体外受精与胚胎移植前输卵管积水处理方式的探讨

目的:探讨体外受精与胚胎移植(IVF-ET)前输卵管积水的不同处理方式对IVF-ET结局的影响。方法:回顾分析2002年1月至2004年12月因输卵管因素不孕接受IVF-ET治疗的346个治疗周期的资料。按输卵管的情况分为4组,A组:输卵管阻塞,未发现输卵管积水者,共151个治疗周期;B组:IVF-ET前输卵管积水未行手术治疗者,共73个治疗周期;C组:IVF-ET前输卵管积水行输卵管伞端造口术者,共43个治疗周期;D组:IVF-ET前输卵管积水行输卵管切除术者,共79个治疗周期。结果:各组的临床妊娠率分别为48.34%、21.92%、34.88%、44.30%,异位妊娠率分别为1.37%、12.50%、6.67%、2.86%,种植率分别为20.36%、5.87%、12.28%、19.38%,B组的临床妊娠率及种植率较A组、D组明显降低,B组、C组的异位妊娠率均较A组、D组升高。结论:输卵管积水对IVF-ET的结局有负面影响,IVF-ET前输卵管积水,先行手术治疗,可改善IVF-ET的结局。较之输卵管造口术,输卵管切除术可减少异位妊娠的发生率及输卵管积水的复发率。     

Artificial intelligence model to predict pregnancy and multiple pregnancy risk following in vitro fertilization-embryo transfer (IVF-ET)

ObjectiveTo decrease multiple pregnancy risk and sustain optimal pregnancy chance by choosing suitable number of embryos during transfer, this study aims to construct artificial intelligence models to predict the pregnancy outcome and multiple pregnancy risk after IVF-ET.Materials and methodsFrom Jan 2010 to Dec 2019, 1507 fresh embryo transfer cycles contained 20 features were obtained. After eliminating incomplete records, 949 treatment cycles were included in the pregnancy model dataset and 380 cycles in the twin pregnancy model dataset. Six machine learning algorithms were used for model building based on the dataset which 70% of the dataset were randomly selected for training and 30% for validation. Model performances were quantified with the area under the receiver operating characteristic curve (AUC), accuracy, specificity, and sensitivity.ResultsModels built with XGBoost performed best. The pregnancy prediction model produced accuracy of 0.716, sensitivity of 0.711, specificity of 0.719, and AUC of 0.787. The multiple pregnancy prediction model produced accuracy of 0.711, sensitivity of 0.649, specificity of 0.740, and AUC of 0.732.ConclusionsThe AI models provide reliable outcome prediction and could be a promising method to decrease multiple pregnancy risk after IVF-ET.     

A matched controlled study to evaluate the efficacy of acupuncture for improving pregnancy rates following in vitro fertilization-embryo transfer

PURPOSE: To determine if acupuncture performed during the follicular phase and luteal phase but not on the day of embryo transfer could improve the outcome following IVF-ET compared to controls. METHODS: Acupuncture was started biweekly from day 5 of the follicular phase through the luteal phase but not on the day of the transfer. Controls were matched according to age, same number of previous failed IVF cycles and same type of embryo transfer (fresh or frozen). RESULTS: The clinical and ongoing (delivered pregnancy rates per transfer) for 32 women undergoing IVF-ET and acupuncture was 40.6% and 37.5%, respectively vs 53.1% and 43.7% for controls. The median number of previous failed IVF cycles was three. CONCLUSIONS: Acupuncture performed twice weekly during the follicular and luteal phase does not seem to improve pregnancy rates following IVF-ET.     

Different influence of incongruent follicular development on in vitro fertilization–embryo transfer and gamete intrafallopian transfer pregnancy rates

Objective: To compare the influence of incongruent (asymmetric) follicular development on treatment outcome in IVF-ET and GIFT cycles.

Design: A retrospective comparative study.

Setting: Tertiary referral center for infertility.

Patient(s): Five hundred forty-three consecutive assisted reproduction cycles (428 IVF-ET and 115 GIFT) in 422 infertile patients.

Intervention(s): Controlled ovarian hyperstimulation (COH) and IVF-ET or GIFT.

Main Outcome Measure(s): The incongruity ratio as a parameter of the asymmetry in follicular development and pregnancy rate (PR).

