fetal death

胎儿死亡
  • 文章类型: Case Reports
    怀孕期间的精神疾病和自杀未遂案件令人严重关切,因为它们对母亲和胎儿都有负面影响。这里我们报道了一个18岁女性的病例,她在怀孕35周时被发现。当她的嫂子救了她时,她已经失去知觉了。抵达后,她情绪激动,呼吸困难。第二天,她开始自然分娩,分娩了一个在24小时内死亡的早产儿。她过去有精神病史,以前有自杀未遂。她自杀的原因源于她家庭内部的冲突和与丈夫的分歧。各种心理社会因素在自杀风险中起作用,比如年轻的年龄,有精神健康问题史,面临家庭暴力的创伤,并应对财务压力。这强调了在产前就诊过程中进行心理健康筛查以进行完整的风险评估的必要性。
    Cases of mental illnesses and suicide attempts while pregnant are of grave concern because they negatively affect both the mother and her fetus. Here we report a case of an 18-year-old woman, who was found at 35 weeks into her pregnancy. She was unconscious when her sister-in-law rescued her. Upon arrival, she was agitated and had respiratory distress. She went into spontaneous labor the next day and delivered a premature infant who succumbed within 24 h. She had a history of mental illness in the past and previous suicide attempts. The reason for her suicide stemmed from conflicts within her family and disagreement with her husband. Various psychosocial elements play a role in suicide risk, such as young age, having a history of mental health issues, experiencing trauma facing domestic violence, and dealing with financial stress. This underlines the need for mental health screening in the course of antenatal visits for a complete risk assessment.
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  • 文章类型: English Abstract
    胎儿死亡定义为闭经14周后心脏活动的自发停止。在法国,22周后胎儿死亡的发生率为3.2至4.4/1000.关于在一般人群中预防胎儿死亡,不建议咨询休息,不要开维生素A,补充维生素D或微量营养素的唯一目的是降低胎儿死亡的风险(建议薄弱;证据质量低)。不建议开阿司匹林(弱推荐;证据质量很低)。建议在流行期间提供针对流感和针对SARS-CoV-2的疫苗接种(强烈推荐;证据质量低)。不建议在产前超声筛查过程中系统地寻找脐带周围(强烈建议;证据质量低),也不建议通过心脏造影进行系统的产前监测(弱建议;证据质量很低)。不建议要求女性进行积极的胎儿运动计数以降低胎儿死亡的风险(强烈推荐;高质量的证据)。关于胎儿死亡事件的评估,建议系统地提供外部胎儿检查(专家意见)。建议对胎盘进行胎儿病理学和解剖病理学检查,以参与病因鉴定(强建议。证据质量适中)。建议通过微阵列测试进行染色体分析,而不是常规的核型。为了能够更频繁地识别潜在的因果异常(强烈推荐,证据质量适中);为此,建议优选出于遗传目的对胎盘胎儿表面进行产后采样(专家意见)。建议测试抗磷脂抗体并系统地进行Kleihauer测试和不规则凝集素测试(专家意见)。建议提供总结咨询,为了评估父母的身体和心理状况,报告结果,讨论原因并提供后续妊娠监测信息(专家意见)。关于公告和支持,建议毫不含糊地宣布胎儿死亡,用简单的话,适应每一种情况,然后在照顾的各个阶段以同理心支持夫妻(专家意见)。关于管理,有人建议,在没有弥散性血管内凝血或母体活力风险的情况下,在确定胎儿死亡诊断与引产之间的时间时,应考虑患者的意愿。如果患者愿意,可以回家(专家意见)。在所有情况下,不包括危及产妇生命的紧急情况,首选的分娩方式是阴道分娩,不考虑剖宫产史(专家意见)。如果胎儿死亡,建议米非司酮200mg在诱导前至少24小时处方,减少诱导和分娩之间的延迟(低推荐。证据质量低)。文献中的数据不足以就米索前列醇的给药途径(阴道或口服)提出建议,既不是前列腺素的类型,以减少诱导分娩时间或产妇发病率。如果患者要求,建议在诱导开始时引入髓周镇痛,不管胎龄。建议产后立即开卡麦角林,以避免泌乳,不管胎龄是多少,在与患者讨论治疗的副作用后(专家意见)。在随后的怀孕中,不明原因的胎儿死亡后胎儿死亡复发的风险似乎没有增加,文献中的数据不足以就阿司匹林的处方提出建议.如果因血管问题而有胎儿死亡史,建议使用低剂量阿司匹林来降低围产期发病率,并且不应与肝素治疗联合使用(低推荐,证据质量很低)。建议不要仅仅因为胎儿死亡的历史而在开始再次怀孕之前建议最佳延迟。建议将心理支持的可能性告知妇女和共同父母。胎儿心率监测并不仅仅是因为有胎儿死亡史。建议不系统地诱导分娩。然而,可以根据上下文和父母的要求考虑归纳法。将讨论胎龄,考虑到利益和风险,尤其是在39周之前。如果确定了胎儿死亡的原因,管理将根据具体情况进行调整(专家意见)。如果双胎妊娠发生胎儿死亡,建议一旦诊断出胎儿死亡,就对存活的双胞胎进行评估。在绒毛膜下妊娠的情况下,建议每月提供超声监测。建议不要在双胞胎胎儿死亡后过早分娩。如果胎儿死亡发生在单绒毛膜双胎妊娠中,建议联系转诊能力中心,为了在存活的双胞胎中通过超声检查紧急寻找急性胎儿贫血的迹象,并在第一个月进行每周超声监测。建议不要立即催产。
    Fetal death is defined as the spontaneous cessation of cardiac activity after fourteen weeks of amenorrhea. In France, the prevalence of fetal death after 22 weeks is between 3.2 and 4.4/1000 births. Regarding the prevention of fetal death in the general population, it is not recommended to counsel for rest and not to prescribe vitamin A, vitamin D nor micronutrient supplementation for the sole purpose of reducing the risk of fetal death (Weak recommendations; Low quality of evidence). It is not recommended to prescribe aspirin (Weak recommendation; Very low quality of evidence). It is recommended to offer vaccination against influenza in epidemic periods and against SARS-CoV-2 (Strong recommendations; Low quality of evidence). It is not recommended to systematically