fetal demise

胎儿死亡
  • 文章类型: Systematic Review
    背景:胎儿运动监测是用于评估胎儿健康的策略之一。直到现在,大多数研究集中在胎儿运动减少和新生儿结局,尽管本系统综述和荟萃分析旨在评估胎动增加(IFM)与围产期结局之间的关联.
    方法:包括PubMed、Scopus,WebofScience,和EMBASE被系统地搜索了调查从开始到2023年7月胎动增加妇女围产期结局的研究.在此之后,随机效应荟萃分析模型用于获得包括围产期死亡率(死胎和早期新生儿死亡率)在内的综合诊断和预测参数,手术交付,阿普加得分,新生儿出生时复苏和NICU入院。
    结果:初筛后,纳入了7项研究,研究了妊娠晚期胎动增加与各种围产期结局之间的关系.Meta分析显示,与对照组相比,IFM患者的剖宫产风险显着降低。提示分娩时的潜在保护作用。然而,出生体重无统计学差异,胎龄婴儿小或大,新生儿重症监护病房入院,产妇年龄,脐带绕在脖子上,妊娠期糖尿病,和高血压,表明IFM可能不是不良围产期结局或孕产妇状况的主要预测因子。值得注意的是,IFM与更高的引产可能性显着相关。
    结论:研究结果表明,IFM可能对剖宫产具有保护作用。此外,IFM似乎与产妇年龄没有显着相关,脐带绕在脖子上,妊娠期糖尿病和高血压。然而,观察到的与引产的显著关联值得进一步研究.
    BACKGROUND: Fetal movement monitoring is one of the strategies used to assess the fetus\'s health. Until now, most studies focused on the decreased fetal movement and neonatal outcome, although this systematic review and meta-analysis is designed to assess the association between increased fetal movements (IFM) with perinatal outcomes.
    METHODS: The electronic databases including PubMed, Scopus, Web of Science, and EMBASE were systematically searched for studies investigating the perinatal outcome of women with increased fetal movements from inception to July 2023. Following that, a random-effect meta-analysis model was used to obtain the combined diagnostic and predictive parameters including perinatal mortality (still birth and early neonatal mortality), operative delivery, Apgar score, neonatal resuscitation at birth and NICU Admission.
    RESULTS: After the initial screening, seven studies examining the association between increased third trimester fetal movement and various perinatal outcomes were included. Meta-analysis revealed a significant reduction in the risk of cesarean delivery among patients with IFM compared to controls, suggesting a potential protective effect during childbirth. However, no statistically significant difference was observed in birth weight, small or large for gestational age births, neonatal intensive care unit admission, maternal age, umbilical cord around the neck, gestational diabetes mellitus, and hypertension, indicating that IFM may not be a major predictor of adverse perinatal outcomes or maternal conditions. Notably, IFM was significantly associated with a higher likelihood of labor induction.
    CONCLUSIONS: The findings suggest that IFM may have a protective effect against cesarean delivery. Additionally, IFM does not appear to be significantly associated with maternal age, umbilical cord around the neck, gestational diabetes mellitus and hypertension. However, the observed significant association with labor induction warrants further investigation.
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  • 文章类型: Journal Article
    目的:胎儿和新生儿尸检为生殖医学中的疾病过程和临床决策提供了重要的见解。阐明死亡原因并更深入地了解导致胎儿死亡的实体有助于医生和患者的预期指导。准确评估胎儿的生长和约会是对胎儿和新生儿人群进行病理分类的重要方面。本研究旨在优化尸检方法,以确定大小和年代差异,除了探索死产原因的当前趋势,关于胎盘,胎儿/新生儿,和母亲因素,以及尸检后仍未确定的病例率。
    方法:对2008年年中至2021年的尸检报告进行的单机构回顾性审查显示,有243项完整的围产期尸检检查。
    结果:在46%的病例中发现了胎盘死亡的原因。在22%的病例中,死亡原因尚未确定。在几乎一半的死亡原因未确定的病例中,对一个病例子集的评估几乎没有报告大小和/或日期差异。
    结论:“最佳实践”建议在死后确定胎儿/新生儿的大小和日期,以帮助提供明确的,一致的报告。因为胎儿和新生儿尸检是了解导致死产的因素的宝贵工具,重要的是使用适当的大小和约会方法以及一致的语言来提供适当的患者教育和临床指导。
    OBJECTIVE: Fetal and neonatal autopsy offers critical insight into disease processes and clinical decision-making in reproductive medicine. Elucidating the cause of death and gaining a deeper understanding of the entities leading to fetal demise aids in anticipatory guidance for physicians and patients. Accurate assessment of growth and dating of fetuses is an important aspect of classifying pathology in the fetal and neonatal population. This study aims to optimize the autopsy approach to sizing and dating discrepancies, in addition to exploring the current trends in causes of stillbirth, with respect to placental, fetal/neonatal, and maternal factors, and rates of cases that remain undetermined after autopsy.
