fetal loss

胎儿丢失
  • 文章类型: Journal Article
    抗磷脂综合征(APS)是以自身免疫为基础的最常见的获得性血栓形成倾向。APS的妊娠并发症可能包括复发性流产,胎盘功能障碍表现为胎儿死亡,早产,宫内生长受限和先兆子痫。对于产科APS的管理,协调的医疗和产科管理至关重要,这应该从先入为主的就诊开始,以估计个人并发症的风险,调整治疗方法,确定孕前和孕早期治疗的适应症。怀孕期间APS治疗的基础是低剂量阿司匹林,在某些临床情况下与低分子量肝素联合使用。在没有母体和/或胎儿并发症的情况下,不应常规指示分娩。应保证产后管理。
    Antiphospholipid syndrome (APS) is the most frequent acquired thrombophilia of autoimmune basis. Pregnancy complications of APS may include recurrent miscarriage, and placental dysfunction presenting as fetal death, prematurity, intrauterine growth restriction and preeclampsia. For the management of obstetric APS, a coordinated medical-obstetric management is essential, and this should start for a preconceptional visit in order to estimate the individual risk for complications, adjust therapies and establish the indications for preconceptional and first-trimester therapy. The basis of APS therapy during pregnancy is low-dose aspirin, combined in certain clinical scenarios with low-molecular weight heparin. Induction of delivery should not be routinely indicated in the absence of maternal and/or fetal complications. Postpartum management should be warranted.
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  • 文章类型: Journal Article
    背景:本研究的目的是探讨抗磷脂抗体(aPLs)和非标准aPLs(NC-aPLs)与妊娠结局的关系。
    方法:我们回顾性分析了1574例至少有一次流产的孕妇,这些孕妇接受了aPLs和NC-aPLs的检测,并比较了它们的临床特征,免疫生物标志物,和妊娠结局。χ2检验或Fisher精确检验比较了所有aPLs阴性患者的妊娠结局,对于NC‑aPL亚型,标准aPL亚型呈阳性。
    结果:多因素logistic回归分析表明,aPLs呈阳性(OR=2.216,95%CI1.381-3.558),和阳性NC-aPLs(OR=1.619,95%CI1.245-2.106)与不良结局相关。对于胎儿丢失,阳性样本(OR=2.354,95%CI1.448-3.829),NC-aPLs(OR=1.443,95%CI1.076-1.936)有统计学意义。早产与NC-aPL阳性相关(OR=2.102,95%CI1.452-3.043)。在NC-aPLs阳性组中,多阳性亚组的不良结局发生率(77.8%)高于双阳性亚组(52.3%)和单阳性亚组(37.0%).与单阳性亚组相比,多阳性NC-aPLs亚组的胎儿丢失和早产率也较高(48.1%vs.22.6%的胎儿损失和57.1%的对比早产为16.5%)。
    结论:我们的研究结果表明,aPLs和NC-aPLs均与不良妊娠结局的发生率增加有关。与单阳性对照相比,存在多个NC-aPL阳性的患者的不良结局发生率更高.
    BACKGROUND: The objective of this study was to investigate both antiphospholipid antibodies (aPLs) and non-criteria aPLs (NC-aPLs) in relation with pregnancy outcomes.
    METHODS: We retrospectively analyzed 1574 pregnant women with experienced at least one miscarriage who were tested for aPLs and NC-aPLs, and compared their clinical characteristics, immune biomarkers, and pregnancy outcomes. The χ2 test or Fisher\'s exact test compared pregnancy outcomes among patients negative for all aPLs, positive for NC‑aPLs subtypes, and positive for criteria aPLs subtypes.
    RESULTS: Multivariate logistic regression analysis indicated that positive aPLs (OR = 2.216, 95 % CI 1.381-3.558), and positive NC-aPLs (OR = 1.619, 95 % CI 1.245-2.106) are linked to adverse outcomes. For fetal loss, positive aPLs (OR = 2.354, 95 % CI 1.448-3.829), NC-aPLs (OR = 1.443, 95 % CI 1.076-1.936) were significant. Premature delivery was associated with positive NC-aPLs (OR = 2.102, 95 % CI 1.452-3.043). In the NC-aPLs positive group, the rate of adverse outcomes was higher in the multiple-positive subgroup (77.8 %) compared to the double-positive (52.3 %) and single-positive (37.0 %) subgroups. The rates of fetal loss and premature delivery were also higher in the multiple-positive NC-aPLs subgroup compared to the single-positive subgroup (48.1 % vs. 22.6 % for fetal loss and 57.1 % vs. 16.5 % for premature delivery).
