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In Vitro Fertilization01:24

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In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
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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...
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Techniques used for IUI: is it time for a change?

L Lemmens1, S Kos2, C Beijer3

  • 1Fertility Laboratory, Department of Obstetrics and Gynaecology, Radboud University Medical Center Nijmegen, PO Box 9101, 6500 HB Nijmegen, The Netherlands.

Human Reproduction (Oxford, England)
|September 1, 2017
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Summary

The World Health Organization (WHO) guidelines for intrauterine insemination (IUI) are generally suitable, but evidence is limited, and some technical aspects require updates for better standardization and outcomes in assisted reproduction.

Keywords:
IUIlaboratory guidelinepregnancy outcomesreviewsemen preparationtechnical aspects

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Area of Science:

  • Reproductive Medicine
  • Assisted Reproductive Technologies
  • Laboratory Science

Background:

  • Intrauterine insemination (IUI) is a common assisted reproductive technology.
  • Standardization of technical procedures is crucial for consistent pregnancy rates.
  • Current WHO (2010) guidelines for IUI may not fully align with the latest evidence.

Purpose of the Study:

  • To evaluate the current literature regarding the technical aspects of IUI.
  • To assess the adherence of WHO (2010) laboratory guidelines to contemporary scientific evidence.
  • To identify areas for improvement in IUI protocols to enhance standardization and outcomes.

Main Methods:

  • A comprehensive literature search was conducted in Medline and the Cochrane library.
  • The review focused on associations between pregnancy rates and various IUI procedures.
  • Parameters examined included semen collection, processing, insemination timing, and equipment used.

Main Results:

  • The literature review revealed a low level of evidence for most variables impacting IUI success.
  • A lack of consensus exists regarding optimal procedures, such as semen preparation techniques and timing.
  • Significant variation in methods and inclusion criteria were noted across studies, hindering standardization.

Conclusions:

  • While WHO guidelines provide a suitable framework, they require updates based on current literature.
  • There is a need for further research to establish evidence-based protocols for IUI.
  • Improved standardization of assisted reproduction technologies, including IUI, is essential for quality control and cost-effectiveness.