    METHODS: A single-institution retrospective review of autopsy reports from mid-2008 through 2021 revealed 243 complete perinatal autopsy examinations.
    RESULTS: Placental cause of demise was identified in 46% of cases. Cause of demise was undetermined in 22% of cases. Evaluation of a subset of cases exposed minimal to no reporting of size and/or dating discrepancies in almost half of cases with undetermined cause of death.
    CONCLUSIONS: \"Best practice\" suggestions for sizing and dating fetuses/neonates in the postmortem period have been developed to aid in delivering clear, consistent reports. Because fetal and neonatal autopsy is an invaluable tool for understanding the factors that contribute to stillbirth, it is important to use appropriate sizing and dating methods and consistent language to deliver proper patient education and clinical guidance.
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  • 文章类型: Journal Article
    背景:这项回顾性单中心研究认为绒毛膜下出血(SCH)的特定超声特征作为不良妊娠结局的潜在指标具有预测价值。
    方法:回顾了2018年1月至2019年1月到早孕评估单位就诊的160名参与者的超声报告和图像。根据孕早期SCH的存在选择参与者。每次妊娠的结局和SCH的特征,包括尺寸,记录位置和回声,并采用多因素logistic回归建立预测值.
    结果:大多数参与者无症状且分娩健康的婴儿。24%的人在分娩前流产或有死产婴儿;该组中的出血特征显示,在中度出血的情况下,不良结局的患病率增加(p=0.02)。61%的流产妊娠出现“包裹”SCH,其中出血包裹了妊娠囊,提示包裹可能存在风险(p=0.01)。71%的流产发生在妊娠5+0-10+0周。在那些有不良结局的参与者中,持续性SCH的发生率更高(57%)。胎儿异常与流产之间没有关联。黄疸婴儿和早产发生的频率更高(p=0.001),可能是SCH之后的次要发现。
    结论:妊娠早期SCH的存在与流产率之间存在很强的相关性。SCH的特定超声特征,最值得注意的是中等尺寸的包装位置,可能表明流产或产后并发症的风险增加。黄疸和早产可能与胎盘妥协有关。
    BACKGROUND: This retrospective single centre study considers the predictive value of specific ultrasound features of sub-chorionic haemorrhage (SCH) as potential indicators of adverse pregnancy outcome.
    METHODS: Ultrasound reports and images were reviewed for 160 participants presenting to an early pregnancy assessment unit from January 2018 to January 2019. Participants were selected based upon the presence of SCH within the first trimester. The outcome of each pregnancy and the features of SCH, including the size, location and echogenicity were recorded and multinominal logistic regression was used to establish predictive value.
    RESULTS: The majority of participants were asymptomatic and delivered healthy babies. 24% miscarried prior to delivery or had stillborn babies; the features of bleed within this group revealed an increased prevalence of adverse outcome in the presence of moderate sized haemorrhage (p = 0.02). 61% of miscarried pregnancies presented with \"wrapping\" SCH, in which haemorrhage encased the gestation sac, suggesting wrapping posed a probable risk (p = 0.01). 71% of miscarriages occurred within 5 + 0-10 + 0 weeks gestation. Persistent SCH was of greater incidence within those participants with adverse outcome (57%). There was no association between fetal abnormality and miscarriage. Jaundice babies and premature delivery occurred more frequently (p = 0.001) and may be a secondary finding following SCH.
