birth

出生
  • 文章类型: Journal Article
    背景:有一个新的需要,系统地调查希腊剖宫产率增加的原因,并采取干预措施,以大幅降低剖宫产率。为此,将探讨参与的希腊产科医生在管理劳动时遵循循证指南并应对其他教育和行为干预措施的能力,以及障碍和推动者。本文讨论的是希腊产科的阶梯式楔形设计干预试验的方案,并牢记上述目标,名为ENGAGE(希腊的ENhancinGvaginaldelevery)。
    方法:希腊的22个选定的产妇单位将参加一项涉及20,000至25,000个分娩的多中心阶梯式随机前瞻性试验,其中两个人每月进入研究的干预期(逐步随机化)。进入研究的产妇护理单位将根据他们进入研究干预阶段的时间将建议的干预措施应用8-18个月。研究的初始阶段还将持续8至18个月,包括观察和记录常规实践(剖宫产,阴道分娩,以及参与单位的孕产妇和围产期发病率和死亡率)。第二阶段,干预期,将包括诸如HSOG(希腊妇产科学会)劳动管理指南的应用等干预措施,关于正确解释心电图的培训,处理阴道分娩中的紧急情况,虽然指导委员会成员将可以讨论和实施组织和行为的变化,回答问题,澄清相关问题,并在定期访问或视频会议期间向参与的医疗保健专业人员提供实际指导。此外,在研究过程中,结果将提供给参与单位,以便他们监测自己的表现,同时也收到关于他们费率的反馈。该研究的最后2个月阶段将致力于完成随访问卷,其中包含干预期结束后发生的孕产妇和新生儿发病率数据。研究的总持续时间估计为28个月。评估的主要结果将是剖宫产率的变化,次要结果将是孕产妇和新生儿的发病率和死亡率。
    结论:该研究预计将产生有关影响的新信息,优势,可能性,以及持续的临床参与和行为实施的挑战,教育,和组织干预措施在希腊剖宫产手术方案中详细描述。这些结果可能会对提高孕产妇和新生儿护理质量的方法产生新的见解,特别是因为这代表了降低希腊高剖宫产率的共同努力,此外,为他们在其他国家的减少指明了道路。
    背景:NCT04504500(ClinicalTrials.gov)。该试验进行了前瞻性登记。伦理参考号:320/23.6.2020,生物伦理和行为委员会,医学院,雅典国立和卡波迪斯大学,雅典,希腊。
    BACKGROUND: There is an emerging need to systematically investigate the causes for the increased cesarean section rates in Greece and undertake interventions so as to substantially reduce its rates. To this end, the ability of the participating Greek obstetricians to follow evidence-based guidelines and respond to other educational and behavioral interventions while managing labor will be explored, along with barriers and enablers. Herein discussed is the protocol of a stepped-wedge designed intervention trial in Greek maternity units with the aforementioned goals in mind, named ENGAGE (ENhancinG vAGinal dElivery in Greece).
    METHODS: Twenty-two selected maternity units in Greece will participate in a multicenter stepped-wedge randomized prospective trial involving 20,000 to 25,000 births, with two of them entering the intervention period of the study each month (stepped randomization). The maternity care units entering the study will apply the suggested interventions for a period of 8-18 months depending on the time they enter the intervention stage of the study. There will also be an initial phase of the study lasting from 8 to 18 months including observation and recording of the routine practice (cesarean section, vaginal birth, and maternal and perinatal morbidity and mortality) in the participating units. The second phase, the intervention period, will include such interventions as the application of the HSOG (the Hellenic Society of Obstetrics and Gynecology) Guidelines on labor management, training on the correct interpretation of cardiotocography, and dealing with emergencies in vaginal deliveries, while the steering committee members will be available to discuss and implement organizational and behavioral changes, answer questions, clarify relevant issues, and provide practical instructions to the participating healthcare professionals during regular visits or video conferences. Furthermore, during the study, the results will be available for the participating units in order for them to monitor their own performance while also receiving feedback regarding their rates. Τhe final 2-month phase of the study will be devoted to completing follow-up questionnaires with data concerning maternal and neonatal morbidities that occurred after the completion of the intervention period. The total duration of the study is estimated at 28 months. The primary outcome assessed will be the cesarean section rate change and the secondary outcomes will be maternal and neonatal morbidity and mortality.
