【摘 要】
：
The optimal assisted reproductive treatment strategy for infertile women with unilateral tubal obstruction remains uncertain.To investigate the role of intrauterine insemination(IUI)in the treatment of infertile women with unilateral tubal occlusion,the d
【机 构】
：
Department of Reproductive Center, Peking University Shenzhen Hospital, Shenzhen 518036, China;Depar
论文部分内容阅读
The optimal assisted reproductive treatment strategy for infertile women with unilateral tubal obstruction remains uncertain.To investigate the role of intrauterine insemination(IUI)in the treatment of infertile women with unilateral tubal occlusion,the data of 148 couples were retrospectively collected and analyzed.Seventy-eight infertile women with unilateral occlusion diagnosed by hysterosalpingography(HSG)were categorized as the study group and 70 others with unexplained infertility as the control group.The study group was divided into a proximal occlusion subgroup and a mid-distal occlusion subgroup for further analysis.The main outcomes,namely the clinical pregnancy rate(CPR),ongoing pregnancy rate(OPR),and live birth rate(LBR)per cycle,were analyzed.Our results showed a tendency of lower CPR,OPR,and LBR in the study group than in the control group,without statistical significance.Further investigations revealed that the unilateral proximal occlusion subgroup had similar CPR,OPR,and LBR as the control group,while the unilateral mid-distal occlusion subgroup had significantly lower CPR(5.1％vs.20.0％,P=0.035),OPR(5.1％vs.20.0％,P=0.035),and LBR(5.1％vs.20.0％,P=0.035)than the control group.In conclusion,the clinical outcomes of IUI were worse in patients with unilateral tubal occlusion than in those with unexplained infertility.This might be primarily caused by the worse outcome of patients with unilateral mid-distal tubal occlusion instead of proximal occlusion.
其他文献
通过夏比冲击和示波冲击方法分析了两种Ce含量S32750超级双相不锈钢在20～-100℃范围内的冲击吸收能量及能量构成差异,利用Aspex自动扫描电镜分析仪、SEM、EDS研究了Ce对钢中夹杂物的改性行为及冲击断裂行为的影响.结果表明:高Ce试验钢的抗低温冲击断裂性能明显优于低Ce试验钢,前者韧脆转变温度相较后者下降16℃;Ce的添加使得试验钢-80℃冲击吸收能量提高45 J,其主要源于裂纹扩展能Wp的提升(76％).冲击断口形貌观察和夹杂物分析结果显示,低Ce试验钢在-80℃冲击断口表现为完全解理断裂;
Studies have shown that periodontal pathogens can enter the bloodstream,causing a series of reactions that can lead to a variety of systemic diseases.Epidemiological investigations also found a tight correlation between periodontitis(PD)and osteoporosis.T
Constructing two-dimensional (2D) layered materials with traditional three-dimensional (3D) semiconductors into complex heterostructures has opened a new platform for the development of optoelectronic devices. Herein, large-area high performance self-driv
以一种屈服强度为1100 MPa的高强度工程机械用钢为对象,研究了再加热淬火温度(880～980℃)和回火温度(200～650℃)对Q1100钢显微组织和力学性能的影响.结果表明,淬火温度从880℃升高至980℃,试验钢的平均奥氏体晶粒尺寸从8μm增加到24μm,试验钢的屈服强度和抗拉强度都呈先升高后降低的趋势,并在920℃时达到最大,而-40℃冲击性能则随之持续降低.试验钢经920℃淬火+200～650℃回火后,随着回火温度的提高,试验钢的马氏体板条合并,板条形貌逐渐模糊,碳化物数量和形貌也随之发生改变
通过光学显微镜、室温拉伸试验、显微硬度计、X射线衍射仪、扫描电镜等方法研究了累积叠轧温度对AZ31镁合金晶粒尺寸、基面织构、界面结合情况及力学性能的影响.结果表明:3道次累积叠轧后的AZ31镁合金晶粒细化效果明显,硬度增大,随着累积叠轧温度的升高,晶粒细化效果减弱,硬度增加趋势减弱.累积叠轧温度升高有弱化基面织构的作用.AZ31镁合板材在450℃累积叠轧3道次,综合力学性能最佳,为显微硬度70.64 HV0.05,抗拉强度288.64 MPa,屈服强度203.76 MPa,伸长率16.96％,界面结合强度
The effects of low ratio of n-6/n-3 polyunsaturated fatty acids(PUFA)have been clarified against atherosclerosis.Increasing evidence indicated that plant sterols(PS)have a significant cholesterol-lowering effect.This study explored the effects of PS combi
采用光学显微镜、扫描电镜、电子万能试验机、数显显微硬度计,研究了一步法淬火配分(Q&P)工艺和热轧一步法淬火配分(HR-Q&P)工艺在不同配分温度下处理后Q235钢的组织和力学性能.结果表明:HR-Q&P工艺使试验钢晶粒明显细化,显微组织由马氏体、铁素体和贝氏体组成,在350℃配分下,屈服强度和抗拉强度都达到最大值,分别为449 MPa和560 MPa,伸长率与原样相比下降了8％,但仍然超过30％;硬相的马氏体和贝氏体的同时出现,导致断口出现二次裂纹;一步法Q&P工艺下,与未处理试验钢相比,抗拉强度提高约
Renal cancer is a common genitourinary malignance,of which clear cell renal cell carcinoma(ccRCC)has high aggressiveness and leads to most cancer-related deaths.Identification of sensitive and reliable biomarkers for predicting tumorigenesis and progressi
为研究等通道转角挤压(ECAP)+退火对高氮钢力学行为的影响,室温条件下对高氮钢进行1道次ECAP变形,之后分别在700、800、850、900℃下对不同N含量的试验钢进行退火处理,分析其力学性能变化规律.结果表明:高氮钢随着退火温度的升高,屈服强度和抗拉强度整体上呈下降的趋势,塑性随退火温度的升高而上升;不同状态高氮钢的抗拉强度与均匀延伸率之间都呈现了传统的强塑性之间的矛盾关系,随N含量的增加,呈现强度和均匀延伸率同步提高的趋势;高氮钢ECAP+低温退火后的拉伸断口呈现沿晶断裂形貌,随N含量的升高,沿晶
Non-Herlitz junctional epidermolysis bullosa(JEB-nH),an autosomal recessive bullous genodermatosis,is characterized by generalized skin blistering from birth onward,dental anomalies,universal alopecia and nail dystrophy.The underlying defect is mutation o