    CONCLUSIONS: There was a strong correlation between presence of SCH in early pregnancy and rate of miscarriage. Specific ultrasound features of SCH, most notably a wrapping location with moderate size, may be indicative of increased risk of miscarriage or post-natal complications. Jaundice and premature births may have an association with placental compromise.
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  • 文章类型: Review
    在单绒毛膜双胎妊娠中,通过胎盘血管吻合的胎儿出血(FFH)被认为是导致“第一双胞胎(共同双胞胎)”死亡后“第二双胞胎”死亡或受损的原因。然而,FFH的时间很难确定。通过发现大脑中动脉收缩期峰值速度(MCA-PSV)升高,可以怀疑存活双胞胎中的贫血。但是这种升高可能会在第一个双胞胎死亡后至少4小时。了解FFH的时机可能具有重要的临床意义。因为它可能决定是否以及何时需要尝试通过分娩或宫内输血来防止第二对双胞胎的死亡或损害。我们提出了一个案例,该案例支持FFH发生在第一个双胞胎实际死亡之前的观点。还进行了文献综述。
    Feto-fetal hemorrhage (FFH) through placental vascular anastomoses is believed to be responsible for the death or damage of a \"second twin\" after the demise of a \"first twin (co-twin)\" in monochorionic twin pregnancies. However, the timing of FFH has been difficult to determine. The resulting anemia in the surviving twin can be suspected by the finding of an elevated middle cerebral artery peak-systolic velocity (MCA-PSV), but this elevation may lag for at least 4 h after the demise of the first twin. Knowledge of the timing of FFH may have important clinical implications, as it may dictate if and when attempts to prevent death or damage to the second twin by delivery or intrauterine fetal transfusion would be warranted. We present a case that supports the notion that FFH occurs before the actual demise of the first twin. A review of the literature was also conducted.
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  • 文章类型: Journal Article
    目的:描述SARS-CoV-2感染后胎儿死亡的特征,并阐明其是否与临床严重程度相关。胎盘病变或畸形或由于实际胎儿感染。
    方法:PubMed和WebofScience数据库(在2019年12月1日至2022年4月30日之间搜索)。
    方法:队列,横断面和病例对照研究,以及描述死产或晚期流产的病例系列或病例报告(即发生在14至22周之间的妊娠损失,分娩前后,分别)来自怀孕期间感染SARS-CoV-2的母亲(通过鼻咽拭子上至少一个阳性的实时逆转录聚合酶链反应证明,和/或胎盘感染SARS-CoV-2)。未应用语言限制;排除可能解释胎儿死亡的其他原因的病例。
    方法:遵循PRISMA和MOOSE指南。使用特定的梅奥诊所循证实践中心工具评估病例系列/报告的质量。收集产妇和临床胎儿数据以及胎盘和胎儿病毒学和组织学发现。使用世界卫生组织标准对疾病严重程度和胎儿-新生儿感染进行分类,并对数据进行描述性统计。
    结果:分析了来自184名母亲和190名胎儿的数据。与母体临床严重程度或胎儿畸形无明显联系。大约78%的胎儿死亡发生在孕中期和晚期,在诊断为SARS-CoV-2感染或症状开始后的6天和13天,分别。大多数(88%)胎盘对SARS-CoV-2呈阳性,或表现出先前在经胎盘传播的感染中观察到的胎盘炎(大量纤维蛋白沉积和慢性阴道炎)的组织学特征(约85-91%)。11例(5.8%)和114例(60%)胎儿已确认或可能在子宫内传播SARS-CoV-2感染,分别。
    结论:现有数据的综合表明,胎儿死亡通常发生在感染后几天,与经胎盘传播SARS-CoV-2相关的组织学胎盘炎性病变并最终导致胎盘功能不全。
    This study aimed to describe the characteristics of fetal demise after SARS-CoV-2 infections and clarify whether it is associated with clinical severity, placental lesions, or malformations or due to actual fetal infections.
