Subzonal insemination Health Dictionary

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Subzonal Insemination: From 1 Different Sources

(Suzi) a method of assisting conception in cases of infertility caused by the inability of the spermatozoa to penetrate the barriers surrounding the ovum. Using *in vitro fertilization techniques, a small number of spermatozoa (no more than six) are injected through the *zona pellucida into the perivitelline space (which surrounds the egg membrane). If fertilization subsequently occurs, the blastocyst is implanted in the mother’s uterus.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Donor Insemination

Use of the SEMEN of an anonymous donor to produce fertilisation in cases of INFERTILITY where the male partner has OLIGOSPERMIA or IMPOTENCE. The donor is chosen for ethnic and physiognomic similarity to the male partner and is screened for transmissible diseases

(e.g. HIV, syphilis, hepatitis, gonorrhoea, and genetic disorders). Insemination is performed at the time of ovulation by introducing the semen into the upper vagina. Semen may be fresh or have been stored frozen in liquid nitrogen. (See ARTIFICIAL INSEMINATION.)... donor insemination

Insemination

The ejaculation of SEMEN in the VAGINA in the act of sexual intercourse. In ARTIFICIAL INSEMINATION the semen is placed there by the use of an instrument. (See also ASSISTED CONCEPTION.)... insemination

Intrauterine Insemination

A method of helping CONCEPTION to occur when a man is infertile (see INFERTILITY) because his sperm (see SPERMATOZOON) cannot penetrate either the cervical mucus at the entrance of the UTERUS or the barriers that surround the OVUM. The sperm, often treated chemically beforehand to increase motility, are injected directly into the uterus via the VAGINA.... intrauterine insemination

Artificial Insemination

A form of assisted conception in which semen is introduced artificially into the uterus, instead of by sexual intercourse, with the aim of inducing pregnancy.

There are 2 types of artificial insemination: , artificial insemination with the semen of the woman’s male partner; and , insemination with a donor’s sperm. is usually used for couples who are unable to have intercourse, or if the man has a low sperm count or a low volume of ejaculate. It is also used when semen has been stored from a man prior to treatment (such as chemotherapy) that has made him sterile. is available to couples if the man is infertile or is a carrier of a genetic disease. It may also be used by a woman who wants children but has no male partner.

Insemination is timed to coincide with natural ovulation or may be combined with treatment to stimulate ovulation.... artificial insemination


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