冻融胚胎移植周期中胚胎因素的分析研究

目的:分析冻融胚胎移植周期中胚胎卵裂球损伤程度与有丝分裂的恢复对于临床结局的影响。方法:171例患者共进行冻融胚胎移植206个周期,采用慢速冷冻法冻存d3胚胎,快速解冻法复苏后继续培养4h后移植,根据复苏后卵裂球的损伤程度分为完整组、混合组和损伤组,另根据复苏后4h胚胎进行分裂的情况分为分裂组,混合组和未分裂组,比较各组间的临床妊娠率和单胚着床率。结果:206个周期共复苏胚胎632枚,复苏存活率85.44%(540/632),移植胚胎508个,周期妊娠率36.41%(75/206),单胚着床率19.88%(101/508),完整组与损伤组间、分裂组与未分裂组间的临床妊娠率和单胚着床率都有显著性差异(P<0.05)。结论:冻融胚胎移植周期中胚胎卵裂球的损伤程度与有丝分裂的恢复是影响临床结局的重要因素。     

移植8cell胚胎个数与妊娠率的关系

目的:探讨体外受精-胚胎移植(IVF-ET)周期中第三天移植8cell胚胎数量与临床结局的关系。方法:以2009年1月至2010年12月在本中心接受IVF-ET治疗625个周期为研究对象。将所有移植周期按移植8cell胚胎个数分为三组,分析三组的临床妊娠率、胚胎种植率、多胎率有无差异。结果:移植两个8细胞胚胎组(C组)的临床妊娠率(59.5%)显著高于无8细胞胚胎移植组(A组)和含一个8细胞组(B组)(P<0.05),A、B两组临床妊娠率无显著性差异;C组种植率(39.8%)显著高于其他两组,A组和移植胚胎中含一个8细胞组(B组)种植率比较有显著性差异,;多胎率分析,C组明显高于其他两组。结论:在IVF-ET周期中第3天移植8cell胚胎个数对妊娠率及种植率、多胎率有影响,在挑选胚胎时移植一个8cell胚胎搭配一个其他细胞数的胚胎也能得到较好的妊娠率并有效降低多胎率。     

移植8cell胚胎个数与妊娠率的关系

目的:探讨体外受精-胚胎移植(IVF-ET)周期中第三天移植8cell胚胎数量与临床结局的关系。方法:以2009年1月至2010年12月在本中心接受IVF-ET治疗625个周期为研究对象。将所有移植周期按移植8cell胚胎个数分为三组,分析三组的临床妊娠率、胚胎种植率、多胎率有无差异。结果:移植两个8细胞胚胎组(C组)的临床妊娠率(59.5%)显著高于无8细胞胚胎移植组(A组)和含一个8细胞组(B组)(P<0.05),A、B两组临床妊娠率无显著性差异;C组种植率(39.8%)显著高于其他两组,A组和移植胚胎中含一个8细胞组(B组)种植率比较有显著性差异,;多胎率分析,C组明显高于其他两组。结论:在IVF-ET周期中第3天移植8cell胚胎个数对妊娠率及种植率、多胎率有影响,在挑选胚胎时移植一个8cell胚胎搭配一个其他细胞数的胚胎也能得到较好的妊娠率并有效降低多胎率。     

小于35岁助孕患者移植不同胚胎数的临床研究

目的:探讨35岁以下IVF-ET患者减少移植胚胎数对妊娠结局的影响。方法:选取2002.03-2004.10移植3枚胚胎与移植2枚胚胎患者151例,分析两组的单胚种植率、临床妊娠率和多胎率等。结果:35岁以下助孕患者移植3枚胚胎组与移植2枚胚胎组的单胚种植率和临床妊娠率分别是29.82%和30.00%,51.32%和48.00%,均无显著性差异(P>0.05),多胎率分别是53.85%和25.00%,差异显著(P<0.05)。结论:35岁以下IVF-ET患者减少移植胚胎数可在不影响临床妊娠率的情况下,有效降低多胎妊娠的发生。     

