Embryo transplant success rate, look at it rationally

We all know about embryo transplantation, but there are two types of embryo transplantation, and different plans have different success rates after transplantation. In fact, its success rate is also related to the mothers' own factors and cannot be generalized. Therefore, we must look at this issue rationally.

In IVF, fresh embryo transfer means that the embryos are cultured and directly transplanted after egg retrieval (usually on the third day after egg retrieval, and on the fifth day for blastocysts). If the embryo is not transplanted on this day, it will be frozen and all future transplants will be called frozen embryo transplants.

As freezing technology matures, the damage to embryos during the freezing process is getting less and less. It is now generally believed that frozen-thawed embryos are almost indistinguishable from fresh embryos. Although freezing technology is very mature, is the success rate of frozen embryo transplantation really higher than that of fresh embryo transplantation? In response to this issue, experts from the Reproductive Center of Beijing Jia'en Deyun Hospital provided professional interpretation for everyone.

First of all, the success rate is determined by multiple factors such as embryo quality and endometrial environment. It is not very meaningful to simply talk about the success rate of fresh embryos and frozen embryos. However, fresh embryo transfer and frozen embryo transfer do have their own advantages and disadvantages.

Regarding fresh embryo transplantation: First, transplanting fresh embryos saves patients storage costs and waiting time; second, although the current freezing technology is very mature and hundreds of thousands of frozen embryo babies have been born in the world, there are no clear reports that embryo freezing has any impact on them, but the risks have not been completely ruled out.

Under what circumstances should we choose frozen embryo transfer? First of all, we have to consider some objective factors, mainly referring to the patient's physical discomfort, such as: the patient has a fever of more than 38 degrees, the endometrium is not good enough, or OHSS (ovarian hyperstimulation), etc.; there are also some subjective factors, such as due to the patient's work or family reasons, it is not convenient to transplant in the same cycle. The doctor will suggest that the patient freeze the embryos first and transplant them when the time is right.

Therefore, whether to transplant fresh embryos or frozen embryos is decided by the doctor based on the patient's condition, and the doctor will choose a treatment plan that is more suitable for her. At present, fresh embryo transplantation is generally used. When the conditions for fresh embryo transplantation are met, there is no need to deliberately choose frozen embryo transplantation. Of course, if frozen embryo transplantation is needed, there is no need to have any concerns.