    CONCLUSIONS: The study is expected to yield new information on the effects, advantages, possibilities, and challenges of consistent clinical engagement and implementation of behavioral, educational, and organizational interventions described in detail in the protocol on cesarean section practice in Greece. The results may lead to new insights into means of improving the quality of maternal and neonatal care, particularly since this represents a shared effort to reduce the high cesarean section rates in Greece and, moreover, points the way to their reduction in other countries.
    BACKGROUND: NCT04504500 (ClinicalTrials.gov). The trial was prospectively registered. Ethics Reference No: 320/23.6.2020, Bioethics and Conduct Committee, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
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  • 文章类型: Journal Article
    目的:在本研究中,调查了日本非机构分娩与新生儿和婴儿死亡率的关系,以及非机构分娩的社会人口统计学特征.
    方法:使用了日本的生命统计数据(2012年至2021年的出生数据和2012年至2022年的死亡率数据)。根据出生地和接生员将出生分为三种类型:机构出生,医生或助产士的非机构分娩,以及没有医生或助产士的非机构分娩。为了研究出生类型与新生儿和婴儿死亡率之间的关联以及社会人口统计学特征与出生类型之间的关联,使用了改良的Poisson回归。
    结果:分析中使用了9,422,942例新生儿。调查出生类型与新生儿和婴儿死亡率之间关系的回归分析结果表明,无论医生或助产士的出诊与否,非机构分娩与新生儿和婴儿死亡率呈正相关。此外,非机构出生预测因素的回归分析结果表明,非城市地区等因素,老年产妇年龄组,母亲的未婚状况与两种非机构分娩呈正相关,非日本母亲与非机构分娩呈正相关,没有医生或助产士。
    结论:非机构分娩是新生儿和婴儿死亡率的预测指标,无论医生或助产士是否出诊,一些社会人口统计学特征已被证明是非机构出生的预测因素。
    OBJECTIVE: In this study, the association of non-institutional births with neonatal and infant mortality in Japan was investigated as well as sociodemographic characteristics of non-institutional births.
    METHODS: The Vital Statistics data in Japan (the birth data from 2012 to 2021 and mortality data from 2012 to 2022) were used. Births were classified into three types based on the place of birth and birth attendant: institutional births, non-institutional births with a physician or a midwife, and non-institutional births without a physician or a midwife. Modified Poisson regression was used in order to investigate the association between the type of birth and neonatal and infant mortality and the association between sociodemographic characteristics and the type of birth.
    RESULTS: A total of 9,422,942 births were used in the analysis. The results of regression analysis investigating an association between the type of birth and neonatal and infant mortality showed that non-institutional births were positively associated with neonatal and infant mortality regardless of the attendance of a physician or a midwife. Furthermore, the results of regression analysis investigating predictors of non-institutional births showed that factors such as non-urban regions, older maternal age groups, and unmarried status of mothers were positively associated with the two types of non-institutional births, and non-Japanese mother was positively associated with non-institutional births without a physician or a midwife.
    CONCLUSIONS: Non-institutional births were a predictor of neonatal and infant mortality regardless of the attendance of a physician or midwife, and some sociodemographic characteristics have been proven to be predictors of non-institutional births.
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  • 文章类型: Letter
    暂无摘要。
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  • 文章类型: Journal Article
    在过去的几十年中,延迟脐带夹紧(DCC)在美国被广泛采用。这种做法有可能在人口健康水平上改善婴儿健康和结果。教育运动和政策干预可以以安全的方式促进DCC的使用。
    Deferred umbilical cord clamping (DCC) has been employed with wide variation in the United States over the last few decades. This practice has the potential to improve infant health and outcomes at the population health level. Education campaigns and policy interventions can promote DCC use in a safe manner.
