子宫及内膜血流参数与冻融胚胎移植妊娠结局的关系

目的：探讨子宫及子宫内膜血流动力学变化对冻融胚胎移植（frozen-thawed embryo transfer,FET）妊娠结局的影响。方法：310例FET患者按照临床妊娠结局分为妊娠组（153例）和非妊娠组（157例）。所有患者均于内膜转化日及移植前1 d,通过彩色多普勒超声诊断仪监测子宫内膜厚度、子宫内膜容积（V）、子宫内膜及内膜下血流相关参数。结果：转化日妊娠组子宫动脉搏动指数（PI）、收缩期峰值流速（PSV）与舒张末期流速（EDV）比值（S/D）低于非妊娠组,子宫内膜容积高于非妊娠组（P＜0.05）;移植前日妊娠组PI、阻力指数（RI）均低于非妊娠组,血流指数（FI）、子宫内膜容积均高于非妊娠组（P＜0.05）;子宫内膜容积的ROC曲线下面积为0.637,显著大于参考下面积（P＜0.01）。移植前日子宫动脉PSV、EDV、RI较转化日低,而子宫内膜FI、子宫内膜容积较转化日高（P＜0.05）。子宫动脉RI、PI及子宫内膜容积与子宫内膜厚度的相关系数分别为-0.431、-0.775及0.796（P＜0.01）。据RI值分为0.70～0.85组和0.86～0.95组,妊娠率分别为53.18%、40.00%,0.70～0.85组妊娠率较高（P＜0.05）。结论：移植前日PI、RI较低者易获得妊娠。子宫内膜容积对子宫内膜容受性有一定的预测价值。PI、RI可能通过改变子宫内膜厚度而影响子宫内膜容受性。     

经阴道彩色多普勒超声在IVF-ET中对子宫内膜容受性的评估价值

目的:探讨经阴道彩色多普勒超声(TVCD)检测子宫动脉血流动力学、内膜厚度及形态变化能否评估移植前子宫内膜容受性。方法:回顾性分析119个体外受精一胚胎移植(IVF-ET)周期,TVCD检测注射绒毛膜促性腺激素(hCG)日和取卵日子宫动脉血流的搏动指数(PI)和阻力指数(RI)、子宫内膜厚度和形态,分析各个参数变化与临床妊娠的关系。结果:119个IVF-ET周期,临床妊娠率为33.61%(40/119)。妊娠组在hCG日PI和RI显著低于非妊娠组,取卵日妊娠组PI显著低于非妊娠组,RI无差异,hCG日妊娠组内膜厚度显著大于非妊娠组,内膜厚度<8mm者无一例妊娠,妊娠组内膜形态以多层为主。结论:hCG日子宫动脉PI和RI越低,血管阻力也越低,子宫血流灌注良好,获得妊娠机会较大,8mm以上多层内膜适宜胚胎着床,即TVCD对评估子宫内膜容受性有重要意义。     

子宫纵隔不孕症患者行宫腔镜子宫纵隔切除术后IVF/ICSI结局分析

目的：探讨宫腔镜子宫纵隔切除术（transcervical resection of septum,TCRS）对子宫纵隔不孕症患者行体外受精（in vitro fertilization,IVF）/卵细胞质内单精子注射（intracytoplasmic sperm injection,ICSI）结局的影响。方法：回顾性分析并比较2013年1月—2020年7月在南京大学医学院附属鼓楼医院生殖医学中心进行IVF/ICSI的183例子宫纵隔不孕症患者的治疗结局。其中156例行TCRS后IVF/ICSI(TCRS组),而27例患者拒绝TCRS直接行IVF/ICSI（未行TCRS组）。结果：共有247个移植周期,其中新鲜胚胎移植周期100个,临床妊娠率64.0%,活产率49.0%;冻融胚胎移植周期147个,临床妊娠率51.0%,活产率40.1%。新鲜胚胎移植周期和冻融胚胎移植周期中TCRS组与未行TCRS组的胚胎种植率、临床妊娠率、流产率、早产率、活产率及单胎妊娠新生儿出生体质量比较,差异均无统计学意义（均P>0.05）。新鲜胚胎移植周期中,与TCRS组比较,未行TCRS组的双胎妊娠率高（...     

