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The Relationship of Abnormal Semen Values to Pregnancy Outcome. (PDF, 770 KB) Chapter 10 from textbook, 1992. Cystic Fibrosis and Infertility Caused by Congenital Bilateral Absence of the Vas Deferens and Related Clinical Entities. (PDF, 2 MB) Human Reproduction, 1996. Male infertility tests: Going under the microscope Identifying the cause of a man's infertility is as much an art as a science. “The first step is an evaluation by a physician specializing in male infertility,” says Stephen Shaban, MD, a urologist specializing in male reproductive medicine and microsurgery in Raleigh, North Carolina.

This technique involves an injection of a single healthy sperm directly injected into mature egg. Seventy-five percent of patients have testicular atrophy and primary testicular failure due to degeneration of the seminiferous tubules. Broekmans FJ, Kwee J, Hendriks DJ, Mol BW, Lambalk CB.

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Ideally, the test should be performed at least twice to confirm results. Luttjeboer F, Harada T, Hughes E, Johnson N, Lilford R, Mol BW.

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It is in fact possible to restore ovulation using appropriate medication, and ovulation is successfully restored in approximately 90% of cases. A varicocele is a varicose vein found in the scrotum. Sermondade N, Faure C, Fezeu L, Lévy R, Czernichow S; Obesity-Fertility Collaborative Group. These pyramids are filled with the seminiferous tubules.

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Effectiveness of the postcoital test: randomised controlled trial. Polycystic ovarian syndrome (PCOS) is one of the most common disorders impacting ovulation. Hormonal Problems A small percentage of male infertility is caused by hormonal problems.  The hypothalamus-pituitary endocrine system regulates the chain of hormonal events that enables testes to produce and effectively disseminate sperm.  Several things can go wrong with the hypothalamus-pituitary endocrine system: · The brain can fail to release gonadotrophic-releasing hormone (GnRH) properly.  GnRH stimulates   the hormonal pathway that causes testosterone synthesis and sperm production.  A disruption in   GnRH release leads to a lack of testosterone and a cessation in sperm production. · The pituitary can fail to produce enough lutenizing hormone (LH) and follicle stimulating hormone   (FSH) to stimulate the testes and testosterone/sperm production.  LH and FSH are intermediates   in the hormonal pathway responsible for testosterone and sperm production. · The testes� Leydig cells may not produce testosterone in response to LH stimulation. · A male may produce other hormones and chemical compounds which interfere with the   sex-hormone balance. Women are advised not to use the drug for more than one day. 47 Motivational interviewing techniques for modifiable risk factors, such as obesity, tobacco, illicit drugs, and alcohol, can decrease the targeted risk factor. Environmental vs Genetic Sex Determination: A Possible Factor in Dinosaur Extinction? (PDF, 307 KB) Fertility and Sterility, 2004. The choices I found myself having to make in the years that followed, and the mounting agony of repeat in vitro fertilization (IVF) cycles, left me devastated. Fallopian tubes that are patent and will function to permit the sperm and ovum to meet and allow migration of the conceptus to the uterus. Oocyte Vitrification – Women’s Emancipation Set in Stone. (PDF, 70 KB) Fertility and Sterility, 2008. Eating disorders such as anorexia nervosa are also associated with extremely low BMI. 4) Uterine fibroids: Fibroids are very common (approximately 40% of women may have them) and the mere presence alone does not necessarily cause infertility. Pregnancy with Sperm Aspiration from the Proximal Head of the Epididymis: A New Treatment for Congenital Absence of the Vas Deferens. (PDF, 2 MB) Fertility and Sterility, 1988. A detailed history and physical examination is necessary for both partners.