过夜培养对冻融胚胎移植周期妊娠结局的影响

目的:探讨冻融胚胎移植周期中胚胎复苏时间对妊娠结局的影响。方法:回顾分析行冻胚移植(FET)的206对夫妇共248个周期,根据解冻时间的不同分为A组(对照组):排卵后2～3d或注射黄体酮3～4d后解冻,培养2h移植;B组(实验组):提前1d解冻,培养20h移植。比较各组间患者一般资料、复苏胚胎存活率、完整率、临床妊娠率、胚胎着床率和流产率。结果:A、B组间患者年龄、不孕年限、不孕原因、继发不孕所占比例、第3日冷冻胚胎比例、冷冻胚胎数、移植时内膜厚度、优胚数、胚胎复苏存活率、完整率、平均移植胚胎数均未见差异,而B组临床妊娠率和胚胎着床率显著高于A组(46.36%、25.29%vs30.88%、13.54%,P<0.05),组间流产率未见差异。过夜培养后有胚胎生长组临床妊娠率高于无生长组(49.47%vs26.67%,P>0.05)。结论:冻胚移植周期中提前解冻可以改善妊娠结局。     

黄体期个体化雌激素补充方案对IVF-ET治疗结局的影响

目的:探讨黄体期个体化添加不同剂量雌激素对体外受精-胚胎移植(IVF-ET)胚胎种植率和临床妊娠率的影响。方法:回顾性分析104个长方案控制性促排卵(COH)IVF-ET周期,根据其移植日血清E2水平下降幅度分为4组,A组:E2下降<30%,12个周期,单用黄体酮进行黄体期支持;B组:E2下降30%-39%,18个周期,黄体期支持采用黄体酮+3mg/d雌激素;C组:E2下降40%-49%,16个周期,D组:E2下降≥50%,58个周期,C组、D组患者黄体期支持采用黄体酮+4mg/d雌激素。结果:各组的取卵数目、受精率、卵裂率、优质胚胎数、内膜厚度和移植胚胎数相比差异均无显著性(P>0.05)。A组、B组、C组间胚胎种植率和临床妊娠率无统计学差异;而D组与其余3组比,胚胎种植率和临床妊娠率显著下降(P<0.05)。结论:①在长方案COH的IVF-ET中,当移植日血清E2水平下降幅度≥30%时黄体期支持补充雌激素可以改善胚胎种植率和临床妊娠率;②E2下降幅度大的患者可能需要增加雌激素的添加剂量。     

体外受精-胚胎移植短方案周期中移植胚胎数与临床妊娠结局的关系

目的:探讨体外受精-胚胎移植(IVF-ET)短方案周期中移植不同胚胎数对于临床妊娠率和多胎发生率的影响。方法:回顾性分析2002.01-2004.10期间进行第一次IVF-ET短方案周期治疗、年龄<35岁的患者1463例,将2002.01-2003.09间移植2个胚胎者为A组(n=84)、移植3个胚胎者为B组(n=716);2003.10-2004.10期间移植2个胚胎者为C组(n=663)。分析和比较3组的可移植胚胎数、胚胎种植率、临床妊娠率和多胎发生率等。结果:B组的可移植胚胎数(7.8±3.7)显著高于移植2个胚胎的A组(4.6±4.7)和C组(6.9±3.9),P均<0.05,胚胎种植率各组间无显著性差异(A:20.62%,B:14.88%,C:21.66%),P均>0.05。B组的临床妊娠率(42.96%)显著高于A组(25.93%)和C组(39.06%),P均<0.05;各组间的单胎妊娠率无显著性差异(A:27.19%,B:20.99%,C:29.42%,P均>0.05);A组(4.94%)和C组(10.06%)的多胎妊娠率均比B组(15.77%)显著降低,P<0.05。结论:IVF-ET短方案周期中,减少移植胚胎数可能会降低临床妊娠率,但移植2枚胚胎能够有效降低多胎妊娠的发生。     

