P–629 Is spontaneous ovulation better than induced ovulation for frozen-thawed embryo transfer cycle?

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
P K Sim ◽  
P Nadkarni
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Ongoing Pregnancy ◽  
Ongoing Pregnancy Rate ◽  
Significance Level ◽  
Induced Ovulation ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

Abstract Study question Between spontaneous ovulation (SPO) and induced ovulation (INO) comparing clinical pregnancy rate and ongoing pregnancy rate for frozen-thawed embryo transfer (FET) cycle, which is better? Summary answer Both spontaneous ovulation and induced ovulation protocols showed no significant difference in clinical pregnancy rates and ongoing pregnancy rates. What is known already Recent practice worldwide is moving towards elective freezing of all embryos and subsequent frozen-thawed transfer, both for a perceived higher pregnancy rate as well as the significant reduction of ovarian hyperstimulation. The timing of FET can be determined by either detecting the spontaneous Luteinizing Hormone surge (SPO group) or by the administration of hCG (INO group). There is still an ongoing debate to determine which is the best protocol for frozen-thawed embryo transfer in the non-hormone replacement therapy (non-HRT) cycle. Study design, size, duration This retrospective study included 500 FET cycles for patients who had regular menses between June 2017 and June 2020. The FET cycles were grouped by type as follows: SPO (n = 281) and INO (n = 219). The primary outcome was the clinical pregnancy rate and the secondary outcome was ongoing pregnancy rate. Ongoing pregnancy is defined as a viable intrauterine pregnancy at 12 weeks of gestation confirmed on an ultrasound scan. Participants/materials, setting, methods This study was conducted in a single IVF centre. Vitrification was used as the cryopreservation method. To standardize outcome measures, only patients having single blastocyst transfer and aged under 38 years old were included. The average age of the patient was 32.9. Gamete donation, embryo donation, pre-implantation testing and assisted hatching cycles were also excluded from the analysis. Categorical data were analysed using Chi-square test SPSS version 25. Main results and the role of chance Clinical pregnancy rate for SPO group was 54.8% (154/281) versus 52.9% (116/219) in INO group. Even though clinical pregnancy rate was higher in SPO group as compared to INO group, it did not reach significance level (ꭓ2 = 0.17, p = 0.68). As all patients had single blastocyst transferred, the implantation rate was the same as clinical pregnancy rate. Ongoing pregnancy rate was also found higher in SPO group as compared to INO group (135/281, 48.0% and 97/219, 44.3% respectively) but again failed to reach significance level (ꭓ2 = 0.70, p = 0.40). Limitations, reasons for caution The retrospective nature of the study and therefore, the analysis was not adjusted for confounding factors such as blastocyst grading, etiology of infertility, and ethnicity of patients. Wider implications of the findings: In natural cycle, both spontaneous ovulation and induced ovulation protocols had the same pregnancy outcomes for frozen-thawed embryo transfer. However, induced ovulation can facilitate in scheduling FET timing to avoid weekends and public holidays, if necessary. Trial registration number Not applicable

scholarly journals Does Estradiol Orally and Vaginally Administered Together Impact Live Birth and Neonatal Outcome in Artificial Frozen-thawed Embryo Transfer Cycles: A Retrospective Cohort Study

2020 ◽  
Author(s):  
Yuan Liu ◽  
Yixia Yang ◽  
Xinting Zhou ◽  
Yanmei Hu ◽  
Yu Wu
Keyword(s):  
Pregnancy Rate ◽  
Preterm Delivery ◽  
Embryo Transfer ◽  
Live Birth ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Delivery Rate ◽  
Serum Estradiol ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