Result(s): For GIFT cycles, the PRs were 37.8% and 15.7% in cycles with congruent and incongruent follicular development, respectively. However, for IVF-ET cycles, the PR was not affected by incongruent follicular development: 28.2% and 29.0%, respectively. An inverse relationship was observed between the degree of incongruity and the estimated probability of pregnancy in GIFT cycles but not in IVF-ET cycles. Neither the side of the dominant ovary nor the degree of incongruity were consistent in consecutive cycles.

Conclusion(s): Incongruent follicular development during COH has a significantly negative influence on the outcome of GIFT cycles but not on the outcome of IVF-ET cycles. The reason for this difference is not clear. We recommend considering IVF-ET instead of GIFT if incongruent follicular development occurs.     

Tubal ectopic pregnancy after in vitro fertilization and embryo transfer: a role for proximal occlusion or salpingectomy after failed distal tubal surgery?

OBJECTIVE: To assess predisposing factors to tubal pregnancy after in vitro fertilization-embryo transfer (IVF-ET). DESIGN: Retrospective analysis of 891 ET cycles. SETTING: University-based IVF program. PATIENTS, PARTICIPANTS: All ET cycles performed in the study period were included; the indication for IVF was tubal factor in 640 (72%) and other (nontubal) factors in 251 (28%) cycles. INTERVENTIONS: None. MAIN OUTCOME MEASURE: Observing a higher than expected number of tubal pregnancies in our program; we examined subgroups to determine those at highest risk. RESULTS: Tubal pregnancies comprised 12% of clinical pregnancies in the tubal factor group but only 2.6% in the cycles nontubal factor group (P less than 0.05). Of 640 ET cycles in the tubal factor group, 359 were performed in patients who had prior tubal reconstructive surgery; tubal pregnancies comprised 15.6% of the clinical gestations in this subgroup. In the remainder of the tubal factor group (no prior tubal surgery), 281 ET cycles yielded a tubal pregnancy rate of only 5.5% (P less than 0.05). CONCLUSIONS: Women with prior reconstructive surgery for distal tubal disease are at highest risk of developing tubal pregnancy after IVF.     

Results of prednisolone given to improve the outcome of in vitro fertilization-embryo transfer in women with antinuclear antibodies

OBJECTIVE: To evaluate the association of antinuclear antibodies (ANA) with outcome of in vitro fertilization-embryo transfer (IVF-ET) as well as the effect of short-term immunosuppression with prednisolone on implantation, clinical pregnancy and live birth rates following IVF-ET. STUDY DESIGN: The study group consisted of 120 women, 22-42 years old, in whom IVF-ET was performed and whose ANA could be measured. Prednisolone (15-60 mg/d for 5 days) was administered starting 1 day after oocyte retrieval to some women with or without ANA, without randomization. The 223 IVF-ET cycles were divided into prednisolone-nontreated ANA-negative cycles, prednisolone-treated ANA-negative cycles, prednisolone-nontreated ANA-positive cycles and prednisolone-treated ANA-positive cycles. Retrospective analysis of rates of implantation, clinical pregnancy, and live birth were evaluated in the four groups. RESULTS: Overall, ANA positivity was noted in 20.0% of subjects (24/120) and 25.1% of cycles (56/223). Implantation and clinical pregnancy rates in the prednisolone-nontreated ANA-positive group were 0% (0/41 transplanted embryos) and 0% (0/15 cycles), significantly lower than in the other groups. The live birth rate in this group was significantly lower than in the prednisolone-nontreated ANA-negative group and non-significantly tended to be lower than in the other 2 CONCLUSION: Implantation, clinical pregnancy and live birth rates following IVF-ET were low when ANA was detected. Implantation and clinical pregnancy rates were improved significantly by prednisolone, but the live birth rate was not.     

Phytoestrogens may improve the pregnancy rate in in vitro fertilization-embryo transfer cycles: a prospective, controlled, randomized trial