    CONCLUSIONS: Our findings suggest that both aPLs and NC-aPLs are associated with an increased incidence of adverse pregnancy outcomes, and patients presenting with multiple NC-aPLs positivity were found to have a higher incidence of adverse outcomes compared to their single-positive counterparts.
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  • 文章类型: Journal Article
    在过去的三十年中,微创手术的经验积累使腹腔镜手术成为妊娠期手术病理的主要管理方法。在本元审查中,我们收集了有关怀孕期间腹腔镜和机器人辅助手术安全性的现有证据,基于相关系统评价(SR)和荟萃分析(MA)。根据预定义的选择和排除标准,使用PubMed/MEDLINE(在线医学文献分析和检索系统)和GoogleScholar对直到2024年2月以英文发表的文章进行了系统评价。我们实施了系统审查和荟萃分析(PRISMA)指南的首选报告项目,并包括对怀孕期间接受腹腔镜手术或机器人辅助腹腔镜手术(干预)的育龄妇女(人群)进行检查的SRs和MAs。与开放手术进行比较是可取的,但不是强制性的(比较)。纳入的研究必须报告胎儿丢失(结局),可选地,在胎儿的其他指标上,母性,或操作性能。我们考虑了SRs/MA分析随机试验,观察性研究,病例报告,和案例系列(研究设计)。使用多重系统评估(AMSTAR)2工具评估了不完全包括病例报告和病例系列的SRs/MA的方法学质量。共筛选1229篇,其中78人可能符合条件。其中,33篇文章符合我们的纳入标准,18只含有SR,15只含有MA的SR。检查的学科是腹腔镜阑尾切除术(10项研究,30.3%),腹腔镜环扎术治疗宫颈机能不全(八项研究,24.2%),附件-卵巢腹腔镜手术(五项研究,15.2%),腹腔镜胆囊切除术和胆道探查术(三项研究,9.1%),腹腔镜子宫肌瘤切除术(两项研究,6.1%),一项关于胰腺适应症的腹腔镜手术研究,肾上腺适应症,和减肥并发症(3.0%)。胎儿损失率的比值比/相对风险范围为0-1.9,根据学科的不同,具有不同的统计学意义。33项研究中有23项使用AMSTAR2仪器进行了质量评估,三个是“低质量”(13.0%),其余20个是“低质量”(87.0%)。总之,异质性和低质量的证据证实了腹腔镜手术治疗妊娠期手术病理的广泛接受.文献主要围绕腹腔镜阑尾切除术,而怀孕期间可能常见的其他学科,如胆囊切除术和减肥手术后的急腹症,在文学中代表性不足。可能影响手术入路的解剖学改变等因素,外科医生的专业知识,在选择合适的妊娠手术模式时,应考虑潜在病理的生物学过程。
    Accumulation of experience with minimally invasive surgery over the last three decades has rendered laparoscopic surgery the mainstay of management for surgical pathology during pregnancy. In the present meta-review, we compiled the available evidence on the safety of laparoscopic and robotic-assisted surgeries during pregnancy, based on relevant systematic reviews (SR) and meta-analyses (MA). A systematic review was performed for articles published until February 2024 in English using PubMed/MEDLINE (Medical Literature Analysis and Retrieval System Online) and Google Scholar based on predefined selection and exclusion criteria. We implemented the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and included SRs and MAs examining women of childbearing age (population) who had undergone laparoscopic surgery or robotic-assisted laparoscopic surgery during pregnancy (intervention). The presence of comparison to open surgery was desirable but not mandatory (comparator). The included studies should necessarily report on fetal loss (outcome), and optionally on other metrics of fetal, maternal, or operative performance. We considered SRs/MAs analyzing randomized trials, observational studies, case reports, and case series (study design). The methodological quality of SRs/MAs not exclusively including case reports and case series was assessed with the Assessment of Multiple Systematic Reviews (AMSTAR) 2 instrument. A total of 1229 articles were screened, of which 78 were potentially eligible. Of these, 33 articles met our inclusion criteria, 18 containing SRs only and 15 SRs with MA. The examined disciplines were laparoscopic appendectomy (10 studies, 30.3%), laparoscopic cerclage for cervical insufficiency (eight studies, 24.2%), adnexal-ovarian laparoscopic surgery (five studies, 15.2%), laparoscopic cholecystectomy and biliary tree exploration (three studies, 9.1%), laparoscopic myomectomy (two studies, 6.1%), and one study each for laparoscopic surgery regarding pancreatic indications, adrenal indications, and bariatric complications (3.0%). The odds ratio/relative risk for fetal loss rate ranged from 0-1.9, with variable statistical significance depending on the discipline. Twenty-three out of the 33 studies were submitted to quality evaluation with the AMSTAR 2 instrument, with three being of \"low quality\" (13.0%) and the remaining 20 of \"critically low quality\" (87.0%). In conclusion, the widespread acceptance of laparoscopic surgery for treating surgical pathology during pregnancy is substantiated by heterogeneous and low-quality evidence. Literature mainly revolves around laparoscopic appendectomy, whereas other disciplines that may commonly arise during pregnancy, such as cholecystectomy and the acute abdomen following bariatric surgery, are underrepresented in the literature. Factors such as anatomical alterations that may affect surgical access, surgeon\'s expertise, and the biological course of the underlying pathology should be taken into consideration when selecting the appropriate mode of operating during pregnancy.