单囊胚移植在全胚冷冻患者中的临床应用

目的探讨全胚冷冻后冻融胚胎移植(FET)周期第3天(D3)卵裂期胚胎,第5、6天双囊胚及单囊胚移植的临床效果分析。方法回顾性分析2010年1月至2012年12月在河南省人民医院生殖医学研究所行体外受精-胚胎移植(IVF-ET)的不孕患者,以全胚玻璃化冷冻FET周期的患者为研究对象,根据患者的意愿分为D3胚胎移植组(A组,n=456);双囊胚移植组(B组,n=106);单囊胚移植组(C组,n=402)。比较3组之间基本资料、IVF治疗的妊娠结局。结果与A组比较,B、C两组患者平均冷冻胚胎数、平均移植胚胎数少,移植周期率低,而种植率高,差异有统计学意义(P0.05);C组平均移植胚胎数亦少于B组,而B组临床妊娠率、最初周期妊娠率高于A、C两组,C组多胎率低于A、B两组,差异均有统计学意义(P0.05);C组早期流产率显著性低于A组,差异有统计学意义(P0.05)。结论对于全胚冷冻患者,当D3可利用胚胎个数≥4时,囊胚培养后玻璃化冷冻,择期FET周期选择性单囊胚移植是目前最佳的冷冻策略和最有益的临床处理方案。     

101例IVF-ET新鲜周期移植未见原核来源胚胎临床结局分析

目的评估体外受精-胚胎移植(in vitro fertilization-embryo transfer,IVF-ET)新鲜周期移植完全来源未见原核(non-pronuclear,0PN)胚胎的临床结局。方法回顾分析了2009年1月至2012年9月,在北京大学第三医院生殖中心接受IVF-ET治疗(包括常规IVF和常规ICSI),移植完全来源0PN的胚胎的新鲜移植周期共计101例。结果 101例新鲜移植完全来源于0PN胚胎中,99例移植分裂期胚胎,临床妊娠率为:9.09%(9/99),着床率:7.09%(9/127);截止到2013年1月,妊娠结局:1例胎停育,2例继续,6个健康婴儿出生。移植囊胚2例,没有妊娠。结论 IVF-ET新鲜周期中,在没有正常2PN受精来源的胚胎时,0PN来源的胚胎可用于移植。     

两种不同胚胎装载技术对体外受精-胚胎移植及冻融胚胎移植临床结局的影响

目的探讨两种不同胚胎装载技术对体外受精-胚胎移植(IVF-ET)和冻融胚胎移植(FET)临床妊娠率及胚胎种植率的影响。方法回顾性分析了543个新鲜胚胎移植周期及658个FET周期。根据移植时胚胎装载方法分为A组(含胚培养液体积周围空气体积)和B组(含胚培养液体积周围空气体积)。比较两种胚胎装载方法对妊娠结局的影响。结果新鲜周期中,B组的临床妊娠率(64.52%)显著高于A组(54.62%)(P0.05),种植率组间虽无统计学差异(P0.05),但B组明显高于A组。FET周期中卵裂胚移植B组的临床妊娠率(49.43%)明显高于A组(38.24%),但没有统计学差异(P0.05),B组(34.62%)的种植率显著高于A组(23.61%)(P0.05)。囊胚移植两组的妊娠率和种植率均没有统计学差异(P0.05),但B组比A组有增高的趋势。结论胚胎移植时含胚培养液体积周围空气体积会显著提高IVF-ET和FET的临床妊娠率和种植率。     

The Outcome of Cryopreserved Human Embryos After Intracytoplasmic Sperm Injection and Traditional IVF

Objective: Our objective was to analyze the outcome of cryopreserved embryos obtained after intracytoplasmic sperm injection (ICSI) and in vitro fertilization (IVF) in terms of survival rate, implantation rate (IR), total and clinical pregnancy rate (PR) in a retrospective, comparative study. Methods: Three hundred seventy-five IVF and 463 ICSI surnumerary cleaved embryos, frozen on Day 2 with 1,2-propanediol, were thawed. Results: Thirty-two percent of the thawed IVF embryos survived and 11 pregnancies (8 clinical) were obtained from 68 transfers (16.1%). Fourty-seven percent of the ICSI embryos survived, with 19 pregnancies (18 clinical) from 116 transfers (16.4%). The IR was 8.5% (8/94) in IVF cycles and 10.8% (20/185) in ICSI cycles. Conclusions: A significantly better survival rate of ICSI embryos was observed but with no difference in PR, preclinical, and clinical abortion rate, or IR.     