Complementary roles of hysteroscopy and saline infusion hysterosonography in uterine cavity assessment before in vitro fertilization

ObjectiveThis comparative study was designed to assess the role of saline infusion hysterosonography in refining the diagnosis of uterine cavity abnormalities diagnosed by hysteroscopy in infertile, asymptomatic women before in vitro fertilization/intra-cytoplasmic sperm injection (IVF/ICSI) treatment.MethodsOne hundred and twenty four asymptomatic infertile women were included in this study before IVF/ICSI treatment. Hysteroscopy was done as routine procedure for uterine cavity assessment before the first attempt of IVF/ICSI treatment. Patients agreed to have an ultrasound assessment of uterine cavity with the use of saline as the contrast medium (Saline infusion hysterosonography, SIHS) beside the hysteroscopic assessment. Both hysteroscopy & SIHS procedures were scheduled post menstrual period in the early-mid follicular phase of a cycle of the same menstrual cycle, 1–3 months before starting the IVF/ICSI treatment.ResultsThe uterine cavity abnormalities were detected in 40.3% of the patients included in this study before IVF/ICSI treatment (17.7% endometrial polyps, 10.5% sub-mucous fibroid, 4.8% uterine septum, 3.2% uterine adhesions, 2.4% endometrial hyperplasia and 1.6% thin or atrophic endometrium). In this study, the hysteroscopy was more sensitive (98.0% versus 96.2%), more specific (100.0% versus 98.7%) and more accurate (99.2% versus 97.6%) than SIHS, and the hysteroscopy also had higher predictive values (100% versus 98% positive predictive value; 98.7% versus 97.4% negative predictive value) than SIHS during uterine cavity assessment before IVF/ICSI treatment.ConclusionsInfertile asymptomatic women should be screened for possible uterine cavity abnormalities before IVF/ICSI; SIHS is a simple, well tolerated procedure that can be used as a complementary tool to confirm the diagnosis of uterine cavity abnormalities detected by hysteroscopy.     

Comparative study on risk for birth defects among infants after in vitro fertilization and intracytoplasmic sperm injection

This large retrospective study was conducted to compare the risk for birth defects among infants conceived by in vitro fertilization (IVF) with that among infants conceived by intracytoplasmic sperm injection (ICSI) and to explore the effect of frozen embryo transfer (FET) on the risk for birth defects among infants born by IVF and ICSI. All patients who received assisted reproductive technology (ART) treatment and who underwent childbirth during the period January 2005–August 2017 were included in this study. There were 18,221 births after ART included in the analysis; of these births, 12,649 were conceived by IVF, and 5,572 were conceived by ICSI. In the study, the prevalence of any birth defect in singleton infants was 1.15% with the use of IVF and 1.38% with the use of ICSI, and that in twin infants increased to 2.74% by IVF and 2.58% by ICSI. However, no significant difference between IVF and ICSI was found among all infants, singleton births or twin births. Additionally, in assessing ART infants born after FET, we did not detect a difference in the risk for birth defects between infants born by IVF and those born by ICSI. These results indicate that among the entire cohort of children conceived from ART and among the children conceived from FET, the risk for birth defects after ICSI is similar to that after IVF.Abbreviations: IVF: in vitro fertilization; ICSI: intracytoplasmic sperm injection; FET: frozen embryo transfer; ART: assisted reproductive technology; ET: embryo transfer; BMI: body mass index; OHSS: ovarian hyperstimulation syndrome; CMOH: Chinese Ministry of Health; ICD-10: International Classification of Diseases, 10^th edition; PTB: preterm birth; OR: odds ratio; aOR: adjusted odds ratio; CI: confidence interval     

不同体外受精方式对胚胎玻璃化冷冻复苏的影响

目的:观察常规体外受精和卵胞浆内单精子注射两种不同体外受精方式对胚胎玻璃化冷冻复苏的影响。方法:将移植冷冻复苏胚胎的患者(均为玻璃化法)分为两组。IVF组:新鲜周期采取常规体外受精方式而获得的胚胎;ICSI组:新鲜周期采取卵胞浆内单精子注射方式受精而得到的胚胎;比较两组的不孕类型、不孕原因以及冷冻复苏周期的复苏率、着床率、临床妊娠率和流产率等。结果:IVF组和ICSI组的复苏率、着床率、临床妊娠率差异无统计学意义(P>0.05),ICSI组的流产率明显高于IVF组但差异无统计学意义(P>0.05),IVF组和ICSI组原发不孕所占比例、继发不孕所占比例差异有统计学意义(P<0.05),IVF组和ICSI组男方因素不孕所占比例、输卵管因素不孕所占比例差异有统计学意义(P<0.05)。结论:ICSI不影响胚胎玻璃化冷冻周期的复苏率、着床率及临床妊娠率,ICSI后胚胎玻璃化冷冻复苏流产率有升高的趋势,ICSI体外受精方式主要用于原发不孕患者以及男方因素导致的不孕患者。     

