Under the implantation in embryology commonly understood as the process by which the formed embryo in the uterine mucous membrane. This process is one of the critical stages of pregnancy. After all directly from him and begins gestation. Let’s consider it in more detail and will answer a frequent question of women: what day is implantation of the embryo in the uterine cavity.
How soon after fertilization implantation occurs?
Depending on the time of occurrence of this process, it is customary to distinguish early and late implantation.
If we talk about which day occurs early implantation of the embryo in the uterine cavity, in most cases, this process occurs at 6-7 days after the end of the ovulation process in a woman’s body. In other words, in a week, released and fertilized egg, by dividing turns into a fetus, which goes through the fallopian tube into the cavity of the uterus and is embedded in one of its walls.
When answering the question as to which day is observed late implantation of the embryo in the uterus wall, the embryologist say — more than 10 days from the date of ovulation. It should be noted that this type of embedding of the embryo in the uterine wall are the most characteristic for artificial insemination, i.e. observed in IVF. Due to this fact, in the first place so that the embryo needs time for adaptation after the moment he planted into the uterine cavity.
What conditions are necessary for successful implantation?
Needless to say, that is not always the fertilization ends a pregnancy. Quite often a fertilized egg fails of the fission process or violation of the genetic information dies due to the fact that it can’t penetrate the uterine wall. In other words, when the process of implantation of the embryo, it simply is not embedded in the uterus.
To ensure that this process is successful and the pregnancy, you need to meet the following conditions:
- the thickness of the uterine endometrium must be at least 10-13 mm;
- in the mucosa should contain a sufficient amount of nutrients;
- the concentration of the hormone progesterone that is produced by the yellow body, must be optimal.
Actually the factors that lead to successful implantation, much more. Above are just the main ones.
When the process of embryo implantation after transfer IVF?
Needless to say, that with this method of fertilization is the most common cause of absence of pregnancy lies in the fact that implantation does not occur.
In order to increase the chance of pregnancy, the clinic for reproductive medicine is actively used auxiliary methods, among which can be called hatching – incision embryonic shell to the best of his introduction in the endometrium.
Speaking on the day when the implementation of IVF is an embryo transfer and how many days it lasts, doctors call average period of 10-12 days. This fact is easily confirmed by ultrasound. On average, implantation in the uterine mucosa in the embryo out of order articles 40 to 72 hours, regardless of whether it was natural fertilization or IVF.
Thus, we can say that the fact on which day of the menstrual cycle is implantation of the embryo into the endometrium, practically does not depend on external factors. With this in mind, we can say that on average, the implantation of the embryo in the uterine wall occurs in the period 8-14 days after ovulation or on day 20-26 after the end of menstruation. When conducting ultrasound after 14 days and not detected, the embryo is said about the absence of pregnancy, or interruption in a very small period of time.