OBJECTIVE: To compare the effectiveness of i.m. P and i.m. P plus oral phytoestrogens for luteal phase support in patients undergoing IVF-ET cycles. DESIGN: Prospective, controlled, randomized trial. SETTING: University Hospital, Perugia, Italy. PATIENT(S): Two hundred thirteen infertile patients undergoing IVF-ET were included in the study. The inclusion criteria were use of a GnRH agonist for pituitary down-regulation and age <40 years. The total number of cycles performed was 274. INTERVENTION(S): Patients were assigned to receive either i.m. P (50 mg daily) plus placebo or P (50 mg daily) plus phytoestrogen supplementation (1,500 mg daily) for luteal phase support starting from the evening of oocyte retrieval until either a serum pregnancy test result was negative or embryonic heartbeat was sonographically confirmed. MAIN OUTCOME MEASURE(S): The outcomes of IVF-ET were evaluated in both study groups in terms of implantation rate, biochemical pregnancy rate (PR), clinical PR, spontaneous abortion rate, and ongoing pregnancy/delivered rate. RESULT(S): Statistically significant higher values for implantation rate, clinical PR, and ongoing pregnancy/delivered rate were recorded in the patients who received P plus phytoestrogens for luteal phase support in comparison with patients receiving P and placebo. CONCLUSION(S): Although the results of this study encourage the use of phytoestrogens for luteal phase support in patients undergoing IVF-ET program, more studies are necessary to support the hypothesis that phytoestrogens have a beneficial effect in IVF cycles.     

Ultrasound guided embryo transfer significantly improves pregnancy rates in women undergoing oocyte donation.

OBJECTIVES: Recent reports suggest ultrasound (US) guided embryo transfer (ET) improves pregnancy rates. Using the ovum donation model to eliminate confounding variables, we assessed the impact of US guided ET on pregnancy rates, implantation rates, and multiple gestation rates. METHODS: All women who underwent IVF-ET cycles using donated oocytes from November 1997 to September 1998 (n = 137) were evaluated retrospectively. ET from November 1997 to April 1998 were performed without US, while all ET from May 1998 to September 1998 were performed using transvaginal or transabdominal US. ET was further categorized as easy or difficult. Difficult ET was defined as requiring at least two attempts and/or the presence of blood on the catheter and/or > 5 min. RESULTS: Pregnant patients (n = 73) were similar with respect to the number and morphology of the embryos transferred compared to non-pregnant patients (n = 65). US guidance significantly improved implantation and pregnancy rates in cycles with easy transfers [28.8 vs. 18.4% and 63.1 vs. 36.1%, respectively (P < 0.05)] without impacting multiple pregnancy rates. CONCLUSION: US guided ET is simple and reassuring and appears to significantly improve pregnancy outcomes in ovum donation cycles by optimizing the placement of embryos.     

体外受精-胚胎移植周期第次对其妊娠的影响

目的 探讨体外受精－胚胎移植（IVF－ET）周期第次对其妊娠的影响。方法 回顾性分析妇性输卵管因素不孕行IVF－ET的908个周期的资料。结果 胺患者进行IVF－ET周期治疗的第1次、第2次、第3次、第4次及以上分4组，其种植率分别为17.6%、17.5%、8.7%、4.6%，经分别为41.1%、40.2%、21.1%、17.2%。进行IVF－ET周期第3次及以上的种植率肽临床妊娠率比周期第1次、第2次低，经x^2检验，有统计学意义（P＜0.001）。结论 随患者进行IVF－ET周期第次的增加，IVF－ET种植率及临床妊娠率逐渐下降，尤其是第3周期以上者更为明显。     

Controlled ovarian hyperstimulation does not adversely affect endometrial receptivity in in vitro fertilization cycles

OBJECTIVE: To determine whether exposure of developing endometrium to supraphysiologic E2 levels during controlled ovarian hyperstimulation (COH) in IVF cycles inhibits endometrial receptivity. DESIGN: Retrospective analysis of IVF-ET and ovum donation data. SETTING: Tertiary-care teaching hospital. PATIENT(S): Four hundred ten patients <33 years of age undergoing IVF-ET and 181 anonymous ovum donors (<33 years of age) and their associated ovum recipients. MAIN OUTCOME MEASURE(S): Implantation, pregnancy, and delivery rates. RESULT(S): Ovarian response to COH (duration of stimulation, peak E2 level, area under the curve for E2 exposure, and number of oocytes retrieved) was similar for IVF-ET patients and ovum donors. Donors were younger than IVF-ET patients (mean age, 27.5 +/- 0.2 years vs. 30.4 +/- 0.1 years). A similar number of embryos with similar number of blastomeres were transferred in IVF-ET patients and ovum recipients. The fragmentation rate at time of transfer differed slightly between groups (5.2 +/- 0.2% vs. 4.3 +/- 0.3%). Implantation, pregnancy, and delivery rates did not differ between IVF-ET patients and recipients of donor oocytes. CONCLUSION(S): Exposure of the developing endometrium to controlled ovarian hyperstimulation during IVF cycles does not inhibit embryo implantation or affect pregnancy and delivery rates.     

