When the two red bars carrying countless hopes clearly appeared on the pregnancy test stick, 44 year old Ms. Lin rubbed her eyes repeatedly, tears bursting from her eyes in an instant. She only had one blastocyst rated as 4BB in her hand, but successfully became pregnant during her first transplant at the Tulip International Reproductive Center.

People around her say she was extremely lucky, but only she and our expert team know that behind this seemingly accidental "luck" lies a crucial and thoughtful medical decision - to actively shout "stop" and undergo "frozen embryo transfer (FET)".

Background: A thorny road to finding a child

Like many elderly women, Ms. Lin's journey of preparing for pregnancy has been exceptionally difficult. Due to career struggles in my youth, my birth plan was repeatedly postponed. Until the actual start of pregnancy preparation, I realized that time had become the biggest enemy.

Physical condition: Long term high-intensity work leading to overweight, accompanied by insulin resistance, and extremely irregular menstrual cycles. Gynecological examination showed that one side of her fallopian tube was unobstructed, while the other side was unobstructed.

At the age of 40, she resolutely embarked on the journey of IVF. However, on the first attempt at natural cycle egg retrieval, I encountered an "empty follicle" and was unable to obtain any eggs, which dealt a devastating blow to my confidence.

After several adjustments and attempts, at the age of 42, she finally successfully cultivated a 4-BB level blastocyst through a micro stimulation cycle.

Tulip experts interpret "4BB":

In blastocyst grading, the first number "4" represents the developmental stage of the blastocyst (already in the expansion stage);

The second letter "B" represents the rating of the "inner cell mass" that will develop into a fetus in the future (with fewer cells);

The third letter "B" represents the rating of the "trophoblast cells" that will develop into the placenta in the future (sparse cell layer). Overall, 4BB is a blastocyst with good developmental potential, but it is not at the top level of 'excellent'.

For Ms. Lin, who is 42 years old, this embryo carries almost all of her hopes.

Key Decision: Why Do Doctors Recommend 'Suspending' Transplantation?

According to the usual procedure, it seems that fresh cycle transplantation should be carried out while the iron is hot. However, after a comprehensive assessment of Ms. Lin's physical condition, experts from the Tulip International Reproductive Center made a seemingly "delaying" decision: "We will not transplant this precious blastocyst in this cycle and will vitrification freeze it. We will spend 1-2 months specifically conditioning your endometrial environment

What is the scientific logic behind this decision?

The "non physiological" endocrine environment after ovulation induction:

During the ovulation induction cycle, in order to obtain eggs, doctors will use medication to increase the level of estrogen (E2) in the female body to a super physiological high value far beyond the natural cycle. This high estrogen environment, although beneficial for follicle growth, may have a negative impact on the receptivity of the endometrium, leading to "asynchronous" development between the endometrium and the embryo, known as the "implantation window" closing prematurely.

Ms. Lin's own problem:

The doctor pointed out sharply, "We now have a good 'seed', but your 'soil' (endometrial environment) condition is very poor

Ms. Lin's insulin resistance, potential chronic inflammatory state, and poor uterine microcirculation that may accompany advanced age can seriously interfere with the implantation process of the embryo.

Forcefully transplanting in this' suboptimal 'physical state is like scattering a precious seed onto a barren land, with a high risk of failure.

The golden buffer period of "pause": a "precise battle" against the inner membrane

The two months of 'pause' were not idle waiting, but a highly individualized endometrial optimization project led by a multidisciplinary team from Tulip International Reproductive Center.

Metabolism and endocrine regulation:

By using drugs such as metformin, combined with strict dietary and exercise guidance, her insulin resistance was significantly improved, reducing chronic damage to the endometrium from the source.

Immune and anti-inflammatory regulation:

Low doses of aspirin and other medications were administered to suppress unnecessary inflammatory reactions in the body and improve uterine microcirculation, ensuring abundant blood flow to deliver sufficient oxygen and nutrients to future embryos.

Accurate "artificial cycle" endometrial preparation:

During the transplantation cycle, we administered hormone replacement therapy (HRT) to her. By exogenously and precisely controlling the timing and dosage of estrogen and progesterone medication, we can artificially and perfectly simulate an ideal physiological cycle, accurately regulating the thickness, morphology, and receptivity of the endometrium to the "optimal implantation window" that is most suitable for embryo implantation.

All these efforts are aimed at transplanting that unique 4BB blastocyst into a warm and fertile "home" tailor-made for it.

Slow is fast: enlightenment for all older sisters with fewer eggs

Ms. Lin's successful case provides a valuable direction for countless elderly women with ovarian dysfunction and only a few precious embryos in their hands to think about:

The advantages of the strategy of whole embryo freezing+frozen embryo transfer (Freeze all&FET):

Research and clinical practice have long confirmed that for specific populations (such as those with high response, advanced age, and poor endometrial condition), using whole embryo freezing and waiting for maternal hormone levels and uterine environment to recover to their optimal state before performing frozen embryo transplantation results in significantly higher live birth rates than fresh cycle transplantation.

Transitioning from "probability" to "creating conditions":

The success of in vitro fertilization depends not only on the number and grade of embryos, but also on the perfect "synchronicity" and "compatibility" between the embryo and the endometrial environment. Blindly pursuing a seamless transition between egg retrieval and transplantation can sometimes lead to haste and failure.

Pause "is a higher-level reproductive intelligence:

Proactively choosing 'pause' is not a waste of time, but a more precise and responsible medical strategy. It means that we have shifted from pursuing "speed" to pursuing "quality", and have firmly grasped the weight of success in our own hands.

At Tulip International Reproductive Center, we firmly believe that time is precious, but using the right time in the right place is the most efficient. Ms. Lin's story proves that sometimes the best strategy is precisely the scientifically wise sentence - "Don't rush, let's stop for a moment, and then set off when we're ready

For fertility consultation in Kyrgyzstan, please contact your dedicated consultant

/Fertility Consultation /

Dr.Chan

Copy and add: Tulip_EnoChan

Or long press/scan the QR code to add

Tulip International Fertility Center

Technology aids fertility, fulfilling dreams for countless families