look for nuchal cord encirclements during prenatal screening ultrasounds (Strong Recommendation; Low Quality of Evidence) and not to perform systematic antepartum monitoring by cardiotocography (Weak Recommendation; Very Low Quality of Evidence). It is not recommended to ask women to perform an active fetal movement count to reduce the risk of fetal death (Strong Recommendation; High Quality of Evidence). Regarding evaluation in the event of fetal death, it is suggested that an external fetal examination be systematically offered (Expert opinion). It is recommended that a fetopathological and anatomopathological examination of the placenta be carried out to participate in cause identification (Strong Recommendation. Moderate quality of evidence). It is recommended that chromosomal analysis by microarray testing be performed rather than conventional karyotype, in order to be able to identify a potentially causal anomaly more frequently (Strong Recommendation, moderate quality of evidence); to this end, it is suggested that postnatal sampling of the placental fetal surface for genetic purposes be preferred (Expert Opinion). It is suggested to test for antiphospholipid antibodies and systematically perform a Kleihauer test and a test for irregular agglutinins (Expert opinion). It is suggested to offer a summary consultation, with the aim of assessing the physical and psychological status of the parents, reporting the results, discussing the cause and providing information on monitoring for a subsequent pregnancy (Expert opinion). Regarding announcement and support, it is suggested to announce fetal death without ambiguity, using simple words and adapting to each situation, and then to support couples with empathy in the various stages of their care (Expert opinion). Regarding management, it is suggested that, in the absence of a situation at risk of disseminated intravascular coagulation or maternal vitality, the patient\'s wishes should be taken into account when determining the time between the diagnosis of fetal death and induction of birth. Returning home is possible if it\'s the patient wish (Expert opinion). In all situations excluding maternal life-threatening emergencies, the preferred mode of delivery is vaginal delivery, regardless the history of cesarean section(s) history (Expert opinion). In the event of fetal death, it is recommended that mifepristone 200mg be prescribed at least 24hours before induction, to reduce the delay between induction and delivery (Low recommendation. Low quality of evidence). There are insufficient data in the literature to make a recommendation regarding the route of administration (vaginal or oral) of misoprostol, neither the type of prostaglandin to reduce induction-delivery time or maternal morbidity. It is suggested that perimedullary analgesia be introduced at the start of induction if the patient asks, regardless of gestational age. It is suggested to prescribe cabergoline immediately in the postpartum period in order to avoid lactation, whatever the gestational age, after discussing the side effects of the treatment with the patient (Expert opinion). The risk of recurrence of fetal death after unexplained fetal death does not appear to be increased in subsequent pregnancies, and data from the literature are insufficient to make a recommendation on the prescription of aspirin. In the event of a history of fetal death due to vascular issues, low-dose aspirin is recommended to reduce perinatal