In-vitro-Fertilisation und intrazytoplasmatische Spermieninjektion

Since the delivery of the first baby conceived via in vitro fertilization (IVF) in 1978, IVF has become a standard procedure in sterility treatment. In Germany, 78,000 IVF/intracytoplasmic sperm injection (ICSI) cycles are performed annually with a delivery rate per embryo transfer of about 20?%. The cumulative delivery rate after three trials is more than 50?%. The main medical problems are the high rates of multiple pregnancies of more than 20?%, which carry an increased risk for mothers (preeclampsia) and children (preterm delivery, lung immaturity, brain problems). Also singleton babies after IVF are more often too small (small for gestational age, SGA) and delivered preterm. As a result, proper counselling is necessary. New laboratory methods have increased the success rate. Cryopreservation techniques such as vitrification are standard for freezing oocytes, pronuclear-stage oocytes and embryos if they are not needed during the current treatment cycle. Continuous observation of embryos by time-lapse imaging helps to identify the best embryos for transfer. The current legislation in the German embryo protection act (Embryonenschutzgesetz) is the main problem. It is unclear how many fertilized oocytes can be cultured to achieve a transfer of one to three embryos. The prohibition of oocyte donation and surrogacy are not comprehensible from a medical, psychological, and ethical point of view. Reimbursement of publicly insured patients is restricted in comparison with other European countries. Married couples receive half of the payment for three IVF/ICSI cycles; non-married couples receive no payment at all.     

冻融胚胎移植周期中不同辅助生殖技术助孕方式和移植不同发育阶段胚胎对出生性别比的影响

目的:探讨冻融胚胎移植（frozen-thawed embryo transfer, FET）周期中不同辅助生殖技术（assisted reproductive technology, ART）助孕方式和移植不同发育阶段胚胎对新生儿性别的影响。方法:回顾性队列研究分析2010年4月至2018年10月期间于广州市妇女儿童...     

体外受精-胚胎移植术移植日子宫内膜容受性的超声学研究

目的:探讨体外受精-胚胎移植(IVF-ET)/卵泡浆内单精子显微注射(ICSI)周期胚胎移植日胚胎种植率的影响因素。方法:将实施IVF/ICSI的112个周期根据助孕结局分为妊娠组和非妊娠组,比较两组的E2、P、E2/P及子宫内膜厚度/形态、宫腔深度,并与自然周期模拟移植日子宫内膜厚度/形态、宫腔深度进行自身对照研究。结果:两组超排卵周期胚胎移植日宫腔深度、内膜厚度均显著高于自然周期模拟移植日(P0.001);两组胚胎移植日C型内膜的比率均高于模拟移植日(P0.05),而妊娠组与非妊娠组之间宫腔深度、内膜厚度、C型内膜比率无统计学意义;妊娠组E2、E2/P显著低于非妊娠组(P0.05)。结论:超排卵治疗改变了子宫容积和内膜形态,通过生殖激素的变化而影响IVF/ICSI的妊娠结局。     

The effects of fertilization mode,embryo morphology at day 3, and female age on blastocyst formation and the clinical outcomes