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  • 文章类型: Journal Article
    背景:分娩教育,在Salutogenesis的支持下,提出了孕产妇保健的范式转变。目前没有关于接受过Salutary分娩教育的妇女的产妇经历的信息。
    目的:本研究旨在深入探究女性的妊娠状况,参加“Salutary分娩教育计划”的出生和产后经历,并阐明了Salutogeness促进孕产妇健康的机制。
    方法:对15名母亲进行了描述性定性研究。这项研究是在2023年4月至10月期间进行的。数据是通过半结构化、深入的个人纵向访谈,涵盖所有产妇期。进行了专题分析。
    结果:女性表示,她们“获得了以正常为导向的观点”,这提供了“对这一时期的积极意义”和“摆脱了对风险焦点的关注”。妇女经历了这一过程的自然性,并处于流动之中。他们描述说,他们“意识到自己的内部资源”,并获得了“资源建设技能”和“管理时期的能力”。除了获得的自主权之外,“情感力量”和“自己的投资能力”为他们提供了一种积极参与经验的力量。
    结论:本研究探讨了参加Salutary分娩教育计划的妇女的经历,并描述了该计划的组成部分对其经历的机制。通过这样做,它的目的是增进对医疗保健专业人员如何通过使用Salutogenesis模型提供有效的分娩教育的理解。
    作者要感谢并感谢参加教育计划并愿意接受采访的女性。
    BACKGROUND: Childbirth education, underpinned by Salutogenesis, presents a paradigm shift in maternal care. There was no present information about the maternal experiences of women who had received Salutary childbirth education.
    OBJECTIVE: The present study aimed to deeply explore women\'s pregnancy, birth and postnatal experiences who attended the \'Salutary Childbirth Education Program\' and shed light on the mechanisms of Salutogenesis on maternal health promotion.
    METHODS: A descriptive qualitative study was conducted with 15 mothers. The study was conducted during April-October 2023. Data were obtained through semi-structured, in-depth individual longitudinal interviews to cover all maternal periods. A thematic analysis was performed.
    RESULTS: Women stated that they \'acquired normality oriented perspective\' which provides \'attribution of positive meanings to the period\' and \'freedom from their risk focus concerns\'. Women experienced the naturality of the process and were in the flow. They described that they became \'aware of their internal resources\', and gained \'skills for the construction of resources\' and \'ability to manage the period\'. The \'emotional strength\' and \'Investment ability for themselves\' in addition to obtained autonomy provided them a feeling of strength to actively engage in their experience.
    CONCLUSIONS: This study explores the experiences of women who participated in the Salutary Childbirth Education Program and describes the mechanisms of the program\'s components on their experiences. By doing so, it aims to enhance understanding of how healthcare professionals can present effective childbirth education through the use of the Salutogenesis Model.
    UNASSIGNED: The authors would like to acknowledge and thank the women who attended the education program and were willing to interview.
