Implantation

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implantation

[‚im‚plan′tā·shən]
(medicine)
Placement of a tissue transplant in depth in the body.
Placement in the body of a device for mechanical repair, such as for a ventral hernia or a fracture.
Embedding of an embryo into the endometrium.

Implantation

 

the attachment of the embryo to the wall of the uterus in man and in all mammals with intrauterine development.

Three types of implantation are distinguished: superficial implantation, in which the embryo remains in the uterine cavity and attaches itself to the wall either by the entire surface of the trophoblast or by part of it (in Chiroptera and ruminants); eccentric implantation, in which the embryo deeply penetrates a fold of the uterine mucosa (a uterine crypt), the wall of which then grows together over the embryo and forms an implantation chamber that is isolated from the uterine cavity (in rodents); and interstitial implantation, characteristic of higher mammals (primates and man), in which the embryo destroys cells of the uterine mucosa and implants itself within the cavity formed, the uterine defect then healing and the embryo embedding itself totally within the uterine wall, where its subsequent development occurs.

References in periodicals archive ?
The objectives were to study the incidence and indications of cochlear re-implantation and determine CSR of cochlear implantation.
The systematic review found five studies with a total of 796 patients with recurrent implantation failure in Argentina, China, Italy, Japan, and the United States.
There are still very few published studies addressing complications associated with the implant or the implantation procedure itself [13, 20, 21].
Among our patients, two experienced three complications in relation to the 10 surgeries performed (25% of patients, 30% of implantations).
Currently, preoperative computed tomography (CT) scanning of the temporal bones forms part of the routine adult cochlear implantation assessment.
Warfarin is a widely used anti-coagulant used in the prevention of thrombosis and thromboembolism typically associated with a number of cardiovascular diseases including atrial fibrillation (AF), prosthetic valves, deep vein thrombosis (DVT), pulmonary embolisation (PE) and intra-cavity thrombosis.1-3 Increasingly, more and more patients undergoing long-term warfarin therapy require implantation of cardiac rhythm devices (CRDs), with peri-procedural management of anti-coagulation therapy representing a common clinical challenge for all cardiologists during implantation.4 Peri-operative management strategies of patients with long-term anti-coagulation therapy involve continuation and interruption approaches.5 However, the choice of strategy remains controversial.
Rate of implantation is increasing with rise in co-morbid conditions, aging of general population, expanding indications and increasing availability of implanting physicians2,3.
[sup][3],[5] To the best of our knowledge, limited data regarding the usefulness of sonographic-guided percutaneous fiducial marker implantation for hepatic malignancies.
The study also demonstrated no long-term side effects from the BMNCs, leading the researchers to conclude that single and multiple BMNCs implantations were safe for pethatric patients as well as adults.
The statement lists several criteria for nonelectrophysiologists to meet before being considered competent at ICD and CRT implantation:
This figure was drawn primarily to show resorptions--the difference between implantations and births.