    PubMed and Web of Science databases were searched between December 1, 2019, and April 30, 2022.
    Cohort, cross-sectional, and case-control studies and case series or case reports describing stillbirths or late miscarriages (ie, pregnancy loss occurring between 14 and 22 weeks of gestation, before and after the onset of labor) from mothers with SARS-CoV-2 infection during pregnancy (demonstrated by at least 1 positive real-time reverse transcription-polymerase chain reaction from nasopharyngeal swabs and/or SARS-CoV-2 placental infection). No language restriction was applied; cases with other causes possibly explaining the fetal demise were excluded.
    The Preferred Reporting Items for Systematic Reviews and Meta-Analyses and Meta-analysis Of Observational Studies in Epidemiology guidelines were followed. The quality of the case series and case reports was evaluated using the specific Mayo Clinic Evidence-Based Practice Center tool. Maternal and clinical fetal data and placental and fetal virology and histology findings were collected. Data were summarized with descriptive statistics using the World Health Organization criteria to classify disease severity and fetal-neonatal infections.
    Data from 184 mothers and 190 fetuses were analyzed. No clear link to maternal clinical severity or fetal malformation was evident. Approximately 78% of fetal demise cases occurred during the second and third trimesters of pregnancy, approximately 6 to 13 days after the diagnosis of SARS-CoV-2 infection or the onset of symptoms. Most placentas (88%) were positive for SARS-CoV-2 or presented the histologic features of placentitis (massive fibrin deposition and chronic intervillositis) previously observed in transplacentally transmitted infections (85%-91%). Of note, 11 fetuses (5.8%) had a confirmed in utero transmitted SARS-CoV-2 infection, and 114 fetuses (60%) had a possible in utero transmitted SARS-CoV-2 infection.
    The synthesis of available data showed that fetal demise generally occurs a few days after the infection with histologic placental inflammatory lesions associated with transplacental SARS-CoV-2 transmission and eventually causing placental insufficiency.
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  • 文章类型: Case Reports
    该病例报告描述了一名32岁女性的评估和管理,该女性在妊娠23周胎儿死亡后不久出现多种症状,包括带血的阴道分泌物.尽管最初的诊断关注是转移性恶性肿瘤,最终确定患者患有播散性结核病。生殖器结核在世界范围内很常见,然而,评估指南是有限的。这份报告强调了妊娠再激活结核病之间的关系,并指导临床医生在围产期的诊断和管理注意事项。
    This case report describes the evaluation and management of a 32-year-old woman who presented shortly after a fetal demise at 23 weeks of gestation with multiple symptoms, including bloody vaginal discharge. Although the initial diagnostic concern was for metastatic malignancy, the patient was ultimately determined to have disseminated tuberculosis. Genital tuberculosis is common worldwide, yet guidelines for evaluation are limited. This report highlights the relationship between pregnancy-reactivated tuberculosis, and guides clinicians on diagnostic and management considerations in the peripartum period.
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  • 文章类型: Journal Article
    背景:双胎输血综合征干预后单胎死亡是一种相对常见的并发症,对患者来说往往是毁灭性的。
    目的:本荟萃分析旨在根据胎龄和Quintero分期评估胎儿镜下激光光凝后双胎对双胎输血综合征干预时单胎死亡的风险。
    方法:在PubMed中进行了系统搜索,WebofScience,和Scopus从成立到2021年8月。主要结果是比较低(I和II)和高(III和IV)双胎对双胎输血综合征Quintero期之间胎儿死亡的发生率。将每个阶段的供体和受体胎儿死亡率与I阶段的死亡率进行比较。比较了存活胎儿和死亡胎儿在胎儿镜激光光凝下的妊娠年龄。
    结果:本综述共纳入10项研究(4031例胎儿双胎输血综合征)。与幸存的捐赠者相比,捐赠者死亡与高Quintero阶段相关(赔率比,2.42;95%置信区间,1.78-3.29;P<.001;I2,0%)。与存活的受者相比,受者胎儿死亡有较高Quintero阶段的趋势,但分析没有达到统计学意义.供体死亡的孕妇在胎儿镜激光光凝时的妊娠率较低(平均差,-0.56;95%置信区间,-0.93至-0.18;P=0.003;I2,36%),而受者死亡并发的妊娠在胎儿镜激光光凝时的妊娠与未死亡的妊娠相似。
    结论:胎儿镜下激光光凝术后,与较低阶段相比,供体胎儿的死亡明显增加。胎儿镜下激光光凝术时的胎龄较低与双胎对双胎输血综合征中单胎死亡风险增加相关。这归因于捐赠者死亡的增加,而不是接受者死亡。
    BACKGROUND: Single fetal demise after intervention for twin-twin transfusion syndrome is a relatively common complication and is often devastating for the patients.