三种促超排卵方案体外受精-胚胎移植临床妊娠率的分析

目的 :分析 3种促超排卵方案 (tropichyperovulationprogramme ,THOP)体外受精 -胚胎移植 (IVF -ET)的临床妊娠率。方法 :不孕症 136例分为 3组 :1组 5 1例 ,应用高纯促卵泡成熟激素 (HP -FSH ,商品名Metrodine -HP) ,递减给药促超排卵 ,应用促性腺激素释放激素兴奋剂 (GnRH -a ,商品名Buserelin)长方案降调节 ,从月经第 3天开始递减HP-FSH。 2组 5 0例 ,HP -FSH和人绝经期促性腺激素 (hMG)联合递减给药的促超排卵长方案降调节。 3组 35例 ,hMG递增给药促超排卵。分析 3种THOP的平均取卵数、受精后卵裂数、移植数、临床妊娠数及IVF -ET移植周期的临床妊娠率。结果 :(1) 1组 ,平均取卵数 10 .13± 4 .4 9,卵受精数 7.83± 4 .13,受精率 77.2 9% ,卵裂数 7.6 2± 4 .19,移植数3.88± 1.17及临床妊娠数 18,临床妊娠率 35 .2 9% ;(2 ) 2组 ,平均取卵数 9.16± 5 .4 9,卵受精数 6 .84± 4 .2 3,受精率 74 .6 7% ,卵裂数 6 .5± 4 .2 2 ,移植数 3.6 8± 0 .99及临床妊娠数15 ,临床妊娠率 30 .0 % ;(3) 3组 ,平均取卵数 11.31± 7.6 4 ,卵受精数 7.89± 5 .36 ,受精率 6 9.82 % ,卵裂数 7.75± 5 .94 ,移植数 3.6 8± 1.0 8及临床妊娠数 15 ,临床妊娠率4 2 .86 %。 1组与 2组用药安瓿比较 ,差异有高度显著性 (P     

Subtle rise in serum progesterone during the follicular phase as a predictor of the outcome of in vitro fertilization.

OBJECTIVE: To investigate the effects of subtle rises in serum progesterone (P) during the follicular phase on the outcome of in vitro fertilization and embryo transfer (IVF-ET). DESIGN, PATIENTS: One hundred one patients underwent IVF-ET for 170 cycles and were stimulated with a combination of clomiphene citrate and human menopausal gonadotropin. Based on their hormonal data, we divided the patients into two groups: those who had a cycle with an increase in serum P concentration (1.0 to 2.0 ng/mL) that was not associated with a pituitary LH release (subtle P rise) and those who had a cycle without any increase in serum P concentration (no P rise). MAIN OUTCOME MEASURES: The daily serum estradiol (E2) concentration and the results of IVF-ET (number of developed and collected oocytes, rates of mature oocytes, fertilization, and pregnancy) were compared between the two groups. RESULTS: Subtle P rises were observed in 31.7% (32/101) of the patients and 20.5% (36/170) of the cycles evaluated during the IVF-ET programs. A significantly higher serum E2 concentration (P less than 0.001) and a greater number of developed and collected oocytes (P less than 0.001 and P less than 0.05, respectively) also were observed in those cycles with a subtle P rise. The rates of mature oocyte formation and fertilization were significantly lower in cycles with a subtle P rise (P less than 0.001 and P less than 0.05, respectively). A lower pregnancy rate was observed in cycles with a subtle P rise, and all 12 ongoing pregnancies occurred only in cycles with a no P rise. CONCLUSION: These results suggest that the development of an increased number of follicles may not necessarily improve the outcome of IVF-ET and that the measurement of serum P may be a better predictor for successful pregnancy.     

Comparison of transmyometrial and transcervical embryo transfer in patients with previously failed in vitro fertilization-embryo transfer cycles and/or cervical stenosis

Objective: To compare ultrasound-guided transmyometrial and transcervical ET in patients with cervical stenosis or in patients who failed to conceive after at least three previous IVF-ET cycles.

Design: A prospective, randomized study.

Setting: The IVF-ET Unit at Serlin Maternity Hospital.