morbidity, and should not be combined with heparin therapy (Low recommendation, very low quality of evidence). It is suggested not to recommend an optimal delay before initiating another pregnancy just because of the history of fetal death. It is suggested that the woman and co-parent be informed of the possibility of psychological support. Fetal heart rate monitoring is not indicated solely because of a history of fetal death. It is suggested that delivery not be systematically induced. However, induction can be considered depending on the context and parental request. The gestational age will be discussed, taking into account the benefits and risks, especially before 39 weeks. If a cause of fetal death is identified, management will be adapted on a case-by-case basis (expert opinion). In the event of fetal death occurring in a twin pregnancy, it is suggested that the surviving twin be evaluated as soon as the diagnosis of fetal death is made. In the case of dichorionic pregnancy, it is suggested to offer ultrasound monitoring on a monthly basis. It is suggested not to deliver prematurely following fetal death of a twin. If fetal death occurs in a monochorionic twin pregnancy, it is suggested to contact the referral competence center, in order to urgently look for signs of acute fetal anemia on ultrasound in the surviving twin, and to carry out weekly ultrasound monitoring for the first month. It is suggested not to induce birth immediately.
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  • 文章类型: Journal Article
    尽管努力减少死产和新生儿死亡,不一致的定义和报告做法继续阻碍全球进展。现有数据在质量和各国之间的可比性方面经常受到限制。本文通过概述新的国际疾病分类(ICD-11)建议来解决这一关键问题,以标准化记录和报告围产期死亡,以提高数据准确性和国际比较。ICD-11的主要进步包括使用胎龄作为报告的主要阈值,对测量和记录胎龄有更清晰的指导,并按胎龄亚组报告死亡率,以使国家比较能够包括相似的人群(例如,所有出生时间为154天[22+0周]或196天[28+0周])。此外,修订后的ICD-11指南进一步澄清了将终止妊娠(人工流产)从围产期死亡率统计中排除的问题.实施ICD-11中规定的标准化记录和报告方法对于有关死产和围产期死亡的准确全球数据至关重要。这种高质量的数据既可以进行适当的区域和国际比较,也可以作为改善临床实践以及流行病学和健康监测的资源,使有限的计划和研究资金能够集中于结束可预防的死亡,并改善每个妇女和每个婴儿的成果,无处不在。
    Despite efforts to reduce stillbirths and neonatal deaths, inconsistent definitions and reporting practices continue to hamper global progress. Existing data frequently being limited in terms of quality and comparability across countries. This paper addresses this critical issue by outlining the new International Classification of Disease (ICD-11) recommendations for standardized recording and reporting of perinatal deaths to improve data accuracy and international comparison. Key advancements in ICD-11 include using gestational age as the primary threshold to for reporting, clearer guidance on measurement and recording of gestational age, and reporting mortality rates by gestational age subgroups to enable country comparisons to include similar populations (e.g., all births from 154 days [22+0 weeks] or from 196 days [28+0 weeks]). Furthermore, the revised ICD-11 guidance provides further clarification around the exclusion of terminations of pregnancy (induced abortions) from perinatal mortality statistics. Implementing standardized recording and reporting methods laid out in ICD-11 will be crucial for accurate global data on stillbirths and perinatal deaths. Such high-quality data would both allow appropriate regional and international comparisons to be made and serve as a resource to improve clinical practice and epidemiological and health surveillance, enabling focusing of limited programmatic and research funds towards ending preventable deaths and improving outcomes for every woman and every baby, everywhere.
