In IVF treatment, embryo quality and endometrial receptivity are two key factors determining success. Even if there are high-quality embryos, implantation failure may occur if the endometrium is not in the right state.
This is why some surrogate mothers wonder, “My embryo has excellent quality, and the thickness of the endometrium is also normal. Why does implantation still fail?”
The answer may lie in the “implantation window period” of the endometrium.
1. What is the ERA planting window period?
ERA (Endometrial Receptivity Array) is a technique used to determine the optimal time for endometrial receptivity through gene expression analysis.
,.For most women, this window occurs 6-8 days after ovulation (i.e., days 3-5 of embryo transfer), but individual differences are large.
,25-30%,,.If an embryo is transferred at the wrong time, even if the embryo is of good quality, it may lead to implantation failure.
Second, why is it necessary to detect ERA?
2.
2. Reduce repeated implantation failuresFor patients who have experienced multiple tube failures, ERA testing can help identify the cause.
3. Personalized treatmentThe physiological cycle of each person is different, and ERA testing can provide personalized transplant time for each patient.
4. Save time and costto avoid failure caused by improper transplant time, and reduce the time and cost of repeated treatment.
III. How to detect ERA?
1.
1. Simulated transfer cycleSimulate the process of embryo transfer in a natural or artificial cycle.
2. Endometrial biopsiesobtain a small amount of endometrial tissue by hysteroscopy or curettage during the expected implantation window (usually 5 days after ovulation).
3. Genetic analysissent endometrial tissue to the laboratory for gene expression analysis and detected 238 genes related to endometrial receptivity.
4. Interpretation of resultsBased on gene expression results, determine the status of the endometrium (receptive period, non-receptive period, or transitional period) and recommend the appropriate transplant time.
4. Who needs to undergo ERA testing?
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1. Patients with repeated implantation failureshave experienced 2 or more tube failures and patients with normal embryo quality.
2. Patients with endometrial problemsPatients with endometrial problems such as endometriosis and endometritis.
3. Elderly patientsare older patients and may have decreased endometrial receptivity.
4. Frozen embryo transfer patientsPatients using frozen embryos require more precise transfer times.
It is hoped that patients can achieve success in a single treatment session, thereby reducing the need for repeated treatments.
nAdvantage
-Personalize to determine the appropriate transplanttime
-Help find the reason for repeated failed implantation
-Reduce unnecessary treatments, save time and money
Limitations
-Higher testing costs (about 5,000 - 8,000 yuan)
-Endometrial biopsy is required, which is somewhat invasive
-Test results may be affected by multiple factors and are not 100% accurate
-Not suitable for all patients and requires doctor evaluation if necessary
Six
Ms. Wang, 32, has experienced three test tube failures. The quality of the embryos is very good and the thickness of the intima is normal.
32,3,,.The doctor advised her to have an ERA test and found that her planting window was delayed by one day than the standard time
After adjusting the transplantation time, Ms. Wang successfully became pregnant for the fourth time through in vitro fertilization. Now, she is a mother of a healthy baby.
ERA implantation window testing provides a new method for test-tube families to help embryos find the right implantation time. However, it should be noted that ERA testing is not a panacea. It is just an auxiliary means for the success of test tubes.
The ERA implantation window detection provides a new approach for IVF families, helping embryos to find the appropriate time for implantation. However, it should be noted that ERA testing is not a panacea; it serves merely as an auxiliary tool to increase the chances of successful IVF outcomes.
,,,.If you are experiencing test tube failure, consult your doctor to find out if an ERA test is right for you.
I hope that every expectant mother can find the treatment plan that best suits her needs, and soon meet her own little baby!