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  • 文章类型: Journal Article
    最密集的营养需求发生在牛奶生产高峰期。母羊牛奶比牛奶含有更多的蛋白质和脂肪。营养因素显著决定了组成。肝脏在哺乳期间承受高压力,但被必需的营养素缓解。胆碱在代谢上充当脂溶性药物。这种化合物在细胞结构构建中起作用,维护,和乙酰胆碱合成。动物营养行业提供各种来源的胆碱,如合成和天然种类。这项研究评估了两种不同的胆碱来源对奶牛围产期和产后产奶量的影响,composition,和后代的成长。
    二十四只朗布依埃母羊,每个重约63.7±1.7公斤,三岁,之前有两个孩子,在单独的围栏(2×2m)中度过了30天的产前和产后。根据随机设计,他们在出生前和出生后30天给予不同的实验治疗;没有胆碱(a),4克/天瘤胃保护胆碱(RPC)(b),或4克/天硫代胆碱(C)。在牛奶收集期间,每30天采集用于牛奶组成和长链脂肪酸(FA)分析的牛奶样品。
    母羊体重的显着差异(p<0.05),羔羊出生体重,由于胆碱治疗,在羔羊和哺乳期第30天观察到30天龄的羔羊体重。产奶量(1.57公斤/天)明显高于对照(1.02公斤/天)和RPC(1.39公斤/天),由于草药胆碱的来源。牛奶的蛋白质没有显著差异,乳糖,脂肪,非脂肪固体,和处理之间的总乳固体含量。草药胆碱降低(p<0.05)己酸的浓度,辛酸,Capric,月桂,和肉豆蔻酸,同时增强(p<0.05)油酸和顺式-11-二十碳烯酸,影响长链FA水平的变化(p<0.05)。
    从两种来源向母羊提供胆碱可以提高产奶量和产奶量以及产奶量和产奶量。草药胆碱补充剂改变了短链牛奶FAs,而代表性的浓度途径影响中链途径。
    UNASSIGNED: The most intensive nutritional requirements occur during milk production\'s peak. Ewe milk contains more protein and fat than cow milk. The nutritional factors significantly determine the composition. The liver undergoes high stress during lactation but is relieved by essential nutrients. Choline acts metabolically as a lipotrope. This compound functions in cell structure construction, maintenance, and acetylcholine synthesis. The animal nutrition industry provides choline from various sources, such as synthetic and natural kinds. This study evaluated the influence of two distinct choline sources on dairy ewes\' peripartum and postpartum milk production, composition, and offspring growth.
    UNASSIGNED: Twenty-four Rambouillet ewes, each weighing around 63.7 ± 1.7 kg, aged three with two previous births, spent 30-day pre-partum and post-partum in individual pens (2 × 2 m). They were given different experimental treatments 30 days before and after birth according to a randomized design; no choline (a), 4 g/day rumen-protected choline (RPC) (b), or 4 g/day thiocholine (c). Milk samples for milk composition and long-chain fatty acid (FA) analysis were taken every 30 days during milk collection.
    UNASSIGNED: Significant differences (p < 0.05) in ewe body weight, lamb birth weight, and 30-day-old lamb body weight were observed at lambing and on day 30 of lactation due to choline treatment. Milk yield was significantly higher (1.57 kg/day) compared to the control (1.02 kg/day) and RPC (1.39 kg/day), due to the herbal choline source. There was no significant difference in the milk\'s protein, lactose, fat, non-fat solids, and total milk solids content between the treatments. Herbal choline lowers (p < 0.05) the concentrations of caproic, caprylic, capric, lauric, and myristic acids while boosting (p < 0.05) those of oleic and cis-11-eicosenoic acid, the changes influencing long-chain FA levels (p < 0.05).
    UNASSIGNED: Providing choline from both sources to ewes enhanced milk production and body weight at lambing and on 30-day post-lambing. The herbal choline supplement altered short-chain milk FAs, while representative concentration pathways affected medium-chain ones.
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  • 文章类型: Journal Article
    背景:由于美国卫生劳动力短缺,农村居民获得与妊娠相关和分娩相关的医疗保健的机会受到限制。虽然助产士是怀孕和分娩护理的关键提供者,农村助产劳动力的现状还没有得到很好的理解。这项分析的目的是描述美国农村社区当地助产护理的可用性。
    方法:我们对目前或最近关闭分娩服务的美国农村医院进行了一项全国性调查。2021年3月至8月,对292所乡村医院的妇产科管理人员或管理人员进行了调查,其中133所医院做出了回应(回应率为46%;目前有93所提供分娩服务,40个最近关闭的分娩服务)。这项横断面分析描述了拥有当前或先前分娩服务的农村医院是否在当地提供有认证的护士助产士的助产护理,以及是否有和没有助产护理的农村社区是否在医院和县级特征上有所不同。
    结果:在接受调查的医院中,目前有55%的人和以前有分娩服务的人中有75%的人报告没有当地可用的助产护理。在目前有医院分娩服务的93个农村社区中,那些没有助产护理的人更有可能有较低的人口(37%比33%);大多数人口是黑人,土著,和有色人种(24%对10%);以及至少50%的分娩由医疗补助资助的医院(77%对64%),与有助产护理的社区相比。相反,在有助产护理的社区中,超过30%的患者为医院分娩服务超过30英里(38%对28%).
