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Related Concept Videos

Birth Control Methods01:22

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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...
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The enteral drug administration involves three primary routes: oral, sublingual, and buccal. Oral ingestion is the most prevalent, safe, economical, and convenient method for drug administration. However, it has certain drawbacks, including limited absorption due to the drug's low water solubility or poor membrane permeability, possible emesis from GI mucosa irritation, destruction of drugs by digestive enzymes or low gastric pH, and irregular absorption along with food or other drugs.
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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...
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Infertility in Females01:28

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Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
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Meiosis II is the second and final stage of meiosis. It relies on the haploid cells produced during meiosis I, each of which contain only 23 chromosomes—one from each homologous initial pair. Importantly, each chromosome in these cells is composed of two joined copies, and when these cells enter meiosis II, the goal is to separate such sister chromatids using the same microtubule-based network employed in other division processes. The result of meiosis II is two haploid cells, each...
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The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
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Related Experiment Video

Updated: Jul 11, 2025

Author Spotlight: Evaluating the Impact of Immediate Partial Removal of Cumulus-Oocyte Complexes on Fertilization Efficiency and Embryo Quality
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Author Spotlight: Evaluating the Impact of Immediate Partial Removal of Cumulus-Oocyte Complexes on Fertilization Efficiency and Embryo Quality

Published on: October 18, 2024

446

[Emergency contraception.]

Lotti Lőczi1, Márton Vezér1, Marianna Török1

  • 11 Semmelweis Egyetem, Általános Orvostudományi Kar, Szülészeti és Nőgyógyászati Klinika Budapest, Üllői út 78/a, 1082 Magyarország.

Orvosi Hetilap
|November 6, 2023
PubMed
Summary

This review guides healthcare professionals in selecting emergency contraception (EC) methods, including oral levonorgestrel, ulipristal acetate, and IUDs, based on effectiveness and patient factors to reduce unintended pregnancies.

Keywords:
emergency contraceptionepidemiological factorsepidemiológiai faktorokesemény utáni fogamzásgátlásnem kívánt terhességunintended pregnancy

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Area of Science:

  • Reproductive Health
  • Pharmacology
  • Evidence-Based Medicine

Background:

  • Emergency contraception (EC) is crucial for preventing unintended pregnancies, with various methods offering different efficacy and timelines.
  • Understanding target populations and evidence-based EC methods is vital for healthcare professionals and policymakers.

Approach:

  • A systematic literature search was conducted across major databases (PubMed, Embase, Scopus) for publications from 1960 to 2023.
  • 23 clinical publications evaluating oral and long-term contraceptives for EC use were selected.

Key Points:

  • EC effectiveness is influenced by patient weight, breastfeeding status, time since intercourse, and future contraceptive intentions.
  • The review analyzes oral levonorgestrel, ulipristal acetate, and intrauterine devices (IUDs) as EC options.

Conclusions:

  • This systematic review aids in choosing appropriate EC methods in Hungary, considering effectiveness, target population, and accessibility.
  • Updated professional guidelines are recommended to improve EC availability and enhance reproductive health outcomes.