Abstract

The aim of this study was to evaluate the influence of in vitro fertilization (IVF) versus intracytoplasmic sperm injection (ICSI), fertilization mode embryonic morphology at day 3, and female age on blastocyst development, on the clinical outcomes of pregnancy after blastocyst transfer. A total of 471 cycles were retrospectively investigated. The rates of blastocyst formation and of good blastocyst morphology were higher in IVF than in ICSI cycles but there were no significant differences in the clinical pregnancies or in the miscarriage rates. The rates of formation of blastocyst and of blastocysts with good morphology were significantly higher from good-morphology embryos than from poor-morphology embryos. Nevertheless, 16.9% of the poor-morphology embryos reached the blastocyst stage. The total rates of blastocyst formation, and rates of clinical pregnancy and implantation were statistically similar in the age <35, 35–39, and >39 year groups, although tending to decrease with increasing age. When equal numbers of embryos were transferred on day 3, the rates of clinical pregnancy and implantation after blastocyst transfer were significantly higher in the <35 year age group than in the 35–39 and >39 year age groups, which were not significantly different. The miscarriage rates after embryo or blastocyst transfers were not statistically different in groups of similar age. Therefore, extended embryo culture up to the blastocyst stage could be implemented for women aged younger than 35 years to increase the pregnancy rate. For older women, transfer and vitrification of available embryos at day 3 and extended culture of morphologically poor embryos to the blastocyst stage for cryopreservation may improve the clinical outcome.     

经阴道彩色多普勒超声对孕早期习惯性流产的子宫血流动力学变化研究

目的:经阴道彩色多普勒超声观察早孕期各种习惯性流产的子宫动脉血流动力学变化,研究子宫动脉血流阻力指数(RI)值、搏动指数(PI)值与习惯性流产的关系。方法:经阴道彩色多普勒超声观察黄体功能不全引起的习惯性流产20例,黄体功能正常习惯性流产20例和正常群组20例各妊娠早期子宫动脉血流,对照统计各组子宫动脉RI值、PI值的相关关系及各组之间子宫动脉RI值、PI值的差异。结果:正常群组子宫动脉RI值、PI值下降,RI均值为0.792 0±0.024 4、PI均值为1.985 5±0.275 6。黄体功能正常组子宫动脉RI值、PI值增高16例,无变化或下降4例,RI均值为0.838 0±0.031 8、PI均值为2.503 5±0.268 6。黄体功能不全组子宫动脉RI值、PI值增高17例,无变化或下降3例,RI均值为0.839 0±0.032 5、PI均值为2.485 5±0.235 0。统计分析结果,正常组与黄体功能正常组、正常组与黄体功能不全组子宫动脉RI值、PI值差异有统计学意义(P<0.01),黄体功能正常组和黄体功能不全组子宫动脉RI值、PI值差异无统计学意义(P>0.05)。结论:各种原因引起的习惯性流产患者妊娠早期,无论是黄体功能不全或黄体功能正常,都可见子宫动脉RI值、PI值增高,子宫动脉RI值、PI值增高是习惯性流产发生过程中的一种病理表现,子宫动脉RI值、PI值增高是导致孕早期习惯性流产的主要发病因素。     

IVF/ICSI中卵巢基质动脉血流参数与卵巢反应性及妊娠结局的关系

目的:探讨体外受精/卵泡浆内单精子注射-胚胎移植(IVF/ICSI-ET)过程中卵巢基质动脉血流参数与卵巢反应性及临床妊娠结局的关系。方法:选取IVF/ICSI-ET的1 031例不孕症妇女按获卵数(低反应组、正常反应组)及临床妊娠结局(妊娠组、非妊娠组)分组,促性腺激素(Gn)启动日超声探测卵巢收缩期血流速度(PSV)、舒张期血流速度(EDV)、血管阻力指数(RI)、PSV/EDV(S/D),比较各组血流参数的差异。结果:①卵巢低反应组较正常反应组PSV、EDV降低(P<0.05);②卵巢基质动脉各血流参数在妊娠组与非妊娠组无统计学差异(P>0.05)。结论:卵巢基质动脉血流PSV、EDV与卵巢反应性密切相关,与妊娠结局无关,是预测卵巢反应性的有效指标。     

辅助生殖技术结局的临床相关因素分析

目的:回顾分析辅助生殖技术(IVF/ICSl)中妊娠结局,并对临床相关因素及其对妊娠结局的影响进行分析。方法:收集我院生殖中心2004年1月1日~6月31日176例患者189个辅助生殖周期治疗的临床资料,进行整理统计和分析。结果:种植率、生化妊娠率及临床妊娠率分别为22.97%、33.53%、30.64%;冻融胚胎移植临床妊娠率23.08%,单周期累计临床妊娠率32.37%;妊娠者较未妊娠者年龄轻(P<0.05);年龄≤35岁组较年龄>35岁组妊娠率高(分别为48.98%和11.11%,P<0.05);妊娠史对治疗结局有一定影响。结论:分析IVF/ICSI中影响妊娠结局的临床相关因素将提高种植率和妊娠率。     