    结论:超过一半的接受调查的乡村医院报告没有当地可用的助产护理,和可用性因医院和县级特点而异。确保农村分娩者获得怀孕和分娩护理的努力应包括注意当地助产护理的可用性。
    BACKGROUND: Access to pregnancy-related and childbirth-related health care for rural residents is limited by health workforce shortages in the United States. Although midwives are key pregnancy and childbirth care providers, the current landscape of the rural midwifery workforce is not well understood. The goal of this analysis was to describe the availability of local midwifery care in rural US communities.
    METHODS: We developed and conducted a national survey of rural US hospitals with current or recently closed childbirth services. Maternity unit managers or administrators at 292 rural hospitals were surveyed from March to August 2021, with 133 hospitals responding (response rate 46%; 93 currently offering childbirth services, 40 recently closed childbirth services). This cross-sectional analysis describes whether rural hospitals with current or prior childbirth services had midwifery care with certified nurse-midwives available locally and whether rural communities with and without midwifery care differed by hospital-level and county-level characteristics.
    RESULTS: Among hospitals surveyed, 55% of those with current and 75% of those with prior childbirth services reported no locally available midwifery care. Of the 93 rural communities with current hospital-based childbirth services, those without midwifery care were more likely to have lower populations (37% vs 33%); majority populations that were Black, Indigenous, and people of color (24% vs 10%); and hospitals where at least 50% of births were Medicaid funded (77% vs 64%), compared with communities with midwifery care. Conversely, communities with midwifery care more often had greater than 30% of patients traveling more than 30 miles for hospital-based childbirth services (38% vs 28%).
    CONCLUSIONS: More than half of rural hospitals surveyed reported no locally available midwifery care, and availability differed by hospital-level and county-level characteristics. Efforts to ensure pregnancy and childbirth care access for rural birthing people should include attention to the availability of local midwifery care.
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  • 文章类型: Journal Article
    背景:颅内出生相关的硬膜下出血常发生在无症状新生儿中,没有不良的长期后遗症。将出生相关的硬膜下出血与颅内出血的其他病理原因区分开来在医学和医学上都很重要。关于出生相关硬膜下出血发生率的文献有限,它的成像特征,随着时间的推移和进化,主要是因为无症状的婴儿不常规进行头颅MRI检查。
    目的:建立出生相关硬膜下出血的发生率和分布,并评估其与各种分娩方式的关系。识别相关特征,并评估MRI上出生相关出血信号变化的顺序演变。
    方法:本回顾性研究共纳入200例健康足月新生儿和小婴儿。所有婴儿在出生后0-2个月时接受了脑和颈椎的MRI,并获得了3DT1加权(T1W),3D或2DT2加权(T2W),和轴向弥散加权成像(DWI)序列。扫描评估硬膜下出血的存在和分布,其他颅内出血,和相关的伤害。分析各种分娩方式下颅内出血的发生率。T1W上出血的信号强度之间的关系,T2W,和DWI扫描并分析了婴儿的年龄。应用适当的测试来测试数据的统计显著性。
    结果:在200名新生儿中,66(33%)在MRI上可检测到颅内出血,年龄范围为11-25天,包括31名(47%)男性和35名(53%)女性。他们都有硬膜下出血,其中54例(81.8%)位于后颅窝。在少数人中出现了额外的实质性出血,但没有蛛网膜下腔出血,颈椎管出血,皮质桥静脉损伤,或颈椎韧带损伤在研究的限制范围内被确定。在25天以上的受试者中未发现可检测到的颅内出血。按分娩方式划分的硬膜下出血的总发生率在剖宫产分娩的婴儿中为8/68(11.8%),在阴道分娩的婴儿中为58/132(43.9%)。在阴道分娩中,辅助阴道分娩的发生率最高(19/30,63.3%).出生相关硬膜下出血的受试者分为三个年龄组:<13天,13-21天,>21天所有检测到的出血均为T1W高强度。在<13天的组中,所有出血均为T2W低信号。在13-21天组中,73.1%为T2W低信号,而26.9%为T2W混合。>21天组的所有出血均为T2W低信号。在13-21天组中发现了所有DWI高强度出血。
