Artificial insemination

Artificial insemination (AI) is a medical technique commonly used for treating infertility. It involves the direct insertion of sperm into a woman's cervix, fallopian tubes, or uterus, bypassing the natural method of sperm delivery via sexual intercourse or natural insemination.

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Blausen 0058 Artificial Insemination

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Intrauterine Insemination

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Instruments 1936

== History ==

The procedure has a long history, with recorded instances as early as the 18th century for animal breeding. In humans, the first successful AI procedure was reported in the late 19th century.

Techniques

• AI encompasses a range of methods, including:
• Intrauterine Insemination (IUI): The most common AI procedure, IUI involves injecting specially washed sperm directly into the uterus. This method is often coupled with fertility drugs to enhance the probability of conception.
• Intracervical Insemination (ICI): This method involves inserting sperm into the cervix. It is less common than IUI due to lower success rates.
• Intratubal Insemination (ITI): This involves placing sperm into the woman's fallopian tubes and is more invasive than the other methods.

Procedure

AI in humans can utilize sperm from either the woman's partner (Artificial Insemination by Husband, AIH) or a donor (Artificial Insemination by Donor, AID). A previously prevalent method, AIC, combined the sperm of both the husband and a donor. This ensured ambiguity regarding the child's paternity, a crucial aspect during times when AI was regarded as immoral. However, its significance diminished as societal acceptance of AI grew.

To optimize conception chances, the woman's menstrual cycle is monitored. Upon ovulation, donor sperm, which has undergone a "washing" process to enhance fertilization chances and eliminate discomfort-causing chemicals, is introduced. This process also selects the most active sperm. While less common, some cases require intrauterine insemination where semen is injected directly into the uterus.

Indications and Uses

AI can be a preferred option for couples facing infertility issues, including low sperm count or poor sperm mobility in men, and cervical mucus issues in women. It is also used by single women and lesbian couples wishing to conceive. Furthermore, AI is a common practice in animal husbandry, particularly in dairy farming and canine breeding.

Risks and Considerations

While generally considered safe, AI can occasionally lead to mild cramping and bleeding. In cases where fertility drugs are used, there's a heightened risk of multiple pregnancies. As with all medical procedures, success rates vary based on numerous factors, including age, sperm quality, and the presence of any underlying fertility issues.

Prevalence in Agriculture

AI's application is extensive in contemporary agriculture. Approximately 75% of dairy cattle and up to 85% of swine are bred using this method. Its cost-effective nature allows breeders to mate their livestock with males possessing sought-after traits.

Ethical and Legal Aspects

The use of AI, particularly with donor sperm, raises ethical and legal questions around parental rights, donor anonymity, and the child's right to know their genetic history. Legislation and cultural norms regarding these issues vary widely worldwide.

See Also

• Test tube baby
• Artificial fertilization