1.3mg达菲林降调节在IVF/ICSI中的临床应用

目的:探讨1.3mg达菲林长方案降调节在体外受精-胚胎移植(IVF-ET)或单精子卵胞浆显微注射(ICSI)中的作用。方法:98例接受IVF/ICSI治疗的不孕症患者101个周期,均采用黄体中期1.3mg达菲林长方案降调节,致垂体完全降调后加用促性腺激素(Gn),当患者有3个以上卵泡且直径≥1.8cm时,肌肉注射绒毛膜促性腺激素(hCG),36小时取卵后行IVF或ICSI,48小时后行胚胎移植(ET)。结果:97个周期完全达降调标准。除3个周期被过度抑制取消周期外,其余98个周期hCG日无一例出现隐匿性促黄体生成素(LH)峰。Gn天数11.28±1.91,获卵数12.53±6.15,平均IVF受精率81.64%,ICSI受精率87.03%,卵裂率97.58%,移植胚胎数2.44±0.53,胚胎着床率21.41%,临床妊娠率39.80%,单胎率74.36%,多胎率20.51%,流产率15.38%,异位妊娠发生率5.13%,卵巢过度刺激综合征(OHSS)发生率1.02%。结论:1.3mg达菲林降调节在IVF/ICSI中的应用结果是理想的。     

Comparison of uterine artery blood flow with levonorgestrel intrauterine system and copper intrauterine device

Background

As a contraceptive method, we investigated whether the levonorgestrel-releasing intrauterine system (LNG-IUS) has any effect on uterine artery blood flow when compared with copper intrauterine device (IUD).

Study Design

Sixty women with copper IUD and 60 women with LNG-IUS were included in the study. The age, gravidity, parity, body mass index (BMI) and menstrual flow pattern using a pictorial chart were recorded. All women were assessed by ultrasonography at the preinsertion period and 1 year after insertion. The pulsatility and resistance indices (PI and RI, respectively) of the uterine artery and endometrial thickness were evaluated in the preinsertion and postinsertion periods.

Results

In copper IUD users, preinsertion and postinsertion ultrasonographic assessments were not significantly different. However, postinsertion RI was significantly higher compared with preinsertion RI in LNG-IUS users (p=.001). The PI was also increased 1 year after insertion, but it did not reach statistically significant levels (p=.08). Endometrial thickness was also significantly decreased in the postinsertion period in women with LNG-IUS (p=.04).

Conclusion

The significant increase in uterine artery RI in LNG-IUS users 1 year after insertion might be due to its local progestational effects. It might also indicate the mechanism of the LNG-IUS in reducing menstrual blood flow.     

反复着床失败的治疗现状与进展

反复着床失败(repeated implantation failure,RIF)是指经历多个体外受精/胞浆内单精子注射(IVF/ICSI)周期并移植了多枚优质胚胎而出现的临床妊娠失败,其原因多而复杂,母体方面因素包括子宫解剖结构异常、子宫内膜容受性低及母胚免疫异常等多个方面,胚胎方面因素则包括胚胎遗传物质缺陷、胚胎孵化不良、胚胎培养环境不良、胚胎移植操作不当。如何针对RIF的原因进行正确的干预是改善预后的关键,对于解剖结构异常可采用手术进行矫正,为提高子宫内膜容受性可采用增加内膜厚度、抑制频繁宫缩、改善凝血功能、调整免疫状态、刺激内膜应答等,胚胎方面则需要筛选优质胚胎、辅助胚胎孵化、改进移植技巧。现就各种因素RIF的相应干预措施及进展进行归纳和综述。     

经阴道彩色超声监测子宫内膜厚度及子宫血流动力学在不孕症患者中的应用

目的:探讨经阴道彩色超声监测不孕症患者子宫内膜厚度及子宫血流动力学的临床意义。方法:选择该院门诊收治的不孕症女性患者85例(不孕症组)和同期健康志愿者60例(对照组),在月经周期第8～11天、第13～16天、第20～24天时,应用经阴道彩色超声检测,比较两组子宫内膜厚度和子宫动脉收缩期峰值血流速度(PSV)、搏动指数(PI)和阻力指数(RI)。结果:在月经周期第8～11天、第13～16天、第20～24天,不孕症组的子宫内膜厚度均小于对照组,差异具有统计学意义(P<0.05);子宫动脉的PSV较对照组缓慢,PI、RI较对照组增高,差异有统计学意义(P<0.05)。结论:经阴道彩色多普勒超声检测子宫内膜厚度及血流动力学参数,可较好地了解不孕症患者子宫内膜容受性状态。     