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  • 文章类型: Case Reports
    胎儿死亡有多种原因,其中最常见的是与胎盘有关的问题,如胎盘早剥或胎盘畸形如胎盘植入。从文学,与仅对胎儿进行临床病史和外部检查相比,尸检时的胎盘分析可以使病例的分辨率更高。
    我们报告了一个怀孕第11周的妇女在医院死亡的病例。病史显示以前还有两次怀孕,都是剖腹产。尸检确定了孕产妇死亡的原因是自发性子宫破裂引起的失血性休克继发的急性心肺骤停。在绒毛间胎盘间隙中发现了出血浸润,由于前置胎盘和植入导致子宫破裂。
    胎盘植入是观察到胎盘对子宫肌层的病理性粘附和/或侵入的病症。这种情况在恢复过程中会带来问题,可能会导致严重出血。因此,我们强调胎盘的宏观和组织学分析,所有母胎死亡病例的子宫和卵巢,然而,这表明这些器官既要通过总体分析,也要在甲醛持久性之后进行分析。此外,在这些情况下,重要的是评估临床病史和数据,尤其是生活中的超声扫描,或仪器调查期间的插入异常。出于这个原因,我们建议在这些情况下与多学科团队合作,包括妇科医生和法医病理学家.
    UNASSIGNED: Fetal death has various causes, among the most common are problems relating to the placenta, such as placental abruption or placental malformations such as placenta accreta. From the literature, it emerges that placental analysis at autopsy can allow for greater resolution of cases compared to clinical history and external examination of the fetus alone.
    UNASSIGNED: We report the case of a woman at the eleventh week of pregnancy who died in hospital. The medical history revealed two further previous pregnancies, both with births by cesarean section. The autopsy identified the cause of maternal death as acute cardiorespiratory arrest secondary to hemorrhagic shock from spontaneous uterine rupture. Hemorrhagic infiltrate was found in the intervillous placental spaces with rupture of the uterus due to placenta previa and accreta.
    UNASSIGNED: Placenta accreta is a condition in which a pathological adherence and/or invasion of the myometrium by the placenta is observed. This condition poses a problem during recovery with potential for severe bleeding. Therefore, we emphasize the macroscopic and histological analysis of the placenta, uterus and the ovaries in all cases of maternal-fetal death, suggesting however that the organs be analyzed both by gross analysis and after permanence in formaldehyde. Furthermore, in these cases, it is important to evaluate the clinical history and data, especially ultrasound scans performed in life, or insertion anomalies during instrumental investigations. For this reason, we recommend to collaborate with a multidisciplinary team in these cases, including the gynecologist and the forensic pathologist.
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  • 文章类型: Case Reports
    背景技术双胎妊娠的产科并发症之一是一个胎儿的宫内死亡。在妊娠早期发生的死亡通常导致比妊娠中期和晚期死亡更少的并发症。在第二和第三个三个月,据报道,双胎妊娠的单胎死亡增加了死亡,早产,和幸存的双胞胎的神经损伤。虽然罕见,它也可能引发母亲的凝血缺陷。单绒毛膜双胞胎的神经系统疾病也比双绒毛妊娠更常见。因此,终止妊娠的考虑可能会持续存在.病例报告我们介绍了一例单绒毛膜双胎妊娠的初产妇,其胎儿在妊娠20-21周时宫内死亡。我们在12周以上的密切监测下继续妊娠,直到她在足月分娩了存活的患者。幸存的婴儿的结果是正常情况和适当的体重,没有胎儿发病,并且没有与母亲凝血障碍相关的母亲发病率。结论单绒毛膜双胎妊娠合并单胎死亡的保守治疗可能是获得良好结局的最佳选择。我们建议保守管理,在32周后使用非压力测试进行密切监测,双周超声,和至少一个母体凝血谱测试。
    BACKGROUND One of the obstetric complications of twin pregnancy was the intrauterine death of one fetus. The death that occurs in the first trimester usually leads to fewer complications than the death in the second and third trimester. In the second and third trimesters, single fetal death of twin pregnancy was reported to increase the death, preterm birth, and neurological injury of the surviving co-twin. Although rare, it might trigger a coagulation defect in the mother as well. Neurological morbidities were also more common in monochorionic twins than in dichorionic gestation. Thus, a consideration of pregnancy termination might persist. CASE REPORT We present a case of a primigravida with a monochorionic twin pregnancy whose intrauterine death of one fetus at 20-21 weeks of gestation. We managed this patient with pregnancy continuation under close monitoring more than 12 weeks until she delivered the surviving one at term. The outcome of the surviving baby was normal condition and appropriate weight, no fetal morbidity, and no maternal morbidity related to coagulation disorder in the mother. CONCLUSIONS Conservative management under close monitoring until term in monochorionic twin pregnancy with single fetal death could be the best option to obtain a favorable outcome. We recommend conservative management with close surveillance monitoring using non-stress tests after 32 weeks, biweekly ultrasound, and at least of one maternal coagulation profile test.