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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
    遗传性血栓症(IT)被认为是不良妊娠结局(APO)的潜在原因。包括有或没有抗磷脂综合征(APS)的复发性流产。这项研究的目的是评估产科APS范围内妇女中IT对胎儿-母体结局和血栓形成风险的患病率和影响。包括三十八名患有APS相关产科发病率的孕妇。其中,74符合APS分类标准,169是非标准(NC)-APS,85为血清阴性(SN)-APS。排除其他自身免疫性疾病患者。APO包括早期妊娠失败,胎儿死亡,先兆子痫,胎盘早剥,和早产。成功怀孕被定义为一个活的新生儿的成就。还进行了文献检索。全组平均年龄为33.9±5.3岁,随访35(11~79)个月。在学习期间,有1332次怀孕。近14%的患者有相关的IT。IT患者更频繁地接受标准护理(SoC)治疗。在接受SoC治疗的患者中,IT的存在与母胎结局恶化无关。总的来说,IT患者未经治疗的新生儿频率较低,尤其是那些没有明确APS的人。此外,IT在怀孕期间或产后期间不会增加血栓形成的风险。对文献综述的详细分析仅确定了与我们的研究相关的四个出版物,并且没有显示IT对产科APS患者影响的确凿证据。与APS相关的产科发病率和IT没有接受治疗的妇女组,尤其是那些没有明确APS的人,在活产方面预后较差。然而,使用SoC疗法,无IT患者的预后相似.IT与APS的关联似乎并不容易在怀孕和/或产后期发生血栓形成。
    Inherited thrombophilia (IT) has been implicated as a potential causal factor of adverse pregnancy outcomes (APOs), including recurrent miscarriage with and without the presence of antiphospholipid syndrome (APS). The aim of this study was to assess the prevalence and impact of IT on fetal-maternal outcomes and thrombotic risk in women within the spectrum of obstetric APS. Three hundred and twenty-eight women with APS-related obstetric morbidity ever pregnant were included. Of these, 74 met the APS classification criteria, 169 were non-criteria (NC)-APS, and 85 were seronegative (SN)-APS. Patients with other autoimmune diseases were excluded. APOs included early pregnancy loss, fetal death, preeclampsia, abruptio placentae, and preterm birth. Successful pregnancy was defined as the achievement of a live newborn. A literature search was also performed. The mean age of the overall group was 33.9 ± 5.3 years, and the patients were followed up for 35 (11-79) months. During the study period, there were 1332 pregnancies. Nearly 14% of the patients had an associated IT. IT patients more frequently received the standard-of-care (SoC) therapy. The presence of IT was not associated with worse maternal-fetal outcomes in patients treated with SoC treatment. Overall, IT patients had a lower frequency of newborns without treatment, especially those without definite APS. In addition, IT did not increase the risk of thrombosis during pregnancy or the postpartum period. A detailed analysis of the literature review identified only four publications related to our study and did not show conclusive evidence of the impact of IT on patients with obstetric APS. The group of women with APS-related obstetric morbidity and IT who did not receive treatment, especially those without definite APS, had a worse prognosis in terms of a live birth. However, with SoC therapy, the prognosis is similar in those patients without IT. The association of IT with APS does not seem to predispose to the development of thrombosis during pregnancy and/or the postpartum period.