Patient(s): Forty patients undergoing IVF-ET.

Intervention(s): Ultrasound-guided transvaginal, transmyometrial, versus transcervical ET.

Main Outcome Measure(s): Clinical pregnancy rate.

Result(s): Transmyometrial ET was performed in 20 patients and resulted in one clinical pregnancy. Transcervical ET, performed in another 20 similar patients, resulted in three clinical pregnancies.

Conclusion(s): No benefit was derived by electing transmyometrial ET in preference to transcervical ET in patients who had failed to conceive in previous cycles.     

Increased fertilization and pregnancy rate in polypronuclear fertilization cycles in in vitro fertilization-embryo transfer.

OBJECTIVE: To compare fertilization and pregnancy rates between cycles with polypronuclear fertilizations and cycles with normal fertilizations. DESIGN: In vitro fertilization-embryo transfer (IVF-ET) cycles in which oocytes were retrieved were divided into two groups according to the nature of fertilization. PATIENTS: All patients were participants of our IVF-ET program. RESULTS: A significantly higher fertilization rate was found in the polypronuclear fertilization cycles (61% versus 36.6%) and also an improved pregnancy rate (47.5% versus 19.6%) and per embryo transfers (53% versus 28.8%). The vast majority of polypronuclear fertilizations occurred in mature oocytes. CONCLUSION: We believe that the increased receptability of the oocytes improves fertilization and conception rates. The polypronuclear fertilization is an extreme expression of such improved receptibility and should be considered as an encouraging sign for conception.     

同期体外受精-胚胎移植(IVF-ET)赠卵的临床应用

目的:探讨当前形势下中国赠卵的可行性、赠卵数、影响因素及存在的问题。方法:行IVF-ET并自愿捐卵的21例患者及同期接受赠卵并完成IVF-ET周期的23例患者,分析供、受双方的受精率、妊娠率和种植率。结果:23例患者共接受赠卵135枚,平均每周期接受卵子5.6±1.5枚,29个移植周期,12例妊娠,周期妊娠率为41.4%。供卵的21例患者,9个新鲜胚胎移植周期,2例妊娠;32个解冻胚胎移植周期,12例妊娠,冷冻移植周期的妊娠率为37.5%。供、受双方受精率、冷冻胚胎移植周期的妊娠率、累积妊娠率均无统计学差异(P>0.05)。结论:供卵者提供6个左右的卵子既不影响供卵者的妊娠,也能为受卵者提供一个良好的妊娠机会。     

Prediction of the rates of fertilization, cleavage, and pregnancy success by cumulus-coronal morphology in an in vitro fertilization program.

OBJECTIVE: To examine the relation between the grading of cumulus-coronal morphology at oocyte retrieval and the rates of fertilization, cleavage, and pregnancy success in IVF-ET cycles. DESIGN: Retrospective study. SETTING: University-affiliated medical center. PATIENT(S): Infertile women who underwent IVF-ET treatment. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Fertilization and cleavage of the oocytes and the pregnancy outcome. RESULT(S): Mature grade 3 cumulus-oocyte complexes (COCs) constituted the highest percentage among all grades and had a higher fertilization rate than COCs of other grades (77% versus 65%, 43%, and 28% for grades 2, 1, and 4, respectively). The cleavage and polyspermy rates did not correlate with cumulus-coronal morphology grading. The pregnancy rate was higher in cycles with >50% grade 3 COCs than in cycles with < or =50% grade 3 COCs (32% versus 16%). In cycles with >80% grade 3 COCs, the pregnancy rate was 57%. The correlation between the percentage of grade 3 COCs and the pregnancy rate was independent of patient age and the number of COCs retrieved. CONCLUSION(S): The cumulus-coronal morphology grade correlates with the fertilization rate but not with the cleavage or polyspermy rate. In vitro fertilization cycles that have a greater percentage of grade 3 COCs have an increased chance of resulting in pregnancy. The cumulus-coronal morphology grade predicts pregnancy success in IVF-ET cycles.     