    结论:出生相关的硬膜下出血发生在超过三分之一的正常分娩中,并且具有特征性分布,主要在后窝。相关的颈椎硬膜下出血,颈椎韧带损伤,或皮质桥接静脉损伤,这与创伤性病因有关,未被识别。与出生相关的硬膜下出血遵循MRI上信号变化的特征性模式。虽然不完全可靠,这有助于将它们与通常在出生后发生的创伤性颅内出血区分开来。在我们的队列中,25天后未发现与出生相关的硬膜下出血。
    BACKGROUND: Intracranial birth-related subdural hemorrhage frequently occurs in asymptomatic newborns and has no adverse long-term sequelae. It is medically and medicolegally important to differentiate birth-related subdural hemorrhage from other pathological causes of intracranial hemorrhage. There is limited literature available on the incidence of birth-related subdural hemorrhage, its imaging features, and evolution over time, mainly because asymptomatic infants do not routinely undergo cranial MRI.
    OBJECTIVE: To establish the incidence and distribution of birth-related subdural hemorrhage and evaluate their association with various modes of delivery, identify associated features, and evaluate the sequential evolution of signal changes of the birth-related hemorrhages on MRI.
    METHODS: A total of 200 healthy term neonates and young infants were included in this retrospective review study. All infants underwent MRI of the brain and cervical spine at postnatal age of 0-2 months with acquisition of a 3D T1-weighted (T1W), 3D or 2D T2-weighted (T2W), and axial diffusion-weighted imaging (DWI) sequences. The scans were evaluated for the presence and distribution of subdural hemorrhages, other intracranial hemorrhages, and associated injuries. Prevalence of intracranial hemorrhage in various modes of delivery was analyzed. Relationship between the signal intensities of the bleeds on T1W, T2W, and DWI scans and the age of the infants was analyzed. Appropriate tests were applied to test for statistical significance of the data.
    RESULTS: Out of 200 neonates, 66 (33%) had detectable intracranial hemorrhage on MRI with an age range of 11-25 days, including 31 (47%) males and 35 (53%) females. All of them had subdural hemorrhages, 54 (81.8%) of which were in the posterior fossa. Additional parenchymal hemorrhages were present in a few, but no subarachnoid hemorrhages, cervical spinal canal hemorrhages, cortical bridging vein injury, or cervical spinal ligamentous injury were identified within the limitations of the study. No detectable intracranial hemorrhage was found in subjects above 25 days of age. Overall incidence of subdural hemorrhage by mode of delivery was 8/68 (11.8%) in babies born by cesarean section and 58/132 (43.9%) in babies born by vaginal delivery. Among the vaginal deliveries, the highest incidence was observed in assisted vaginal delivery (19/30, 63.3%). Subjects with birth-related subdural hemorrhage were categorized into three age groups: <13 days, 13-21 days, and >21 days. All detected hemorrhages were T1W hyperintense. In the <13 days group, all bleeds were T2W hypointense. In the 13-21 days group, 73.1% were T2W hypointense, while 26.9% were T2W mixed. All bleeds in the >21 days group were T2W hypointense. All DWI hyperintense bleeds were found in the 13-21 days group.