体外受精-胚胎移植周期透明带透亮致密患者的受精与临床结局

目的：探讨卵子透明带透亮致密患者行常规体外受精（IVF）或卵胞质内单精子显微注射（ICSI）后受精、胚胎发育情况及临床结局。方法：回顾性分析体外受精过程中卵子出现透明带透亮致密的43个周期,其中IvF周期27例,ICSI周期16例,比较受精率与正常受精比例、胚胎质量、临床妊娠结局。结果：27例IVF周期均未受精,行早期补救ICSI,其中23例完全不受精。补救后IVF总体受精率达64．83％,正常受精率59.32％;16例ICSI周期均受精,受精率和正常受精率分别为85．11％和79．01％,均显著高于IVF组（P〈0．05）。IVF组和ICSI组卵裂率分别为97．96％、95．65％,优质胚胎率分别为52．67％、43．75％,组间差异无统计学意义（P〉0．05）。IVF组妊娠率为37．04％,种植率为33．33％;ICSI组妊娠率为31．25％,种植率为25．00％,组间临床结局相近,无统计学差异（P〉0．05）。结论：透明带透亮致密患者的自然受精能力下降,需要采用ICSI方式授精。常规IVF受精失败后采用早期补救ICSI或直接行ICSI能明显改善透明带透亮致密患者的受精结局,但不能改善妊娠结局。     

Assessment of early cleaving in vitro fertilized human embryos at the 2-cell stage before transfer improves embryo selection

Objective: To determine the most viable embryos for transfer.

Design: Study 1: Preselection of early-cleaving 2-cell embryos for transfer. Study 2: Alternating weeks during which preselection was performed and not performed.

Setting: ART program, Birmingham Women’s Hospital, Birmingham, United Kingdom.

Patient(s): Patients undergoing IVF or ICSI cycles with transfer on day 2.

Intervention(s): Culture of all fertilized embryos.

Main Outcome Measure(s): Number of fertilized embryos cleaving to the 2-cell stage on day 1, embryo quality, implantation rates, and pregnancy rates.

Result(s): Patients with early-cleaving 2-cell embryos had significantly higher pregnancy and implantation rates (45 of 100 [45.0%] and 58 of 219 [25.5%], respectively) than did patients without early-cleaving 2-cell embryos (31 of 130 [23.8%] and 43 of 290 [14.8%], respectively). In weeks during which preselection was used, the overall pregnancy and implantation rates of the clinic improved.

Conclusion(s): The presence of early-cleaving 2-cell embryos improves a patient’s chance of achieving pregnancy. Use of more stringent embryo selection criteria can improve overall pregnancy rates.     

体外受精-胚胎移植中胚胎形态和发育时期与受孕结果的相关性

目的 :观察胚胎形态和发育速度对体外受精 -胚胎移植 ( IVF-ET)治疗结果的影响。方法 :35 4对夫妇进行的 371个 IVF-ET治疗周期 ( ICSI177个周期 ,常规 IVF 194个周期 ) ,根据移植胚胎形态等级将 IVF-ET周期分为 A、B、C、D 4组 ;再根据移植胚胎中有无≥ 4-细胞期胚胎将 IVF-ET周期分为≥ 4-细胞期胚胎组和 <4-细胞期胚胎 2组 ,分析移植胚胎形态等级和卵裂期对胚胎种植率和临床妊娠率的影响。结果 :371个周期共移植 112 5个新鲜胚胎 ,四个形态等级胚胎组之间种植率 ( P=0 .0 12 )和妊娠率 ( P=0 .0 0 6)差别有显著性。两个卵裂期胚胎组之间种植率 ( P=0 .0 0 7)和妊娠率 ( P=0 .0 10 )有显著性差异。 L ogistic回归分析发现胚胎质量 (形态等级 P=0 .0 0 38,卵裂期 P=0 .0 0 45 )是影响临床妊娠结果的因素。结论 :移植胚胎的形态和发育期与胚胎种植率及临床妊娠率密切相关     