Relationship between the day of embryo transfer and the outcome in human in vitro fertilization and embryo transfer

Purpose To clarify the optimal date of embryo transfer (ET), we retrospectively analyzed the relationship between the day of ET and the outcome in human in vitro fertilization and embryo transfer (IVF-ET).Method Of a total of 307 human IVF-ET cycles performed at Kyoto University Hospital between January 1990 and March 1994, we focused on 207 cases of IVF-ET cycles in which two or three good-quality embryos were transferred. These 207 IVF-ET cycles consisted of 54 Day 2 ET cycles, 79 Day 3 ET cycles, 46 Day 4 ET cycles, and 28 Day 5 ET cycles. We compared the pregnancy and live-birth (plus ongoing pregnancy) rates among these four ET groups.Results The pregnancy rates of ET on Days 2 to 4 were not significantly different, whereas Day 5 ET produced a significantly lower pregnancy rate (Day 2, 29.6%; Day 3, 32.9%; Day 4, 30.4%; Day 5, 10.7%). Similar results were obtained for the live-birth (plus ongoing pregnancy) rates (Day 2, 20.3%; Day 3, 18.9%; Day 4, 17.9%; Day 5, 7.1%).Conclusions These results suggest that the day of ET does not fundamentally affect the pregnancy rate in human IVF-ET provided that transfer is made before Day 5.     

40岁以上女性玻璃化冻融胚胎移植替代新鲜胚胎移植可行性分析

目的 探讨40岁以上女性采用全胚胎玻璃化冻融胚胎移植替代新鲜胚胎移植作为超促排卵体外受精-胚胎移植周期首次移植的可行性。方法 回顾性分析中南大学湘雅医院生殖中心 2011年4月至2012年2月1863例新鲜胚胎移植周期和1083例玻璃化冻融胚胎移植周期的临床资料,应用多因素Logistic回归方法,分析临床相关因素与临床妊娠率的关系。 结果 女性年龄超过40岁时,玻璃化冻融胚胎移植的临床妊娠率显著高于新鲜胚胎移植的临床妊娠率（32.56% vs. 16.10%, P<0.05）;多因素Logistic回归分析显示移植周期类型与临床妊娠密切相关,玻璃化冻融胚胎移植对新鲜胚胎移植的妊娠优势比为2.49（95%CI 1.09～5.69,P<0.05）。 结论 年龄超过40岁女性采用玻璃化冻融胚胎移植可获得比新鲜胚胎移植更好的妊娠结局。     

Zygote intrafallopian transfer in patients with tubal factor infertility after repeated failure of implantation with in vitro fertilization-embryo transfer

OBJECTIVE: To evaluate the efficacy of zygote intrafallopian transfer (ZIFT) in terms of implantation and pregnancy rates in patients with tubal factor infertility and repeated implantation failure in IVF-ET cycles. DESIGN: Retrospective analysis of ZIFT cycles. SETTING: An IVF unit in a university hospital. PATIENT(S): Criteria for patient selection for ZIFT included at least four failures of implantation in IVF-ET cycles in which at least 3 embryos were replaced per transfer and a cause of infertility diagnosed as male, unexplained, or tubal factor with proof of one patient tube. INTERVENTION(S): Four to six zygotes were transferred by laparoscopy into the fallopian tube 24-26 hours after oocyte retrieval. MAIN OUTCOME MEASURE(S): Implantation and pregnancy rates were determined in 112 ZIFT cycles performed in 81 patients with repeated failure of implantation. Results were further stratified for patients with tubal factor (n = 15) and patients without tubal factor (n = 66). RESULT(S): The pregnancy and implantation rates for all ZIFT cycles were 35.1% and 11.1%, respectively. Pregnancy and implantation rates per cycle in patients with tubal factor versus patients without tubal factor were 26.6% versus 37.1% and 9.4% versus 11.4%, respectively. CONCLUSION(S): ZIFT can be considered as a mode of treatment for patients with repeated failure of implantation in IVF-ET and with tubal factor with proved patency of one tube.     

体外受精—胚胎移植中影响临床妊娠的因素

目的 探讨体外受精－胚胎移植（ＩＶＦ－ＥＴ）中影响临床妊娠率的因素。方法 对１９９２年至１９９５年１１月因双侧输卵管梗阻而行ＩＶＦ－ＥＴ的５５９个周期的资料进行回顾性分析,应用计算机ＳＰＳＳ－ＰＣ－Ｖ３．０系统,进行单因素变异方差分析。 ５５９个周期总临床妊娠率为２１．６％。结核性输卵管梗阻占２８．４％,继发不孕中３４．９％有人工流产史。环境改变、阻塞原因不同及过去子宫内妊娠,不影响ＩＶＦ－ＥＴ成