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  • 文章类型: Journal Article
    背景:系统性红斑狼疮(SLE)女性的妊娠在母婴结局方面仍然是临床医生面临的巨大挑战。预先存在狼疮性肾炎(LN)的女性的结局是可变的。妊娠期间不同类型的LN对母婴结局的影响尚不明确,由于数据非常稀缺,特别是来自发展中国家。
    方法:对52例89例妊娠妇女进行回顾性分析。都有活检证实的LN。包括那些在诊断后至少6个月怀孕的妇女。该分析于1998年7月至2018年6月在信德省泌尿外科和移植研究所(SIUT)进行。评估母亲和胎儿的结局,最低随访时间为分娩后12个月。
    结果:诊断为SLE的产妇平均年龄为21.45±6岁,首次妊娠为26.49±5.63岁。平均病程为14.02±19.8个月。在受孕时,47名(52.8%)女性患有高血压,9(10%)患有活动性疾病,而38(42.7%)和42(47.2%)完全缓解和部分缓解,分别。共有17例(19.1%)服用霉酚酸酯(MMF),改用硫唑嘌呤(AZA)。在89次怀孕中,56(62.9%)成功,33人(37.07%)有自然流产等胎儿并发症,死产,围产期死亡,和宫内发育迟缓(IUGR)。阴道分娩(33例[58.92%])多于剖腹产(23例[41.07%])。在33名(37.1%)妇女中观察到肾脏耀斑,而15名(16.9%)患有先兆子痫。在56例(62.9%)中发现了增殖性LN,但在LN等级相关的母体和胎儿结局中没有发现显著差异(p=0.58).然而,受孕时患有活动性疾病的患者在12个月时的疾病结局明显较差(p<.05)。只有一个产妇死亡。共有10名(11.2%)妇女在12个月时表现出肾功能恶化,其中5名(5.6%)是透析依赖性的。
    结论:预先存在的LN的母体和胎儿结局取决于受孕时的疾病活动。在国际肾脏病学会/肾病理学学会(ISN/RPS)的LN类别与不良疾病和妊娠结局之间没有发现相关性。
    BACKGROUND: Pregnancy in women with systemic lupus erythematosus (SLE) has remained a great challenge for clinicians in terms of maternal and fetal outcomes. The outcomes in women with pre-existing lupus nephritis (LN) are variable. The impact of different classes of LN on maternal and fetal outcomes during pregnancy is not well defined, as data is very scarce, especially from the developing countries.
    METHODS: A retrospective analysis was conducted on 52 women with 89 pregnancies. All had biopsy-proven LN. Those women who conceived at least 6 months after the diagnosis were included. The analysis was conducted between July 1998 and June 2018 at Sindh Institute of Urology and Transplantation (SIUT), evaluating the outcomes for both the mother and the fetus with a minimum follow-up of 12 months after child birth.
    RESULTS: The mean maternal age at SLE diagnosis was 21.45 ± 6 years and at first pregnancy was 26.49 ± 5.63 years. The mean disease duration was 14.02 ± 19.8 months. At conception, 47 (52.8%) women were hypertensive, 9 (10%) had active disease while 38 (42.7%) and 42 (47.2%) were in complete and partial remission, respectively. A total of 17 (19.1%) were on mycophenolate mofetil (MMF), which was switched to azathioprine (AZA). Out of 89 pregnancies, 56 (62.9%) were successful, while 33 (37.07%) had fetal complications like spontaneous abortion, stillbirth, perinatal death, and intrauterine growth retardation (IUGR). There were more vaginal deliveries (33 [58.92%]) than caesarean sections (23 [41.07%]). Renal flare was observed in 33 (37.1%) women while 15 (16.9%) developed pre-eclampsia. Proliferative LN was found in 56 (62.9%) cases, but no significant differences were found in maternal and fetal outcomes in relation to LN classes (p = .58). However, disease outcomes at 12 months were significantly poor in those with active disease at the time of conception (p < .05). There was only one maternal death. A total of 10 (11.2%) women showed deterioration in renal function and 5 (5.6%) were dialysis-dependent at 12 months.
    CONCLUSIONS: The maternal and fetal outcomes in pre-existing LN depend on the disease activity at the time of conception. No correlation was found between International Society of Nephrology/Renal Pathology Society (ISN/RPS) classes of LN and adverse disease and pregnancy outcomes.