    OBJECTIVE: This meta-analysis aimed to evaluate the risk of single fetal demise based on gestational age and Quintero staging at the time of interventions in twin-to-twin transfusion syndrome after fetoscopic laser photocoagulation.
    METHODS: Systematic search was performed in PubMed, Web of Science, and Scopus from inception to August 2021. The primary outcome was to compare the incidence of fetal demise between low (I and II) and high (III and IV) twin-to-twin transfusion syndrome Quintero stages. The rate of donor and recipient fetal demise in each stage was compared with that in stage I. Gestational age at fetoscopic laser photocoagulation was compared between surviving fetuses and fetuses that died.
    RESULTS: A total of 10 studies (4031 fetuses with twin-to-twin transfusion syndrome) were included in this review. Donor demise was associated with high Quintero stages compared with surviving donors (odds ratio, 2.42; 95% confidence interval, 1.78-3.29; P<.001; I2 , 0%). Recipient fetal demise had a trend for higher Quintero stage compared with surviving recipients, but the analysis did not achieve statistical significance. Pregnancies with donor demise had lower gestational at the time of fetoscopic laser photocoagulation (mean difference, -0.56; 95% confidence interval, -0.93 to -0.18; P=.003; I2 , 36%), whereas pregnancies complicated by recipient demise had similar gestational at time of fetoscopic laser photocoagulation compared with those without demise.
    CONCLUSIONS: Demise of the donor fetus was significantly increased after fetoscopic laser photocoagulation for higher stages compared with lower ones. Lower gestational age at the time of fetoscopic laser photocoagulation was associated with an increased risk of single fetal demise in twin-to-twin transfusion syndrome. This was attributed to increased donor demise but not recipient death.
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  • 文章类型: Journal Article
    未经证实:目前的文献建议在妊娠20周后的中期妊娠药物流产前诱导胎儿死亡。关于这一程序在低收入国家的实践和有效性的文献不足,比如埃塞俄比亚。这项研究旨在记录在埃塞俄比亚地区,心内利多卡因和羊水内地高辛在妊娠中期药物流产前诱导胎儿死亡的有效性。
    UNASSIGNED:这是在圣保罗医院千年医学院进行的回顾性图表审查,在埃塞俄比亚。回顾了妊娠20至28周(2021年4月1日至2021年9月30日)的妊娠中期药物流产前给药的65例。主要结果是在首次注射杀昆虫剂后的第二天胎儿心脏活动停止。数据是通过使用英文编写的数据提取工具查看母体图表来提取的。使用SPSS版本23分析数据。使用简单的描述性统计来分析基线特征和胎儿死亡结局。结果以百分比和频率表示。
    UNASSIGNED:超过四分之三的杀虫剂注射是羊膜腔内地高辛,而其余的(24.6%,16/65)是心脏内利多卡因。在92.3%(60/65)的病例中,注射地高辛或利多卡因可有效诱导胎儿死亡。心内利多卡因给药在注射后第二天内诱导胎儿死亡的有效性为100%(16/16),而地高辛在同一时期内的有效性为89.8%。
    未经批准:在这项研究中,羊膜腔内地高辛和心内利多卡因均可有效诱导胎儿死亡,这支持了以前类似研究的发现。
    未经评估:在埃塞俄比亚的背景下,羊水腔内注射地高辛和心内注射利多卡因均可有效诱导妊娠20周后中期流产前胎儿死亡。
    UNASSIGNED: Current literature recommends inducing fetal demise prior to second trimester medication abortion beyond 20 weeks of gestation. There is inadequate literature regarding the practice and effectiveness of this procedure in low-income countries, such as Ethiopia. This study aimed at documenting the effectiveness of intra-cardiac lidocaine and intra-amniotic digoxin at inducing fetal demise before second trimester medication abortion in an Ethiopian setting.