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  • 文章类型: Journal Article
    背景:开发了这种动态列线图模型,以预测受孕前疾病严重程度较轻的系统性红斑狼疮(SLE)孕妇的胎儿丢失概率。
    方法:对2015年1月至2022年1月在深圳市人民医院住院的314例SLE患者的妊娠记录进行分析。深圳市人民医院龙华分院。深圳市人民医院龙华分院的数据被用作独立的外部验证队列。列线图,一种广泛使用的统计可视化工具来预测疾病发作,programming,预后,和生存,在使用多变量逻辑回归分析进行特征选择后创建。为了评估模型预测性能,我们使用了接收器工作特性曲线,校正曲线,和决策曲线分析。
    结果:狼疮性肾炎,补体3,免疫球蛋白G,血清白蛋白,C反应蛋白,和羟氯喹均包括在列线图模型中。该模型显示出良好的校准和判别能力,曲线下面积为0.867(95%置信区间:0.787-0.947)。根据决策曲线分析,当SLE患者的胎儿丢失概率在10%至70%之间时,列线图模型显示出临床重要性.通过外部验证证明了模型的预测能力。
    结论:预测列线图方法可能有助于在受孕前对患有轻度疾病严重程度的SLE的妊娠患者进行精确管理。
    BACKGROUND: This dynamic nomogram model was developed to predict the probability of fetal loss in pregnant patients with systemic lupus erythematosus (SLE) with mild disease severity before conception.
    METHODS: An analysis was conducted on 314 pregnancy records of patients with SLE who were hospitalized between January 2015 and January 2022 at Shenzhen People\'s Hospital, and the Longhua Branch of Shenzhen People\'s Hospital. Data from the Longhua Branch of the Shenzhen People\'s Hospital were utilized as an independent external validation cohort. The nomogram, a widely used statistical visualization tool to predict disease onset, progression, prognosis, and survival, was created after feature selection using multivariate logistic regression analysis. To evaluate the model prediction performance, we employed the receiver operating characteristic curve, calibration curve, and decision curve analysis.
    RESULTS: Lupus nephritis, complement 3, immunoglobulin G, serum albumin, C-reactive protein, and hydroxychloroquine were all included in the nomogram model. The model demonstrated good calibration and discriminatory power, with an area under the curve of 0.867 (95% confidence interval: 0.787-0.947). According to decision curve analysis, the nomogram model exhibited clinical importance when the probability of fetal loss in patients with SLE ranged between 10 and 70%. The predictive ability of the model was demonstrated through external validation.
    CONCLUSIONS: The predictive nomogram approach may facilitate precise management of pregnant patients with SLE with mild disease severity before conception.