Abstract Background: Previous studies have demonstrated that newborns from fresh embryo transfer are with higher risk of small for gestation (SGA) rate than those from frozen-thawed embryo transfer (FET). It is suggested that supraphysiologic serum estradiol in controlled ovarian stimulation (COS)is one of reasons. Out study aims to investigate whether exogenous estradiol delivered regimens have an impact on live birth rate and singleton birthweight in hormone replacement (HRT)-FET cycles.Methods:This retrospective study involved patients undergoing their first FET with HRT endometrium preparation followed by two cleavage-staged embryos transfer, comparing orally and vaginal estradiol tablets (OVE) group versus oral estradiol tablets (OE) group from January 2015 to December 2018 at our center. A total of 792 patients fulfilled the criteria, including 282 live birth singletons. Live birth was the primary outcome. Secondary outcome included clinical pregnancy rate, singleton birthweight, large for gestational age (LGA) rate, SGA rate, preterm delivery rate. Results:Patients in OVE group achieved higher serum estradiol level with more days of estradiol treatment. No difference in live birth (Adjusted OR 1.327; 95%CI 0.982, 1.794, p=0.066) and clinical pregnancy rate (Adjusted OR 1.278; 95%CI 0.937, 1.743, p=0.121) was found between OVE and OE groups. Estradiol route did not affect birth weight (β=-30.962, SE=68.723, p=0.653), the odds of LGA (Adjusted OR 1.165; 95%CI 0.545, 2.490, p=0.694), the odds of SGA (Adjusted OR 0.569; 95%CI 0.096, 3.369, p=0.535) or the preterm delivery rate (Adjusted OR 0.969; 95%CI 0.292, 3.214, p=0.959).Conclusion:Estrogen orally and vaginally together did not have an impact on clinical outcomes and singleton birthweight compared to estrogen orally taken, but was accompanied with relative higher serum E2 level and potential maternal undesirable risks.

scholarly journals Twice vitrification-warming procedures has no effect on frozen-thawed embryo transfer outcomes

2021 ◽  
Author(s):  
xiaoyue Shen ◽  
Min Ding ◽  
Yuan Yan ◽  
Shanshan Wang ◽  
jianjun Zhou ◽  
...  
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Live Birth ◽  
Birth Rate ◽  
Live Birth Rate ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Miscarriage Rate ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

Abstract Background To evaluate the frozen-thawed embryo transfer (FET) outcomes of repeated cryopreservation by vitrification of blastocysts derived from vitrified-warmed day3 embryos in patients who experienced implantation failure previously. Methods We retrospect the files of patients who underwent single frozen-thawed blastocyst transfer cycles in our reproductive medical center from January 2013 to December 2019. 127 patients transfer of vitrified-warmed blastocysts derived from vitrified-warmed day3 embryos were defined as twice-cryopreserved group. 1567 patients who transfer blastocysts that had experienced once vitrified-warmed were used as once-cryopreserved group. None of them was pregnant at the previous FET. The outcomes were compared between two groups after a 1:1 propensity score matching (PSM). Results The clinical pregnancy rate was 52.76%, live birth rate was 43.31% in twice-cryopreserved group. After PSM,108 pairs of patients were generated for comparison. The clinical pregnancy rate, live birth rate or miscarriage rate was not significantly different between two groups. Logistic regression analysis indicated that double vitrification-warming procedures did not affect FET outcomes in terms of clinical pregnancy rate (OR 0.83, 95%CI 0.47-1.42), live birth rate (OR 0.93, 95%CI 0.54-1.59), miscarriage rate (OR 0.72 95%CI 0.28-1.85). Furthermore, the pregnancy complications rate, gestational age or neonatal abnormalities rate between two groups was also comparable, while twice vitrification-warming procedures might increase the macrosomia rate (19.6% vs. 6.3%, P = 0.05). Conclusion Transfer of double vitrified-warmed embryo at cleavage stage and subsequent blastocyst stage did not affect live birth rate and neonatal abnormalities rate, but there was a tendency to increase macrosomia rate, which needs further investigation.

scholarly journals Pretreatment With a Long-acting GnRH Agonist in Early Follicular Phase Increases Clinical Pregnancy Rate in Frozen-thawed Embryo Transfer Cycles

2021 ◽  
Author(s):  
Bin xu ◽  
Jing Zhao ◽  
Zhaojuan Hou ◽  
Nenghui Liu ◽  
Yanping Li
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Hormone Replacement ◽  
Follicular Phase ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Early Follicular Phase ◽  
Long Acting ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