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  • 文章类型: Case Reports
    可逆性后部脑病综合征(PRES)可以定义为头痛的临床综合征,癫痫发作,视觉障碍,精神状态改变,和特征性磁共振成像(MRI)发现后皮质下顶叶-枕骨白质血管源性水肿。有许多潜在的煽动因素,包括免疫抑制,肾脏疾病,恶性肿瘤,细胞毒性药物,高血压,先兆子痫,和子痫。在本文中,我们介绍了1例21岁女性,在妊娠19周时,其症状与具有严重特征和PRES的先兆子痫一致.她在初步稳定后被转移到我们的设施。她在妊娠20周前有不典型的先兆子痫病程,PRES缺乏癫痫发作活动,最终她的病例导致胎儿宫内死亡(IUFD)在妊娠20周和6天。正如它的名字所示,PRES被认为是一种完全可逆的综合征,患者在高血压疾病稳定和胎儿分娩后康复。这种情况说明了迅速识别和治疗妊娠患者高血压疾病的重要性,以及可能导致母亲和胎儿的大量发病率和死亡率的并发症的可能性。
    Posterior reversible encephalopathy syndrome (PRES) can be defined as a clinical syndrome of headache, seizures, visual disturbance, altered mental status, and characteristic magnetic resonance imaging (MRI) findings of vasogenic edema in the posterior subcortical parietal-occipital white matter. There are numerous potential inciting factors, including immunosuppression, renal disease, malignancy, cytotoxic medications, hypertension, preeclampsia, and eclampsia. In this paper, we present the case of a 21-year-old female at 19 weeks gestation presenting with symptoms consistent with preeclampsia with severe features and PRES. She was transferred to our facility after initial stabilization. She had an atypical course of preeclampsia prior to 20 weeks gestation, PRES lacking seizure activity, and ultimately her case resulted in intrauterine fetal demise (IUFD) at 20 weeks and six days gestation. As indicated by its name, PRES is considered a fully reversible syndrome, and the patient recovered after stabilization of her hypertensive disorder and delivery of the fetus. This case illustrates the importance of prompt recognition and treatment of hypertensive disorders in pregnant patients and the possibility of complications that can result in significant morbidity and mortality for both the mother and fetus.
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  • 文章类型: Journal Article
    背景:对于需要大剂量华法林的机械心脏瓣膜(MHV)孕妇,最佳的孕早期抗凝治疗仍然具有挑战性。这项多中心前瞻性研究旨在确定妊娠MHV患者的最佳抗凝方案。
    方法:所有妇女在孕早期被分配到三种治疗方案之一,包括单用低分子量肝素(LMWH),LMWH+2.5mg华法林的组合,和LMWH+4毫克华法林。主要的产妇结局包括死亡的组合,血栓栓塞,严重出血,并且需要治疗机械瓣膜血栓形成(MVT)。任何胎儿丢失都被确定为主要的胎儿结局。
    结果:该研究包括65例MHV女性的78例妊娠。主要产妇结局率为44%,12.5%,3.5%,分别。主要产妇结局的发生率(44vs3.5%,p<0.001),阻塞性MVT(16vs0%,p=0.04),需要治疗的MVT(28vs0%,p=0.003),和脑栓塞(24vs3.4%,与LMWH4mg华法林组相比,单独LMWH组的p=0.041)明显更高。此外,主要产妇结局率(12.5vs44%,p=0.015)和MHV血栓的治疗(4.2vs28%,p=0.049)与单独的LMWH组相比,LMWH2.5mg华法林组明显更低。在单独的LMWH组中,胎儿丢失的发生率为8(32%),8(33.3%)在LMWH+2.5mg华法林组,LMWH+4mg华法林组11例(37.9%)(3组p=0.890)。在任何情况下均未观察到华法林相关胚胎病。
    结论:在妊娠早期,LMWH联合低剂量华法林的联合抗凝策略可能导致MHV患者的母体并发症较少,胎儿结局相当。
    结论:低分子量肝素(LMWH)被认为对胎儿更安全,然而,怀疑它对母亲的保护作用较弱。为了解决这个困境,作者提出了一种用于有人工瓣膜的孕妇的新型抗凝策略.该研究包括65名妇女的78例怀孕[中位年龄32(27-35)岁]。LMWH和减少剂量的华法林的组合与患有机械心脏瓣膜的怀孕患者的血栓相关并发症的低发生率相关。
    Optimal first-trimester anticoagulation is still challenging in pregnant women with mechanical heart valves (MHVs) requiring high-dose warfarin. This multicenter prospective study aims to determine the optimal anticoagulation regimens for pregnant patients with MHVs.
    All women were allocated to one of three treatment options during first trimester including lone low-molecular-weight heparin (LMWH), combination of LMWH + 2.5 mg warfarin, and LMWH+4 mg warfarin. Primary maternal outcome included a combination of death, thromboembolism, severe bleeding, and need for treatment of mechanical valve thrombosis (MVT). Any fetal loss was determined as primary fetal outcome.