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  • 文章类型: Journal Article
    2008年11月4日,奥巴马当选为美国第一位黑人总统。他的竞选和选举胜利象征着对更公正未来的希望,培养“奥巴马效应”,这似乎与非西班牙裔(NH)黑人社区的福祉改善有关。将奥巴马选举置于象征性授权框架内,我们认为奥巴马选举对NH黑人胎儿死亡的潜在保护作用,围产期健康的一项重要但研究不足的措施,具有明显的种族差异。使用国家卫生统计中心的限制使用的自然档案,我们使用男性双胎率(每1000名男性活产的双胞胎数量)来替代胎儿死亡.男性双胞胎在子宫内选择的风险相对较高,对母体和环境压力敏感,使双胞胎率成为胎儿死亡的重要标志。然后,我们估算了中断的时间序列模型,以评估每月受孕队列(2003年2月至2008年10月)中奥巴马选举与NH黑人出生率之间的关系。高于预期的男性双胞胎比率表明胎儿丢失的易感性较低。结果表明,在子宫内暴露于奥巴马大选的所有NH黑人队列中,男性双胞胎率高出4.5%,在考虑历史和NH白色趋势后(p<0.005)。高于预期的比率集中在奥巴马在民主党全国代表大会上提名和奥巴马赢得总统选举之前的几个月中。这些结果表明,围产期对选举事件的有益反应可能会减少NH黑胎损失。它们还表明,社会政治变化可能会减轻围产期健康中持续存在的NH黑-NH白差异。
    On November 4, 2008, Barack Obama was elected the first Black President of the United States. His campaign and electoral win served as a symbol of hope for a more just future, fostering an \"Obama effect\" that appears associated with improved well-being among non-Hispanic (NH) Black communities. Situating the Obama election within the symbolic empowerment framework, we consider the potentially protective role of the Obama election on NH Black fetal death, an important but understudied measure of perinatal health that has stark racial disparities. Using restricted-use natality files from the National Center for Health Statistics, we proxy fetal death using the male twin rate (number of twins per 1000 male live births). Male twins have a relatively high risk of in utero selection that is sensitive to maternal and environmental stressors, making the twin rate an important marker of fetal death. We then estimate interrupted time-series models to assess the relation between the Obama election and male twin rates among NH Black births across monthly conception cohorts (February 2003-October 2008). Greater-than-expected male twin rates signal less susceptibility to fetal loss. Results indicate a 4.5% higher male twin rate among all NH Black cohorts exposed in utero to the Obama election, after accounting for historical and NH white trends (p < 0.005). The greater-than-expected rates concentrated among births conceived in the months preceding Obama\'s nomination at the Democratic National Convention and Obama\'s presidential win. These results suggest a salutary perinatal response to election events that likely reduced NH Black fetal loss. They also indicate the possibility that sociopolitical shifts can mitigate persisting NH Black-NH white disparities in perinatal health.
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  • 文章类型: Journal Article
    背景:疫苗接种是一种有吸引力的戊型肝炎病毒(HEV)控制措施,全球孕产妇和围产期死亡的主要原因。在HEV疫苗HEV239的有效性试验中,对怀孕参与者的分析显示可能与HEV239相关的胎儿损失。我们旨在对此安全信号进行详细分析。
    方法:在双盲中,集群随机试验,Matlab中的67个村庄,孟加拉国,被随机分配(1:1)到两个疫苗组,其中16-39岁的非孕妇接受HEV239(HEV239组)或Hepa-B(乙型肝炎疫苗;对照组)。我们实施每周监测妊娠检测,每两周对怀孕进行一次随访,使用医生确认的诊断来评估胎儿丢失结局(流产[自然流产],死产,和选择性终止)。必要时,使用Matlab中并行生殖健康监测系统的数据来阐明研究诊断。仅在首次妊娠试验和疫苗接种日期(最接近末次月经期[LMP]的剂量)在妊娠20周之前的参与者中评估流产。我们定义了以下感兴趣的分析期:从LMP前90天到妊娠结局(近端期);从LMP日期到妊娠结局(怀孕期);从LMP前90天到LMP日期(LMP前90天);以及从登记到LMP前90天(远端期)。Poisson和Cox回归模型均用于评估接受HEV239与胎儿丢失结局之间的关联。该试验在ClinicalTrials.gov(NCT02759991)注册。
    结果:在参加试验的19460名非怀孕参与者中,5011被鉴定为在接种疫苗后2年内怀孕并且符合分析标准(HEV239组中2407和对照组中2604)。在近端期接种疫苗并评估流产的参与者中,HEV239组607例54例(8·9%)流产,对照组719例32例(4·5%)流产(调整后相对危险度[aRR]2·0[95%CI1·3-3·1],p=0·0009)。同样,HEV239组与对照组相比,在怀孕期间无意接种疫苗的参与者中,流产的风险增加(HEV239组209名参与者中有22[10·5%]流产,对照组266名参与者中有14[5·3%];aRR2·1[95%CI1·1-4·1],p=0·036)以及在LMP之前90天内接种疫苗的人(398的32[8·0%]对453的18[4·0%];1·9[1·1-3·2],p=0·013)。在远端接受HEV239的患者中未观察到流产风险增加(1647年的93[5·6%]对1773年的80[4·5%];1·3[0·8-1·9],p=0·295)。在任何分析期间,接受HEV239治疗的妇女与接受Hepa-B治疗的妇女相比,死产和选择性终止治疗的风险没有增加。
    结论:在怀孕前不久或怀孕期间给予HEV239与流产风险升高相关。这种关联对育龄妇女计划使用HEV239可能存在安全问题。
    背景:挪威和Innovax研究委员会。
    BACKGROUND: Vaccination constitutes an attractive control measure for hepatitis E virus (HEV), a major cause of maternal and perinatal mortality globally. Analysis of pregnant participants in an effectiveness trial of the HEV vaccine HEV239 showed possible HEV239-associated fetal losses. We aimed to conduct a detailed analysis of this safety signal.