Abstract Background: It is controversial whether gonadotropin-releasing hormone agonist (GnRHa) pretreatment can benefit the pregnancy outcomes in frozen-thawed embryo transfer (FET) cycles. In most of studies, GnRHa was administered during the mid-luteal phase for pretreatment. Few studies focus on FET cycles with GnRHa administered in early follicle phase.Methods: The retrospective cohort study was conducted in a university-affiliated IVF center. 630 patients in the GnRHa FET group and 1141 patients in the hormone replacement treatment (HRT) FET without GnRHa group from October 2017 to March 2019 were included. The menstruation cycle of these patients was irregular. Results: There were no differences observed between the two groups in patient’s characteristics. However, the GnRHa FET group showed a higher percentage of endometrium with triple line pattern (94.8% vs 89.6%, p<0.001) on the day of progesterone administration, and an increased implantation rate (34.7% vs 30%, p<0.01), biochemical pregnancy rate (60.6% vs 54.3%, p = 0.009), and clinical pregnancy rate (49.8% vs 43.3%, p = 0.008), as compared to that in the HRT FET cycles with similar endometrial thickness, ectopic pregnancy rate, and early miscarriage rate. Binary logistic regression analysis showed the GnRHa FET group to be associated with an increased chance of clinical pregnancy rate compared with HRT FET without GnRHa group (P=0.014, odds ratio [OR] 1.30, 95% confidence interval [CI] 1.06-1.61).Conclusions: Pretreatment with a long-acting GnRHa in early follicular phase can improve the clinical outcome of the FET cycles. However, further randomized control trials (RCTs) will be needed to verify these results.

P–151 Correlation between the first euploid frozen-thawed blastocyst embryo transfer (FBT) and the subsequent euploid FBT outcome originating from the same cohort of oocytes

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
R Abalı ◽  
F K Boynukalın ◽  
M Gültomruk ◽  
Z Yarkiner ◽  
M Bahçeci
Keyword(s):  
Regression Analysis ◽  
Pregnancy Rate ◽  
Pregnancy Outcome ◽  
Embryo Transfer ◽  
Live Birth ◽  
Endometrial Thickness ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Ongoing Pregnancy ◽  
Ongoing Pregnancy Rate

Abstract Study question Does the outcome of the first euploid frozen-thawed blastocyst embryo transfer affect the subsequent euploid FBT originating from the same cohort of oocytes? Summary answer The clinical pregnancy rate and ongoing pregnancy rate of the subsequent FBT are higher if a clinical pregnancy was attained in the first euploid FBT. What is known already Numerous factors including patient, cycle and embryological characteristics affect the outcome of an IVF treatment cycle. There is no data available whether the outcome of euploid FBT has an impact on the outcome of the subsequent euploid FBT of embryos originating from the same cohort of retrieved oocytes. Study design, size, duration The study enrolled cycles preimplantation genetic test for aneuploidy (PGT-A) performed between January 2016 and July 2019 at the Bahceci Fulya IVF Center. A total of 1051 patients with single euploid FBT were evaluated and resulted live birth (n = 589, live birth rate (LBR): 56%(589/1051)), miscarriage (n = 100, miscarriage rate (MR): 14.5% (100/689)) and no clinical pregnancy (n = 362, 34,4%, (362/1051)). 159 FBT after the first single euploid FBT originating from the same cohort of oocytes were analyzed. Participants/materials, setting, methods Second euploid FBT cycle after first FBT with a clinical pregnancy were compared to frozen-thawed cycles after a without a pregnancy. Logistic regression analysis was utilized to adjust for potential confounders including female age, body mass index, embryo quality, day of embryo frozen, number previous failed attempt, number of previous miscarriage, endometrial thickness, outcome of the first euploid FBT. Main results and the role of chance The pregnancy outcome from the first euploid FBT in the study group was resulted live birth (25.1%, (40/159)), miscarriage (15.7%, (25/159)) and no clinical pregnancy (59.1%, (94/159). The pregnancy outcome of the subsequent euploid embryo transfer from the same oocyte cohort was clinical pregnancy rate (CPR): (67.3%, (107/159) ongoing pregnancy rate (OPR) (52.2% (83/159) and MR (22.4%, (24/107)). The CPR in the subsequent euploid FBT was 80% (52/65) among patients who achieved a clinical pregnancy in the first euploid FBT and 58.5% (55/94) of those who did not (p = 0.0045). The OPR in the subsequent euploid FBT was 64.6% (42/65) among patients who achieved a clinical pregnancy in first euploid FBT and 43.6% (41/94) of those who did not (p = 0.009). On a multivariate regression analysis, clinical pregnancy in the first euploid FBT was a significant independent predictor for a pregnancy in the subsequent FBT transfer (p = 0.003). Limitations, reasons for caution The limitation of the study is in the retrospective nature of the study. As the PGT-A strategy significantly decreases number of transferable embryos, the sample size of the study is limited. Wider implications of the findings: Identifying predictive factors for the success of euploid FBT is important. These can help physicians while counseling patients regarding the outcome of the previous euploid FBT. Trial registration number NA

