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Infertility and Its Causes
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A uterus capable of developing and sustaining the conceptus to maturity. Temperature charting is a useful way of providing early clues about anovulation, and can help gynaecologists in their diagnosis. About 25% of all infertility is caused by a sperm defect and 40-50% of infertility cases have a sperm defect as the main cause, or a contributing cause. 18 If the semen analysis result is abnormal, further evaluation is indicated (Table 36–8,10,19,20). Once confirmed, the male partner is referred to a reproductive urologist, especially if the abnormality is severe.
Diverse Spermatogenic Defects in Humans Caused by Y Chromosome Deletions Encompassing a Novel RNA-binding Protein Gene. (PDF, 2 MB) Human Reproduction, 1996. Many countries have special frameworks for dealing with the ethical and social issues around fertility treatment. Spermatid Conception. (PDF, 1 MB) Human Reproduction, 1998. IUI is more commonly done when the man has a low sperm count, decreased sperm motility, or when infertility does not have an identifiable cause.
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Blockage of the ejaculatory duct: Sperm can be extracted directly from the testicles and injected into an egg in the laboratory. Ovary Transplantation for Fertility Preservation in Cancer Patients: Fresh and Frozen. (PDF, 1 MB) Chapter 42 from textbook Clinial Infertility, 2010.
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Low progesterone levels may lead to early miscarriage. Tubal occlusion is a cause of infertility because an ovulated egg is unable to be fertilized by sperm or to reach the endometrial cavity. If the correction is not done, it may be harder for the sperm to get to the female's cervix. Consulting a nutritionist, for example, could help a young woman suffering from anorexia to put on some weight, which might restart her menstrual cycle. This test is usually performed in a radiology facility About 25% of all infertility is due to a tubal factor Laparoscopy This is a surgical procedure and should not be performed until the basic testing has been done on both partners.
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A pregnancy where the mother is weak could pose a risk to the baby’s and mother’s health. Endometriosis is usually more common in women in their mid-twenties and older, especially when postponed childbirth has taken place.[55] Another major cause of infertility in women may be the inability to ovulate. The easiest and most successful treatment is intrauterine insemination (IUI). [104] Similar treatments apply when oligospermia, hypospermia, and ejaculatory disorders such as impotence, hypospadias, or retrograde ejaculation are present. [105, 106, 107] Patients with azoospermia that is not amenable to in vitro fertilization/intracytoplasmic sperm injection treatment benefit from artificial insemination (AI) with donor sperm. [108] Artificial insemination can be performed by depositing the sperm at the cervical level (cervical insemination) [106] or inside the endometrial cavity (intrauterine insemination). Group II: hypothalamic-pituitary-ovarian dysfunction (predominately polycystic ovary syndrome). Human menopausal gonadotropins Crowe discovered that the gonads were under the control of the anterior hypophysis. [175] Zondek and Aschheim discovered that FSH and LH were responsible for the development of the gonads in immature animals and confirmed Crowe's work. [135, 136] In the 1930s, ovulation induction was attempted by using gonadotropins from a mare, but its use was discontinued because of the development of antibodies. [176, 177] Borth et al demonstrated the effect of FSH and LH extracted from menopausal urine. [178, 179] Gemzell reported the first ovulation induction using human pituitary gonadotropin in 1958, and the first pregnancy was reported in 1960. [180, 181] Lunenfeld reported preliminary results using hMG; however, in 1963, it was definitely established as a real ovulation induction agent. [182, 183, 184] Human menopausal gonadotropin (hMG [eg, Repronex, Menopur]) contains 75 U of FSH and 75 U of LH per mL, although the concentration may vary among batches (ranges from FSH at 60-90 U and LH at 60-120 U). The Disappearing Y Chromosome – “I Told You So!” (PDF, 266 KB) Human Reproduction, 1997. The incidence of congenital malformation in IVF babies ranges between 2% and 3% worldwide and is similar to that in babies conceived naturally [45]. The feelings experienced by the infertile couples include depression, grief, guilt, shame, and inadequacy with social isolation. A woman comes to your consultation-hour and you diagnose an ovarian hyperstimulation syndrome. Effectiveness of the postcoital test: randomised controlled trial. A karyotype test and a Y chromosome test for microdeletions are indicated in patients with nonobstructive azoospermia or severe oligospermia (< 5 million sperm/mL), although indications are expanding.[20] Klinefelter syndrome Klinefelter syndrome is the most common chromosomal cause of male infertility, estimated to be present in 1 per 500-1000 male births. Down syndrome These patients have mild testicular dysfunction with varying degrees of reduction in germ cell number. 8 Involvement in group counseling and exercise is more effective than weight loss advice alone. Evaluation should be pursued by 6 months of attempted pregnancy in women with a known history of these abnormalities or a history of bleeding between menstrual cycles. Editorial: The Cure and Proliferation of Male Infertility. (PDF, 2 MB) The Journal of Urology, 1998. This was set up on 1 August 1991 following a detailed commission of enquiry led by Mary Warnock in the 1980s A similar model to the HFEA has been adopted by the rest of the countries in the European Union.
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See also
Infertility Treatment Linked With Slightly Higher Risk of Pregnancy Complications
Infertility Support Groups Ottawa
Infertility Specialist Vermont