    METHODS: In a double-blind, cluster-randomised trial, 67 villages in Matlab, Bangladesh, were randomly allocated (1:1) to two vaccine groups, in which non-pregnant women aged 16-39 years received either HEV239 (HEV239 group) or Hepa-B (a hepatitis B vaccine; control group). We implemented weekly surveillance for pregnancy detection, and follow-up of pregnancies once every 2 weeks, using physician-confirmed diagnoses to evaluate fetal loss outcomes (miscarriage [spontaneous abortion], stillbirth, and elective termination). Data from a parallel system of reproductive health surveillance in Matlab were used to clarify study diagnoses when necessary. Miscarriage was assessed only among participants whose first positive pregnancy test and vaccination date (for whichever dose was closest to the date of last menstrual period [LMP]) were before 20 weeks\' gestation. We defined the following analysis periods of interest: from 90 days before the LMP until the pregnancy outcome (the proximal period); from the LMP date until the pregnancy outcome (the pregnancy period); from 90 days before the LMP until the LMP date (90 days pre-LMP period); and from enrolment until 90 days before the LMP (the distal period). Both Poisson and Cox regression models were used to assess the associations between receipt of HEV239 and fetal loss outcomes. The trial was registered with ClinicalTrials.gov (NCT02759991).
    RESULTS: Among the 19 460 non-pregnant participants enrolled in the trial, 5011 were identified as having pregnancies within 2 years following vaccination and met the criteria for analysis (2407 in the HEV239 group and 2604 in the control group). Among participants vaccinated in the proximal period and evaluated for miscarriage, miscarriage occurred in 54 (8·9%) of 607 in the HEV239 group and 32 (4·5%) of 719 in the control group (adjusted relative risk [aRR] 2·0 [95% CI 1·3-3·1], p=0·0009). Similarly, the risk of miscarriages was increased in the HEV239 group versus the control group among participants inadvertently vaccinated during pregnancy (22 [10·5%] miscarriages among 209 participants in the HEV239 group vs 14 [5·3%] of 266 in the control group; aRR 2·1 [95% CI 1·1-4·1], p=0·036) and among those vaccinated within 90 days pre-LMP (32 [8·0%] of 398 vs 18 [4·0%] of 453; 1·9 [1·1-3·2], p=0·013). No increased risk of miscarriage was observed in those who received HEV239 in the distal period (93 [5·6%] of 1647 vs 80 [4·5%] of 1773; 1·3 [0·8-1·9], p=0·295). Stillbirth and elective termination showed no increased risk among women administered HEV239 versus those administered Hepa-B in any of the analysis periods.
    CONCLUSIONS: HEV239 given shortly before or during pregnancy was associated with an elevated risk of miscarriage. This association poses a possible safety concern for programmatic use of HEV239 in women of childbearing age.
    BACKGROUND: Research Council of Norway and Innovax.
