Emergency Contraceptives
Understanding methods used to prevent pregnancy after unprotected intercourse, typically within 72 hours.
What is Emergency Contraceptives?
A method used to prevent pregnancy after unprotected sexual intercourse or contraceptive failure.
Key points
- Define emergency contraception and its purpose.
- Identify the different types of emergency contraceptives.
- Explain the mechanism of action for each type.
- State the time window for effectiveness of each method.
Common exam trap
Delaying use beyond the recommended time window (72 or 120 hours).
Definitions
- Term
Emergency Contraception (EC)
- Meaning
A method used to prevent pregnancy after unprotected sexual intercourse or contraceptive failure.
- Term
Ovulation
- Meaning
The release of an egg from the ovary, typically occurring around the middle of the menstrual cycle.
- Term
Fertilization
- Meaning
The fusion of a sperm and an egg to form a zygote, usually occurring in the fallopian tube.
- Term
Abortifacient
- Meaning
A substance or agent that causes abortion.
Learning objectives
Define emergency contraception and its purpose.
Identify the different types of emergency contraceptives.
Explain the mechanism of action for each type.
State the time window for effectiveness of each method.
Differentiate EC from abortion.
Recognize the importance of timely use and limitations (e.g., STI protection).
Prerequisites
Understanding of the female reproductive cycle (ovulation, fertilization).
Knowledge of basic contraceptive methods and their failure rates.
Awareness of hormonal regulation in the menstrual cycle.
Common mistakes
Delaying use beyond the recommended time window (72 or 120 hours).
Using EC as a regular contraceptive method.
Believing EC causes abortion.
Not considering the Copper-T IUD as a highly effective EC option.
Forgetting that EC does not offer STI protection.
Keywords
Emergency Contraception
Unprotected Sex
Contraceptive Failure
Levonorgestrel
Ulipristal Acetate
Copper-T IUD
Ovulation
Fertilization
Reproductive Health
Unintended Pregnancy
Practice preview
A 22-year-old woman presents to a clinic 4 days after unprotected sexual intercourse. She is concerned about pregnancy. Which of the following is the most appropriate emergency contraceptive option for her, considering e…
medium
Which of the following is a common method of emergency contraception?…
easy
What is the primary mechanism of action of emergency contraceptive pills (ECPs) like Levonorgestrel?…
easy