The effect of endometrial thickness on the day of hCG administration on pregnancy outcome in the first fresh IVF/ICSI cycle

The aim of this study was to investigate the effect of endometrial thickness (EMT) on human chorionic gonadotropin (hCG) day on in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) outcome. A retrospective study was conducted on the clinical data of 756 patients in their first fresh IVF/ICSI cycle at the Wuxi Maternity and Child Health Hospital. Compared with the pregnancy failure group, the clinical pregnancy group had more transferable embryos and good-quality embryos and had a thicker endometrium (p?<?0.05). The endometrial pattern was not significantly different between the two groups. EMT was found to be an independent prognostic factor for clinical pregnancy (adjusted OR?=?1.25, 95% CI: 1.15–1.36, p?<?0.01). Seven hundred and fifty-six cycles were categorized into three groups upon EMT on the hCG day: group 1 (EMT??14?mm). Group1 had significantly lower clinical pregnancy, embryo implantation and live birth rates compared with group 2 and 3 (p?<?0.01), while there was no significant difference in either spontaneous abortion or multiple-birth rate among these three groups. It was concluded that EMT on the hCG day was associated with pregnancy outcome in the first fresh IVF/ICSI cycle. A higher clinical pregnancy rate could be achieved when EMT?≥?8?mm, and no adverse pregnancy outcome was observed when EMT?>?14?mm.     

Success rates following intracytoplasmic sperm injection are improved by using ZIFT vs IVF for embryo transfer

Purpose: The purpose of this study was to analyze whether the mode of embryo transfer (ZIFT vs IVF) affected the outcome in intracytoplasmic sperm injection (ICSI) cycles. Methods and Results: Eighty-two ICSI cycles (42 ZIFT and 40 IVF) were analyzed. Several variables, including patient age and weight, numbers of mature eggs collected, injected, and fertilized, fertilization rate, number of fertilized eggs obtained per cycle, numbers of zygotes/embryos transferred, clinical pregnancy rate, and implantation rate, were compared. Mean patient age and weight were identical. The mean number of mature eggs collected and injected and fertilization rate were significantly higher in the ZIFT group, however, the mean numbers of zygotes/embryos transferred were identical. The clinical pregnancy and implantation rates in ZIFT cycles (52.3 and 23.2% respectively) were significantly higher than in IVF cycles (17.5 and 9.7%). Conclusions: These data suggest that ZIFT is the more appropriate method for transfer of ICSI-derived embryos.     

Pronuclear stage cryopreservation after intracytoplasmic sperm injection and conventional IVF: implications for timing of the freeze

Objective: To compare clinical outcomes of frozen embryo transfers using cryopreserved pronuclear stage oocytes that had undergone either intracytoplasmic sperm injection (ICSI) or conventional IVF.

Design: Observational.

Setting: A tertiary referral reproductive medicine unit.

Patient(s): Couples undergoing either ICSI or conventional IVF from January 1, 1995 to December 31, 1997.

Intervention(s): Patients underwent a standard controlled ovarian hyperstimulation protocol and transvaginal ultrasound-guided oocyte retrieval. All normally fertilized (2PN) oocytes exceeding a specified embryo number designated for fresh transfer were immediately cryopreserved at the pronuclear stage. Our cryopreservation method included timing of the freeze according to pronuclear morphology. Subsequent frozen embryo thaw-transfer cycles were usually performed by thawing only the intended number of embryos for transfer.

Main Outcome Measure(s): Thaw survival rate, implantation rate, clinical pregnancy rate, delivery rate.

Result(s): Ninety-six thaw-transfer cycles (n = 72) and 93 thaw-transfer cycles (n = 67) were undertaken in patients who had previously undergone conventional IVF or ICSI, respectively. Embryo thaw survival rates (IVF, 90.4%; ICSI, 91.1%) were similar. Clinical pregnancy (IVF, 40.6%; ICSI, 44.1%) and delivery (IVF, 36.4%; ICSI, 39.8%) rates per transfer, as well as implantation (IVF, 19.1%; ICSI, 19.9%) rates, were also similar. There were only four clinical pregnancy losses in both groups.

