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Is Natural IVF Cycle Better Than Standard IVF Cycle?
There are many infertile couples who are perplexed about whether to opt for natural cycle IVF or standard (also known as stimulated) cycle IVF. In natural cycle IVF, medications are not used to stimulate the female’s ovaries to produce multiple eggs. The one egg a woman releases during her normal monthly cycle is collected and fertilized. However, other IVF steps are required. Injections to trigger ovulation, surgical egg retrieval and culturing of the embryo in the lab remain part of the natural cycle IVF process.
- Some couples choose natural cycle IVF due to lower costs and avoiding medication to stimulate ovaries.
- Natural cycle IVF may be less successful compared to standard or stimulated cycle IVF.
- Clinics like Shady Grove Fertility caution against natural cycle IVF due to its lower success rates.
- USC Fertility researchers highlight the benefits of natural cycle IVF for poor responders or couples with male factor infertility.
- The choice between natural and standard cycle IVF should be guided by a fertility specialist, considering individual factors and treatment goals.
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Get A Second OpinionWhat is the Natural IVF Cycle?
A Natural IVF (in vitro fertilization) Cycle refers to an IVF process in which the treatment is based on the woman's natural menstrual cycle without the use of hormone-stimulating medications to induce ovulation.
Here's how it typically works:
- Natural Cycle Monitoring: The cycle is closely monitored to determine the timing of ovulation.
- Egg Retrieval: When a natural egg is ready for retrieval, it's collected from the ovary.
- Fertilization: The retrieved egg is fertilized with sperm in the lab.
- Embryo Transfer: The resulting embryo is then transferred into the uterus.
The key difference from traditional IVF is that Natural IVF uses the body's natural ovulation cycle rather than stimulating the ovaries to produce multiple eggs. This can reduce the risk of ovarian hyperstimulation syndrome (OHSS) and may be a good option for women who want to avoid the side effects of hormonal medications.
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Book an AppointmentWhat is the Standard IVF Cycle?
The Standard IVF (In Vitro Fertilization) Cycle typically involves several key steps:
- Ovarian Stimulation: Hormonal medications are used to stimulate the ovaries to produce multiple eggs. This usually involves injections of follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
- Monitoring: Regular blood tests and ultrasounds are conducted to monitor the ovaries' response and adjust medication dosages if necessary.
- Egg Retrieval (Aspiration): Once the eggs are mature, they are retrieved from the ovaries using a needle inserted through the vaginal wall, typically guided by ultrasound.
- Fertilization: The retrieved eggs are mixed with sperm in a laboratory dish to facilitate fertilization. In some cases, intracytoplasmic sperm injection (ICSI) is used, where a single sperm is injected directly into an egg.
- Embryo Culture: The fertilized eggs (embryos) are cultured for several days (usually 3 to 5) to allow them to develop.
- Embryo Transfer: One or more embryos are selected and transferred into the uterus. This is typically a relatively simple procedure that doesn’t require anaesthesia.
- Pregnancy Test: About 10-14 days after the embryo transfer, a blood test is done to determine whether implantation has occurred and whether pregnancy has been achieved.
This is a general outline, and individual protocols may vary based on specific medical needs and clinic practices.
Conclusion
The Standard IVF Cycle involves stimulating the ovaries to produce eggs, retrieving those eggs, fertilizing them in the lab, culturing the embryos, transferring one or more embryos into the uterus, and then performing a pregnancy test to check for successful implantation.
Frequently Asked Questions
Natural IVF uses the woman's natural menstrual cycle without stimulating egg production, while Standard IVF uses medications to produce multiple eggs.
Natural IVF may be considered safer for some women because it involves fewer medications and fewer risks associated with ovarian hyperstimulation syndrome (OHSS).
Success rates can vary, but Standard IVF often has higher success rates because it retrieves multiple eggs, increasing the chances of successful fertilization and implantation.
Yes, Natural IVF may be an option for women with low ovarian reserve who produce fewer eggs even with fertility medications.
Yes, couples can discuss with their fertility specialist to choose the type of IVF cycle that best suits their needs and medical situation.
Risks can include multiple pregnancy, ovarian hyperstimulation syndrome (OHSS) with Standard IVF, and the possibility of cycle cancellation with Natural IVF if no eggs are produced.
Both Natural and Standard IVF cycles usually take several weeks to complete, including monitoring, egg retrieval, fertilization, and embryo transfer.
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