDs) have the best efficacy for prevention of pregnancy among emergency contraception options. Copper IUDs are over 99% effective when used as emergency contraception, making them more reliable than other methods like Plan B, Yuzpe, or progesterone-only EC. This high efficacy is due to the mechanism of action of copper IUDs, which prevent fertilization and implantation of the fertilized egg. Additionally, once inserted, a copper IUD can continue to provide ongoing contraception for up to 10 years, making it a long-term contraceptive option as well.

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