Uterine movements for the correct implantation of embryos in IVF

New images allow us to see how the endometrium moves to keep the embryo inside the uterine cavity and to prevent its expulsion, facilitating it implants in the most appropriate place.

The Institut Marquès presented the last weekend in the Alpha Conference of London how the uterus behaves when it receives the embryos after in vitro fertilisation. In the images we can observe how the endometrium moves (inner layer of the uterus) which allow the embryos to stand, regardless of the place in which the gynaecologist has deposited them.

Study of ultrasound

For the study, images of ultrasounds of 18 patients were recorded during and after embryo transfer, after in vitro fertilisation. Videos were repeated every hour during four hours after the transfer.

Dr. Marisa López-Teijón, head of assisted reproduction in the Institut Marquès and author of the study, explains that “this study shows that it is not as important as we thought where embryos are placed in the uterine cavity, the uterus is in charge of placing them in the most appropriate place”.

In the first images, we can observe how the microdrop with the embryos passes through the catheter and it is smoothly deposited 1, 2 or 3 cm away from the fundus of the uterus.

In the following ultrasounds the microdrop moves through the endometrial cavity with different undulating, vibratory, slow, fast movements and with resting stages.

In all cases, it is confirmed how the embryos have changed its position with regard to the distance from the uterine fundus after one hour, where it was initially deposited, regardless whether it was 1, 2 or 3 cm away or not.

The discovery shows that it is not necessary the patient rests absolutely and allows to change the medical guideline which is given to the patients after embryo transfer. And, consequently, to reduce the stress it generates, since after transfer women feel so much pressure in case embryos are expelled when they move.

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