Implantation Health Dictionary

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Implantation: From 2 Different Sources

(1) The placing of a substance such as a drug, or an object such as a pacemaker, in a body tissue.

(2) The surgical replacement of injured or unhealthy tissue or organ with healthy tissue or organ (also known as TRANSPLANTATION).

(3) Attachment of the early EMBRYO to the lining of the UTERUS, which occurs around six days after conception; the site where this happens is where the placenta will develop.

Health Source: Medical Dictionary
Author: Health Dictionary
n. 1. (nidation) the attachment of the early embryo to the lining of the uterus, which occurs at the *blastocyst stage of development, six to eight days after ovulation. The site of implantation determines the position of the placenta. 2. the placing of a substance (e.g. a drug) or an object (e.g. an artificial pacemaker) within a tissue. 3. the surgical replacement of damaged tissue with healthy tissue (see transplantation).
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Implantation, Egg

Attachment of a fertilized ovum (egg) to the wall of the uterus.

It occurs about 6 days after fertilization, when the blastocyst (early embryo) comes into contact with the wall of the uterus.

As the cells of the developing embryo continue to divide, the outer cell layer penetrates the lining of the uterus to obtain oxygen and nutrients from the mother’s blood; later, this layer develops into the placenta.

The embryo usually implants in the upper part of the uterus; if it implants low down near the cervix, placenta praevia may develop.

Rarely, implantation occurs outside the uterus, possibly in a fallopian tube, resulting in an ectopic pregnancy.... implantation, egg

Transcatheter Aortic Valve Implantation

(TAVI) replacement of the aortic valve in patients with *aortic stenosis using a catheter-delivered prosthesis rather than open heart surgery. Usually the catheter is passed via the femoral artery, but sometimes it can be passed via the subclavian artery or through the wall of the left ventricle via a localized *thoracotomy.... transcatheter aortic valve implantation

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