Endometrium immunomodulation by intrauterine insemination administration of treated peripheral blood mononuclear cell prior frozen/thawed embryos in patients with repeated implantation failure

Zygote ◽  
2019 ◽  
Vol 27 (4) ◽  
pp. 214-218 ◽  
Author(s):  
Fattaneh Farifteh Nobijari ◽  
Seyedeh Soheila Arefi ◽  
Ashraf Moini ◽  
Robabeh Taheripanah ◽  
Elham Fazeli ◽  
...  
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Peripheral Blood ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Control Group ◽  
Peripheral Blood Mononuclear ◽  
Significant Difference ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

SummaryIn assisted reproductive technology (ART) programmes, approximately 10% of infertile patients have at least two or three repeated implantation failures (RIFs) after an in vitro fertilization (IVF) protocol. Successful implantation mainly depends on local immune tolerance mechanisms involving a spectrum of cytokines, interleukins and growth factors. The latter have played pivotal roles in the recruitment of immune cells (and notably T-lymphocyte cells). In total, 250 couples participating in frozen–thawed embryo transfer programme were incorporated in a randomized clinical trial (peripheral blood mononuclear cells (PBMC) subgroup: n=122; control subgroup: n=128). In the PBMC group, a blood sample was collected 5 days before the scheduled frozen–thawed embryo transfer; PBMCs were isolated using Ficoll separation and then cultured for 72 h. Two days prior to embryo transfer, 0.4 ml of cultured PBMCs were transferred into the patient’s uterus. Although the clinical pregnancy rate was higher in the PBMC group (34.4%) than in the control group (23.4%), this difference was not statistically significant (P=0.05 in a chi-squared test). Nevertheless, when we limited the analysis to patients with ≥3 RIFs (n=138), there was a significant difference in the clinical pregnancy rate between the PBMC group (38.6%) and the control group (19.7%; P=0.01). Our results imply that PBMC transfer can be part of effective fertility treatment for patients with RIF.

scholarly journals A Novel Promising Endometrial Preparation Protocol for Frozen-Thawed Embryo Transfer: A Randomized Controlled Trial

2021 ◽  
Vol 12 ◽  
Author(s):  
Jian-Chun Li ◽  
Yan-Hong Wang ◽  
li-Ying Peng ◽  
Yun Zhou ◽  
Shi-Bin Chao
Keyword(s):  
Pregnancy Rate ◽  
Embryo Transfer ◽  
Pilot Trial ◽  
Implantation Rate ◽  
Clinical Pregnancy ◽  
Clinical Pregnancy Rate ◽  
Randomized Controlled ◽  
Endometrial Preparation ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

BackgroundIn recent years frozen-thawed embryo transfer (FET) has played an increasingly important role in ART, but there is limited consensus on the most effective method of endometrial preparation (EP) for FET. Inspired by significantly higher implantation rate and clinical pregnancy rate of the depot GnRH-a protocol, we proposed a novel EP protocol named down-regulation ovulation-induction (DROI) aimed to improve pregnancy outcomes of FET.MethodsThis was a single-center, randomized controlled pilot trial. A total of 307 patients with freeze-all strategy scheduled for first FET were enrolled in the study. A total 261 embryos were transferred in DROI-FET group including 156 patients and 266 embryos were transferred in mNC-FET group including 151 patients. Reproductive outcomes were compared between the two groups.ResultsThe basic characteristics of patients, and the average number, quality and stage of embryos transferred were comparable between the two groups. Our primary outcome, implantation rate(IR) in DROI-FET group, was significantly higher than that of the mNC-FET group (54.41% versus 35.71%, P&lt;0.01). The clinical pregnancy rate (CPR) and ongoing pregnancy rate (OPR) in DROI-FET group was also higher than that in mNC-FET group (69.87% versus 50.33%, P&lt;0.01; 64.10% versus 42.38%, P&lt;0.01).Conclusion(s)Compared to existing endometrial preparation methods, the DROI protocol might be the more efficient and promising protocol.

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