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Some systems are lightweight constructions (18 kg) and can withstand a force of 20 N in any position and direction. They can also carry out some basic tests on both partners to see if there is an identifiable reason for not having achieved a pregnancy. According to Ross, “anything that improves quality of health, like adequate sleep and nutrition,” should improve fertility. However, if you haven’t had your period in months, it might be a good idea to seek medical advice.  Heavy and/or painful periods: Periods that hamper your daily activity may be a symptom of fibroids in the uterus or endometriosis. In order to conceive, your sperm must be:  Highly concentrated — normally, there should be at least 15 million sperm in every ml of semen5  Moving well (motile) — a lashing tail helps your sperm to swim to your partner’s egg  Normally shaped — healthy sperm should be shaped like a streamlined tadpole  You may find that your semen contains a very low number of sperm (oligozoospermia), or no sperm at all (azoospermia).

Microsurgery of the Male Genitalia for Infertility. (PDF, 8 MB) Chapter 59 from Reconstructive Urologic Surgery, 1994. Motility, adhesions and focusses of endometriosis can precisely be assessed by laparoscopy with blue instillation.

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Role of Semen Analysis in Subfertile Couples. (PDF, 250 KB) Fertility and Sterility, 2010. Often, but not always, submucosal fibroids can cause heavy periods, or bleeding between periods. Pelvic inflammatory disease or STIs like chlamydia and gonorrhea may cause these blockages in the fallopian tubes.

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There is more controversy regarding intramural fibroids, where larger ones may have an impact and may necessitate removal. Quantitative Evaluation of Spermatogenesis by Testicular Histology in Men with Congenital Absence of the Vas Deferens Undergoing Epididymal Sperm Aspiration. (PDF, 3 MB) Human Reproduction, 1990. Treatment of hydrosalpinx (distal tubal obstruction) with salpingostomy can be performed through microsurgery or operative laparoscopy. As the amount of adipose tissue increases, there is more aromatase available to convert androgens, and serum estradiol levels increase.

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Hypothalamic-pituitary-gonadal axis stimulatory and inhibitory signals. Because of a defect in the dynein arms, spokes, or microtubule doublet, cilia in the respiratory tract and in sperm do not function properly. Spermatogonia and Sertoli cells lie on the basement membrane of the seminiferous tubules. Hofherr SE, Wiktor AE, Kipp BR, Dawson DB, Van Dyke DL. Results of one study investigating a cohort of 315 men revealed changes within the hinge region of SF-1 and no rare allelic variants in fertile control men.