Conclusion(s): Embryo thaw survival is similar for cryopreserved pronuclear stage oocytes derived from ICSI and conventional IVF. Clinical pregnancy, implantation and delivery rates were also similar for the two groups. In addition, there was no increase in the rate of pregnancy loss in ICSI patients after frozen embryo transfers.     

Cleavage speed and implantation potential of early-cleavage embryos in IVF or ICSI cycles

We examined whether there is a correlation among early embryo cleavage, speed of cleavage, and implantation potential for in-vitro fertilization (IVF) treatment and intracytoplasmic sperm injection (ICSI). This retrospective study examined 112 cycles of IVF and 82 cycles of ICSI in patients less than 40 years of age. Early cleavage was defined as embryonic mitosis occurring 25–27 h after insemination. These day-3 embryos were then grouped according to cleavage speed (rapid, normal, and slow) and morphological quality (good or poor). A larger proportion of early-cleavage embryos developed normally compared to non-early-cleavage embryos (IVF: 69.1 % vs. 47.1 %, respectively; ICSI: 63.0 % vs. 45.6 %, respectively). The early-cleavage embryos also produced more good quality embryos than the non-early-cleavage embryos (IVF: 80.2 % vs. 56.4 %, respectively; ICSI: 73.4 % vs. 59.4 %). The implantation rate was significantly higher with early-cleavage embryos in both IVF (42.9 % vs. 19.7 %) and ICSI (48.1 % vs. 24 %). These results indicate that early-cleavage embryos have a higher rate of normal development and develop into better quality embryos on day 3, resulting in more and higher quality embryos to choose from for day-3 embryo transfer. Thus, early cleavage may be a useful criterion when selecting embryos for IVF or ICSI.     

Effect of ICSI on subsequent blastocyst development and pregnancy rates

Purpose: To investigate whether ICSI (intracytoplasmic sperm injection)results in decreased blastocyst formation and pregnancy compared to IVF (in vitro fertilization). Methods: We performed a retrospective analysis of blastocyst transfer (BT)offered routinely to patients under age 40 with three 8-cell embryos on day 3 and compared IVF to ICSI cycles. Sequential media were used with P1 until day 3, then Blastocyst Medium until day 5/6. Results: There were 131 IVF and 75 ICSI cycles. There was no difference in age, number of oocytes, zygotes, 8-cell embryos, blastocysts on days 5 and 6, or embryos transferred. Progression to blastocyst was similar (78% for IVF and 73% for ICSI) as was the viable pregnancy rate (51.4% for IVF and 55% for ICSI). No cycles failed to form blastocysts. Conclusions: The progression to blastocyst and the likelihood of conceiving aviable pregnancy were unaltered by ICSI. Thus it seems appropriate for programs to offer BT to patients undergoing ICSI using the same inclusion criteria applied to their IVF patients.     

IVF/ICSI周期中不同移植方案的临床结局及经济学分析

目的:探讨IVF/ICSI周期中第三天可利用胚胎为5枚以上的患者选择不同移植方案的临床结局及经济学评价。方法:选取2014年1月至2015年12月于郑州大学第三附属医院生殖医学中心行IVF/ICSI-ET治疗不孕症的1400例周期,按移植方案分为3组:移植D3胚胎(A组,1109个周期),非选择性囊胚移植组(B组,160个周期),选择性(单)囊胚移植组(C组,131个周期)。分析各组的临床结局和经济学成本。结果:A组患者的获卵数和种植率均明显低于B组和C组,差异均有统计学意义(P0.05);3组患者的2PN受精率、卵裂率、可移植胚胎率、优质胚胎率、临床妊娠率和流产率比较,差异均无统计学意义(P0.05)。A组患者的多胎率明显高于B组和C组(P均=0.000),且B组明显高于C组(P=0.000)。C组患者移植的成本效果比最小。结论:3组移植方案的临床妊娠率相似;选择性单囊胚移植明显提高胚胎种植率,降低多胎率,治疗成本效果比最小,是相对最佳的移植方案。