    UNASSIGNED: This is a retrospective chart review conducted at St. Paul\'s Hospital Millennium Medical College, in Ethiopia. A total of 65 cases of feticide administration before 2nd trimester medication abortion between 20 and 28 weeks of gestation (From April 1, 2021 to September 30, 2021) were reviewed. The primary outcome was cessation of fetal cardiac activity the day after the first feticide injection. Data were extracted by reviewing maternal charts using a data extraction tool prepared in English. Data were analyzed using SPSS version 23. Simple descriptive statistics were used to analyze baseline characteristics and fetal demise outcomes. Results were presented in percentages and frequencies.
    UNASSIGNED: More than three quarters of the feticide injections were with intra-amniotic digoxin, while the rest (24.6%, 16/65) were with intra-cardiac lidocaine. Injection of digoxin or lidocaine was effective at inducing fetal demise the day after administration in 92.3% (60/65) of the cases. Intracardiac lidocaine administration was 100% (16/16) effective at inducing fetal demise within the day after the injection while the effectiveness of digoxin within the same period was 89.8%.
    UNASSIGNED: In this study, both intra-amniotic digoxin and intra-cardiac lidocaine were effective at inducing fetal demise, which is in support of findings from similar previous studies.
    UNASSIGNED: In an Ethiopian setting, both intra-amniotic digoxin and intra-cardiac lidocaine injections are effective at inducing fetal demise before second trimester abortion beyond 20 weeks of gestation within the next day after feticide administration.
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  • 文章类型: Journal Article
    类天疱疮妊娠(PG),也被称为妊娠期类天疱疮,因为它与怀孕事件特别相关,是罕见的妊娠相关皮肤病之一,以抗大疱性类天疱疮抗原180和230(BP180和BP230)的自身抗体形成为特征,对皮肤的基底膜造成严重损害,导致腹部和四肢出现明显的瘙痒和水疱。PG的诊断基本上是通过特征性的临床表现,并通过免疫荧光研究和皮肤活检的组织病理学证实。治疗,就像其他自身免疫性皮肤病一样,是通过皮质类固醇实现的,在随后的怀孕中有复发的风险。胎儿生长受限和早产是与该疾病相关的潜在胎儿并发症,因此,皮肤科医生和产科医生推荐的联合产前护理,然而,这种疾病不可能是显著的孕产妇发病率或死亡率的来源.
    Pemphigoid gestationis (PG), also known as gestational pemphigoid, as it is specifically associated with a pregnancy event, is among the rare pregnancy-related dermatoses, characterised by the formation of autoantibodies against Bullous Pemphigoid antigens 180 and 230 (BP180 and BP230), causing significant damage to the basement membrane of the skin, resulting in marked pruritus and blisters on the abdomen and extremities. Diagnosis of PG is basically made by the characteristic clinical picture and confirmed by immunofluorescence studies and histopathology of a skin biopsy. Treatment, just as for other autoimmune dermatoses, is achieved by corticosteroids with the risk of relapses in subsequent pregnancies. Fetal growth restriction and pre-maturity are potential fetal complications associated with the disease, hence the recommended combined antenatal care by a dermatologist as well as an obstetrician, however, this disease is unlikely to be a source of significant maternal morbidity or mortality.
