In the IVF procedure, the health of the endometrium plays a crucial role in the success of the transplant. As a crucial site for embryo implantation, the condition of the endometrium directly determines whether the embryo can implant successfully, thereby influencing the overall success of the IVF process. So, what are the standards for the endometrium before the transplant? Let’s have professional IVF experts in the United States provide some information.

What standards should the endometrium meet before IVF transfer?

1. Moderate Thickness of the Endometrium

Thickness is one of the important indicators for evaluating the health of the endometrium. Generally, a healthy endometrium should have a thickness between 8-12mm. At this stage, the endometrium is relatively smooth and even, providing a favorable environment for the embryo to implant smoothly. This stability is crucial for the later development and growth of the embryo.

If the thickness of the endometrium is less than 8mm before embryo transfer, it may be relatively thin, making it difficult for the embryo to implant. Even if implantation occurs, it may not develop smoothly in the uterine cavity. On the other hand, if the endometrial thickness exceeds 12mm, it may not be conducive to embryo implantation and development. Further examination, such as hysteroscopy, may be needed to identify and treat issues like polyps or tumors.

2. Normal Uterine Morphology

An ideal uterine shape is slightly flattened, resembling an inverted pear shape with a broad upper part and a narrow lower part. The uterus should have a cylindrical or fusiform appearance. The position of the uterus also affects embryo implantation. Abnormal positions, such as anteversion, retroversion, or excessive anteversion, may make implantation difficult. Before embryo transfer, doctors may use gynecological and ultrasound examinations to identify abnormal uterine positions and take corrective measures, such as adjusting the position or using a cervical dilator, to improve the success rate of transplantation.

3. Absence of Uterine Lesions

The presence of lesions in the uterus before transplantation can adversely affect embryo implantation and may release factors detrimental to embryo survival.

Common uterine lesions include endometritis, endometrial hyperplasia, endometrial polyps, and intrauterine adhesions. Diagnosis methods such as hysteroscopy and tissue biopsy may be employed to identify these lesions. Treatment measures, such as antibiotics for endometritis or corrective procedures for adhesions, can be taken to eliminate the lesions and improve the success rate of transplantation.