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Related Concept Videos

Birth Control Methods01:22

Birth Control Methods

Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although vasectomy...
Ovarian Cycle01:27

Ovarian Cycle

The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...
The Placebo Effect01:54

The Placebo Effect

The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
Secretory Phase01:19

Secretory Phase

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Gonadal and Placental Hormones01:24

Gonadal and Placental Hormones

The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
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Related Experiment Video

Updated: Jun 13, 2026

Monitoring Blood Glucose in Mouse Offspring After Intracytoplasmic Sperm Injection
06:11

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Published on: May 17, 2024

The morning after pill.

D Barr

    Canadian Family Physician Medecin De Famille Canadien
    |May 15, 2010
    PubMed
    Summary

    Diethylstilboestrol, a medication, effectively prevents pregnancy when taken within 48 hours after unprotected intercourse. This emergency contraception method is suitable for women who miss contraceptive doses.

    Area of Science:

    • Reproductive Health
    • Pharmacology
    • Emergency Contraception

    Background:

    • Unprotected intercourse poses a risk of unintended pregnancy.
    • Timely intervention is crucial for effective emergency contraception.

    Purpose of the Study:

    • To evaluate the efficacy of Diethylstilboestrol for preventing pregnancy post-unprotected intercourse.
    • To assess its applicability in women with contraceptive adherence issues.

    Main Methods:

    • Administration of Diethylstilboestrol 5 mg, three times daily for 5 days.
    • Inclusion of women of child-bearing age presenting within 48 hours of unprotected intercourse.

    Main Results:

    • Diethylstilboestrol demonstrated effectiveness in preventing pregnancy in the studied group.

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  • The treatment was successful in a small series of women.

    • Conclusions:

    • Diethylstilboestrol is an effective emergency contraceptive option.
    • This regimen can be considered for women who miss contraceptive doses, preventing unintended pregnancies.