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  • 文章类型: Journal Article
    一些研究已经评估了与激光TTTS后胎儿死亡相关的术前和手术因素,然而,这些发现并不完全是决定性的。
    本研究旨在确定胎儿镜下激光光凝术治疗双胞胎对双胞胎输血综合征后单个胎儿死亡(受体和供体双胞胎)的危险因素。
    我们搜索了PubMed,Scopus,从数据库成立到2020年6月,系统地和WebofScience。我们对研究单绒毛膜妊娠合并双胎至双胎输血综合征的胎儿镜激光光凝后胎儿死亡(供体和/或受体)的危险因素进行了系统评价。最初,我们调查了2012年至2020年在我们的2个高容量胎儿中心接受胎儿镜激光光凝治疗的双胎-双胎输血综合征女性队列,以确定供者死亡和受者死亡的危险因素.此外,为了更好地描述这些因素,我们对文献进行了系统回顾.在符合进入标准的研究中,对多种术前因素和手术因素进行了分析.随机效应模型用于汇集标准化的平均差或比值比以及相应的95%置信区间。使用I2值评估异质性。
    在最终分析中,共有514例使用胎儿镜激光光凝治疗的双胎对双胎输血综合征。在逻辑回归之后,供体死亡的重要因素是选择性胎儿生长受限(比值比,1.9;95%置信区间,1.3-2.8;P=.001)和脐动脉血流,供体舒张末期速度缺失或逆转(比值比,2.06;95%置信区间,1.2-3.4;P=.004)。与受体死亡相关的一个重要因素是受体静脉导管中不存在或逆转了a波(比值比,1.74;95%置信区间,1.07-3.13;P=.04)。包括来自23项研究和我们当前队列的数据。分析了4892例使用胎儿镜激光光凝治疗的双胎对双胎输血综合征的妊娠,以了解供体死亡的危险因素。分析了4594例有双胎对双胎输血综合征的妊娠患者的受者死亡情况.在研究中,供者死亡的总发生率为10.9%~35.8%,受者死亡的总发生率为7.3%~24.5%.供者死亡的重要危险因素是双胎估计胎儿体重不一致>25%(比值比,1.86;95%置信区间,1.44-2.4;I2,0.0%),选择性胎儿生长受限(比值比,1.78;95%置信区间,1.4-2.27;I2,0.0%),双胎对双胎输血综合征III期(优势比,2.18;95%置信区间,1.53-3.12;I2,0.0%),供体的脐动脉血流缺乏或舒张末期速度逆转(比值比,2.31;95%置信区间,1.9-2.8;I2,23.7%),供体静脉导管中不存在或逆转a波(赔率比,1.83;95%置信区间,1.45-2.3;I2,0.0%),和动脉吻合的存在(比值比,2.81;95%置信区间,1.35-5.85;I2,90.7%)。序贯选择性凝血对供体死亡具有保护作用(优势比,0.31;95%置信区间,0.16-0.58;I2,0.0%)。受者死亡的重要危险因素是双胞胎对双胞胎输血综合征IV期(优势比,2.18;95%置信区间,1.01-4.6;I2,16.5%),接受者的脐动脉血流缺乏或舒张末期速度逆转(比值比,2.68;95%置信区间,1.91-3.74;I2,0.0%),接受者静脉导管中不存在或逆转a波(赔率比,2.37;95%置信区间,1.55-3.64;I2,60.2%),和大脑中动脉峰值收缩期速度>1.5倍的中位数(比值比,3.06;95%置信区间,1.36-6.88;I2,0.0%)。
    在接受激光治疗的双胎对双胎输血综合征的妇女中,以多普勒研究异常为代表的异常血流模式和低胎儿体重与单胎死亡有关。尽管顺序选择性凝血可以防止供体死亡,动脉吻合的存在与供体死亡密切相关。这项荟萃分析广泛调查了术前和手术因素与胎儿死亡的关联。这些发现可能是重要的住院咨询,为了进一步了解这种疾病,也许在改进手术技术方面。
    Several studies have assessed preoperative and operative factors associated with fetal demise after laser for TTTS, yet these findings are not completely conclusive.
    This study aimed to identify risk factors for single fetal demise (recipient and donor twins) after fetoscopic laser photocoagulation for twin-to-twin transfusion syndrome.