    The study included 78 pregnancies in 65 women with MHVs. Primary maternal outcome rate was 44%, 12.5%, 3.5%, respectively. The rates of primary maternal outcome (44 vs 3.5%, P < .001), obstructive MVT (16 vs 0%, P = .04), MVT requiring treatment (28 vs 0%, P = .003), and cerebral embolism (24 vs 3.4%, P = .041) were found to be significantly higher in lone LMWH group compared to LMWH + 4 mg warfarin group. Moreover, the rates of primary maternal outcome (12.5 vs 44%, P = .015) and treatment for MHV thrombus (4.2 vs 28%, P = .049) were significantly lower in LMWH + 2.5 mg warfarin group compared to lone LMWH group. The incidences of fetal loss were 8 (32%) in the lone LMWH group, 8 (33.3%) in LMWH + 2.5 mg warfarin group, and 11 (37.9%) in LMWH + 4 mg warfarin group (P = .890 for 3-group).Warfarin related-embryopathy was not observed in any case.
    The combined anticoagulation strategy of LMWH plus low-dose warfarin during the first trimester of pregnancy may result in less maternal complications with comparable fetal outcomes in patients with MHVs.
    Low-molecular-weight heparin (LMWH) is thought to be safer for the fetus, however it is suspected to be less protective for the mother. To solve this dilemma, the authors suggested a novel anticoagulation strategy in pregnant women with prosthetic valves. Seventy-eight pregnancies of 65 women (median age 32 [27-35] years) were included in the study. A combination of LMWH and a reduced dose warfarin were associated with low rates of thrombus-related complications in pregnant patients with mechanical heart valves.
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  • 文章类型: Journal Article
    目的:妊娠失败是任何哺乳动物的主要健身成本,特别是那些生活史缓慢的人,如灵长类动物。这里,我们量化了野生杂种狒狒胎儿丢失的风险,包括遗传,生态,和差异的人口统计来源。我们对检验杂交增加胎儿损失率的假设特别感兴趣。这种效应将有助于解释狒狒如何保持遗传和表型完整性,尽管种间基因流动。
    方法:我们分析了在自然的黄色狒狒-anubis狒狒杂种区,在46年中观察到的1020次怀孕的结果。根据女性生殖状态的记录和活产新生儿的出现对胎儿损失和活产进行评分。我们将胎儿丢失的概率建模为女性遗传祖先的函数(估计她的基因组比例来自阿努比[与黄色]祖先),年龄,先前胎儿损失的数量,优势等级,组大小,气候,和生境质量使用二项混合效应模型。
    结果:女性遗传祖先不能预测胎儿丢失。相反,非常年轻和非常年老的女性胎儿丢失的风险增加。胎儿损失是生态因素最有力的预测,包括家庭范围转移之前的栖息地质量差和怀孕期间的极端高温。
    结论:我们的研究结果表明,杂交母鼠的胎儿丢失风险增加不会阻碍黄狒狒和无乳狒狒之间的基因流动。相反,生态条件和女性年龄是女性生殖成功的关键因素。
    Pregnancy failure represents a major fitness cost for any mammal, particularly those with slow life histories such as primates. Here, we quantified the risk of fetal loss in wild hybrid baboons, including genetic, ecological, and demographic sources of variance. We were particularly interested in testing the hypothesis that hybridization increases fetal loss rates. Such an effect would help explain how baboons may maintain genetic and phenotypic integrity despite interspecific gene flow.
    We analyzed outcomes for 1020 pregnancies observed over 46 years in a natural yellow baboon-anubis baboon hybrid zone. Fetal losses and live births were scored based on records of female reproductive state and the appearance of live neonates. We modeled the probability of fetal loss as a function of a female\'s genetic ancestry (the proportion of her genome estimated to be descended from anubis [vs. yellow] ancestors), age, number of previous fetal losses, dominance rank, group size, climate, and habitat quality using binomial mixed effects models.
    Female genetic ancestry did not predict fetal loss. Instead, the risk of fetal loss is elevated for very young and very old females. Fetal loss is most robustly predicted by ecological factors, including poor habitat quality prior to a home range shift and extreme heat during pregnancy.
    Our results suggest that gene flow between yellow and anubis baboons is not impeded by an increased risk of fetal loss for hybrid females. Instead, ecological conditions and female age are key determinants of this component of female reproductive success.
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