Techniques used for IUI: is it time for a change?

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.