    We searched PubMed, Scopus, and Web of Science systematically from the inception of the database to June 2020. We conducted a systemic review on studies investigating risk factors for fetal demise (donor and/or recipient) after fetoscopic laser photocoagulation in monochorionic pregnancies complicated with twin-to-twin transfusion syndrome. Initially, we investigated the cohort of women with twin-to-twin transfusion syndrome that underwent fetoscopic laser photocoagulation at our 2 high-volume fetal centers between 2012 and 2020 to identify risk factors for donor demise and recipient demise. Furthermore, we conducted a systematic review of the literature to better characterize these factors. Among studies that met the entry criteria, multiple preoperative and operative factors were tabulated. The random-effect model was used to pool the standardized mean differences or odds ratios and corresponding 95% confidence intervals. Heterogeneity was assessed using the I2 value.
    A total of 514 pregnancies with twin-to-twin transfusion syndrome managed with fetoscopic laser photocoagulation were included in the final analysis. Following the logistic regression, factors that remained significant for donor demise were selective fetal growth restriction (odds ratio, 1.9; 95% confidence interval, 1.3-2.8; P=.001) and umbilical artery blood flow with absent or reversed end-diastolic velocity of the donor (odds ratio, 2.06; 95% confidence interval, 1.2-3.4; P=.004). A significant factor associated with recipient demise was absent or reversed a-wave in the ductus venosus of the recipient (odds ratio, 1.74; 95% confidence interval, 1.07-3.13; P=.04). Data from 23 studies and our current cohort were included. A total of 4892 pregnancies with twin-to-twin transfusion syndrome managed with fetoscopic laser photocoagulation were analyzed for risk factors for donor demise, and 4594 pregnancies with twin-to-twin transfusion syndrome were analyzed for recipient demise. Among studies, the overall incidence rates ranged from 10.9% to 35.8% for donor demise and 7.3% to 24.5% for recipient demise. Significant risk factors for donor demise were intertwin estimated fetal weight discordance of >25% (odds ratio, 1.86; 95% confidence interval, 1.44-2.4; I2, 0.0%), selective fetal growth restriction (odds ratio, 1.78; 95% confidence interval, 1.4-2.27; I2, 0.0%), twin-to-twin transfusion syndrome stage III (odds ratio, 2.18; 95% confidence interval, 1.53-3.12; I2, 0.0%), umbilical artery blood flow with absent or reversed end-diastolic velocity of the donor (odds ratio, 2.31; 95% confidence interval, 1.9-2.8; I2, 23.7%), absent or reversed a-wave in the ductus venosus of the donor (odds ratio, 1.83; 95% confidence interval, 1.45-2.3; I2, 0.0%), and presence of arterioarterial anastomoses (odds ratio, 2.81; 95% confidence interval, 1.35-5.85; I2, 90.7%). Sequential selective coagulation was protective against donor demise (odds ratio, 0.31; 95% confidence interval, 0.16-0.58; I2, 0.0%). Significant risk factors for recipient demise were twin-to-twin transfusion syndrome stage IV (odds ratio, 2.18; 95% confidence interval, 1.01-4.6; I2, 16.5%), umbilical artery blood flow with absent or reversed end-diastolic velocity of the recipient (odds ratio, 2.68; 95% confidence interval, 1.91-3.74; I2, 0.0%), absent or reversed a-wave in the ductus venosus of the recipient (odds ratio, 2.37; 95% confidence interval, 1.55-3.64; I2, 60.2%), and middle cerebral artery peak systolic velocity of >1.5 multiple of the median (odds ratio, 3.06; 95% confidence interval, 1.36-6.88; I2, 0.0%).
    Abnormal blood flow patterns represented by abnormal Doppler studies and low fetal weight were associated with single fetal demise in women with twin-to-twin transfusion syndrome undergoing laser therapy. Although sequential selective coagulation was protective against donor demise, the presence of arterioarterial anastomoses was considerably associated with donor demise. This meta-analysis extensively investigated the association of a wide range of preoperative and operative factors with fetal demise. These findings may be important inpatient counseling, in further understanding the disease, and perhaps in improving surgical techniques.
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