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  • 文章类型: Case Reports
    背景:胎儿脐带血肿发病率低,死亡率高,其在分娩过程中的原因往往是不清楚的。我们报告了一个尸检病例,其中得出结论,脐带血肿是由分娩期间的胎儿运动引起的。
    一名27岁的primigravida在妊娠39+2周时,产前检查正常,在积极分娩期间胎儿心率下降。床边超声显示22分钟后子宫内胎儿死亡。法医病理学家发现,脐带血管撕裂和出血几乎在同一平面上,血肿压迫了两个脐动脉,这是胎儿在子宫内静止的原因。共报告32例,其中脐带破裂6例,脐带血肿26例。77%的病例中血肿的病因不明,而发育不良存在于56.25%的脐带中。
    结论:此病例表明胎动可能导致脐带血管损伤,特别是当催产素用于引产时。当胎儿心音没有明显原因时,应该考虑脊髓损伤的可能性,应尽快进行剖宫产。因此,在主动分娩期间严格的胎儿心脏追踪是必要的。
    BACKGROUND: Fetal umbilical cord hematoma has a low incidence but high mortality, and its cause during delivery is often unclear. We report an autopsy case in which it was concluded that umbilical cord hematoma resulted from fetal movements during childbirth.
    UNASSIGNED: A 27-year-old primigravida at 39 + 2 weeks gestation with normal antenatal visits suffered a fetal heart rate decrease during active labor. Bedside ultrasound revealed fetal death in utero 22 min later. Forensic pathologists found that the umbilical vessels were torn and bleeding on almost the same plane, and the hematoma compressed both umbilical arteries, which is the cause of fetal stillness in utero. A total of 32 cases were reported, including 6 umbilical cord ruptures and 26 umbilical cord hematomas. The cause of hematoma was unknown in 77 % of cases, while dysplasia was present in 56.25 % of umbilical cords.
    CONCLUSIONS: This case indicates that fetal movements may cause umbilical cord vessel injury, particularly when oxytocin is used to induce labor. When fetal heart sounds decrease for no apparent reason, the possibility of cord injury should be considered, and cesarean delivery should be performed as soon as possible. Therefore, rigorous fetal heart tracing during active delivery is necessary.
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  • 文章类型: Journal Article
    本研究旨在探讨产前胎儿死亡妇女剖宫产后分娩(TOLAC)的试验,与产妇发病风险升高有关。回顾性多中心。包括单个低段切口后单胎妊娠的TOLAC。比较了产前胎儿死亡的妇女和有存活胎儿的妇女之间的产妇不良结局。根据先前的阴道分娩和引产率,将对照组与病例以1:4的比例进行匹配。单因素分析后进行多因素logistic回归建模。在学习期间,181名妇女经历了产前胎儿死亡,并与724名具有存活胎儿的妇女相匹配。单因素分析显示,产前胎儿死亡的妇女TOLAC失败率明显较低(4.4%vs.25.1%,p<0.01),但复合不良产妇结局的发生率相似(6.1%vs.8.0%,p=0.38)和子宫破裂(0.6%vs.0.3%,p=0.56)。控制混杂因素的多变量分析表明,产前胎儿死亡与活产与复合不良母婴结局无关(aOR0.96,95%CI0.21-4.44,p=0.95)。产前胎儿死亡妇女的TOLAC与不良产妇结局的风险增加无关,同时显示剖宫产后阴道分娩成功率高(VBAC)。
    This study aims to investigate whether trial of labor after cesarean delivery (TOLAC) in women with antepartum fetal death, is associated with an elevated risk of maternal morbidity. A retrospective multicenter. TOLAC of singleton pregnancies following a single low-segment incision were included. Maternal adverse outcomes were compared between women with antepartum fetal death and women with a viable fetus. Controls were matched with cases in a 1:4 ratio based on their previous vaginal births and induction of labor rates. Univariate analysis was followed by multiple logistic regression modeling. During the study period, 181 women experienced antepartum fetal death and were matched with 724 women with viable fetuses. Univariate analysis revealed that women with antepartum fetal death had significantly lower rates of TOLAC failure (4.4% vs. 25.1%, p < 0.01), but similar rates of composite adverse maternal outcomes (6.1% vs. 8.0%, p = 0.38) and uterine rupture (0.6% vs. 0.3%, p = 0.56). Multivariable analyses controlling for confounders showed that an antepartum fetal death vs. live birth isn\'t associated with the composite adverse maternal outcomes (aOR 0.96, 95% CI 0.21-4.44, p = 0.95). TOLAC in women with antepartum fetal death is not associated with an increased risk of adverse maternal outcomes while showing high rates of successful vaginal birth after cesarean (VBAC).
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