LIF and TNF alpha concentrations in embryo culture media are predictive for embryo implantation in IVF

ObjectiveThere is strong evidence that the cytokines leucemia inhibitory factor (LIF) and tumor necrosis factor (TNF) alpha are related to embryo development and implantation. The aim of this study was to determine the levels of LIF and TNF alpha in embryo culture media and to assess its relationship to the outcome of in-vitro fertilization and embryo transfer.MethodsA total of 99 patients were included in this prospective trial and underwent either IVF or ICSI procedure. A total of 865 oocytes were collected. Embryos were cultured in sequential media until day 5. A standardized morphology evaluation of all embryos, including a detailed pronuclear scoring, was performed daily during this period followed by the replacement of one or two selected embryos. Collected embryo culture fluids of days 3 and 5 were analysed for LIF and TNF alpha on days 3 and 5.ResultsMean TNF alpha concentration in culture media on day 3 was 0.54 and 0.37 pg/mL on day 5 and was significantly lower in women conceiving than in not conceiving (0.43 pg/mL versus 0.59 pg/mL on day 3). Mean LIF concentration on day 3 was 31.5 pg/mL and 35.5 pg/mL on day 5 and was significantly higher in women conceiving (56.2 pg/mL versus 22.2 pg/mL on day 3).ConclusionsThe results indicate that LIF could have a function in early embryogenesis and as a factor required for embryo implantation. High TNF alpha concentrations seem to be predictive of implantation failure.     

FERTILIZATION RATES OF SMALL-HEAD SPERM IN CONVENTIONAL IVF AND ICSI

Five men produced 23 ejaculates in 23 assisted reproductive technology cycles for semen analysis. In 11 of the 14 ICSI cycles and in 5 of the 9 IVF cycles, small-head sperm were found in more than 70% of the cells, having a length of <3.5 µm and a width of <2 µm. In 6 of the 14 ICSI cycles, the embryologist who performed the ICSI was not alerted to the presence of small-head sperm. Subsequent fertilization rate was significantly lower than a) the fertilization rate of the remaining 5 ICSI cycles that acted as a control, in which the embryologist was alerted to the presence of small-head sperm, and b) was lower than the 3 ICSI cycles with normal sperm head ( p <. 05). The 8 cell embryo and blastocyst rates in the former group were also decreased, although not significantly, compared to the latter groups. Likewise, in the 5 IVF cycles with small-head sperm, the fertilization rate was significantly lower than in the 4 IVF with normal sperm head ( p <. 05). Embryologists should be alerted when a high percentage of small-head sperm are detected during routine semen analysis because they may be associated with reduced fertilization and embryo outcome.     

原因不明性不孕患者同胞卵母细胞行IVF和ICSI结果比较

目的:探讨原因不明性不孕患者行常规IVF、ICSI对受精、受精后胚胎的影响。方法:回顾性分析2005年6月~2007年12月间非男性因素不孕的夫妇采用同胞卵和同一份精液行常规IVF和ICSI的受精情况、受精后胚胎的发育潜能。结果:50例原因不明性不孕患者中11例常规IVF受精完全失败,IVF完全受精失败率为22%,ICSI组无完全受精失败。IVF、ICSI均受精组ICSI受精率(82%)高于常规IVF(79%),差异无显著性意义(P>0.05)。均受精组和仅ICSI受精组患者的年龄、不孕年限、基础FSH、BMI以及精液标本分析均无显著性差异。比较移植不同受精方式的胚胎着床率、妊娠率差异均无显著性意义。结论:对于原因不明性不孕的夫妇选择施行IVF-ICSI split既可避免受精失败所致的周期取消,保证一定的成功率,又可为下一次施行IVF时决定受精方式提供依据,值得推广。尚需要大样本研究原因不明性不孕患者年龄、不孕年限和受精完全失败的关系,为选择ICSI提供依据。