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Recurrent IVF failure is a much more broad term and includes all repeated failures to get pregnant from IVF. Repeated implantation failure specifically refers to those failures due to unsuccessful implanting to the uterus wall. [1] An unsuccessful implantation can result from problems with the mother or with the embryo.
On the other hand, in women who have had previous unsuccessful treatment, IVF achieves a live birth rate approximately 2–3 times greater than ovarian stimulation combined with IUI. [8] IUI and ICI has higher pregnancy rates when combined with ovarian stimulation in couples with unexplained infertility, for IUI being 13% unstimulated and 15% ...
Fertility problems affect one in seven couples in the UK. Most couples (about 84%) who have regular sexual intercourse (that is, every two to three days) and who do not use contraception get pregnant within a year. About 95 out of 100 couples who are trying to get pregnant do so within two years. [90] Women become less fertile as they get older.
IUI success rates depend on elements like sperm quality, timing of the procedure and age of the people involved, Wright says. However, success rates are usually quoted between 5% and 15% per cycle.
The average user reports 16 days of bleeding or spotting in the first month of use, but this diminishes to about four days at 12 months. [51] [52] Cramping and pain: many women feel discomfort or pain during and immediately after insertion. Some women may have cramping for the first 1–2 weeks after insertion. [53]
This method is commonly offered by fertility clinics using donor sperm because the increased pregnancy rate results in fewer donor samples being used for the same number of pregnancies. Semen used for IUI must first be 'washed' to provide a pure sperm sample: this prevents 'cramping' following the insemination.
They appear between day 19 and day 21 of gestational age, and are fully formed at day 20. [41] This corresponds to a fertilization age of approximately five to seven days, which corresponds well with the time of implantation. Pinopodes only persist for a maximum of two days, and are seen as the ultrastructural markers of receptivity. [46]
A heterotopic pregnancy is a complication of pregnancy in which both extrauterine pregnancy and intrauterine pregnancy occur simultaneously. [2] It may also be referred to as a combined ectopic pregnancy, multiple‑sited pregnancy, or coincident pregnancy. The most common site of the extrauterine pregnancy is the fallopian tube.