    CONCLUSIONS: Birth-related subdural hemorrhage occurs in over a third of normal deliveries and has a characteristic distribution, predominantly in the posterior fossa. Associated cervical spinal subdural hemorrhages, cervical spinal ligamentous injury, or cortical bridging vein injury, which are concerning for traumatic etiology, were not identified. Birth-related subdural hemorrhages follow a characteristic pattern of signal changes on MRI. Although not completely reliable, this can help in differentiating them from traumatic intracranial hemorrhages which usually occur postnatally. No birth-related subdural hemorrhages were seen after 25 days of age in our cohort.
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  • 文章类型: Journal Article
    背景:最近的研究表明,怀孕加速了生物衰老,然而,关于衰老的生物标志物如何受到围产期事件的影响知之甚少。鉴于已知手术后会发生免疫转移,我们探讨了分娩方式与产后产妇白细胞端粒长度(LTL)之间的关系,生物衰老的标志。
    方法:从前瞻性足月队列中获得产后产妇血液样本,2012年至2018年间无高血压疾病或围产期感染的单胎分娩。主要结局是产后1周至产后6个月之间抽取的一份血液样本的产后LTL,使用定量PCR在碱基对(bp)中从解冻的冷冻外周血单个核细胞中测量。多变量线性回归模型比较了阴道分娩与剖宫产之间的LTL,调整年龄,身体质量指数,无效性是潜在的混杂因素。在两个相互排斥的组中进行了分析:在产后1周测量的LTL和产后6个月测量的LTL。其次,我们使用机器学习方法比较了不同分娩方式的多组学,以评估剖宫产后是否发生了其他生物学改变.这些包括转录组学,代谢组学,微生物,免疫组学,和蛋白质组学(血清和血浆)。
    结果:在67人中,50例(74.6%)阴道分娩,17例(25.4%)剖宫产。产后1周剖宫产后LTL明显缩短(剖宫产5755.2bp,阴道6267.8bp,p=0.01)以及后来的抽取(5586.6对5945.6bp,p=0.04)。在调整了混杂因素后,这些差异在第1周(调整后β-496.1,95%置信区间[CI]-891.1,-101.1,p=0.01)及以后(调整后β-396.8;95%CI-727.2,-66.4)持续存在.p=0.02)。在15名参与者中,他们也有完整的产后多组学数据,在转录组学(无细胞[cf]RNA)中,有阴道分娩与剖宫产分娩的预测性特征,代谢组学,微生物,和蛋白质组学在错误发现校正后没有持续存在。
    结论:剖宫产后产后第1周的产妇LTL缩短了近500bp。这种差异在产后持续了几周,即使其他炎症标志物已恢复正常。在对产后LTL的任何分析中都应考虑分娩方式,并有必要对这一现象进行进一步调查。
    BACKGROUND: Recent studies have suggested that pregnancy accelerates biologic aging, yet little is known about how biomarkers of aging are affected by events during the peripartum period. Given that immune shifts are known to occur following surgery, we explored the relation between mode of delivery and postpartum maternal leukocyte telomere length (LTL), a marker of biologic aging.
    METHODS: Postpartum maternal blood samples were obtained from a prospective cohort of term, singleton livebirths without hypertensive disorders or peripartum infections between 2012 and 2018. The primary outcome was postpartum LTLs from one blood sample drawn between postpartum week 1 and up to 6 months postpartum, measured from thawed frozen peripheral blood mononuclear cells using quantitative PCR in basepairs (bp). Multivariable linear regression models compared LTLs between vaginal versus cesarean births, adjusting for age, body mass index, and nulliparity as potential confounders. Analyses were conducted in two mutually exclusive groups: those with LTL measured postpartum week 1 and those measured up to 6 months postpartum. Secondarily, we compared multiomics by mode of delivery using machine-learning methods to evaluate whether other biologic changes occurred following cesarean. These included transcriptomics, metabolomics, microbiomics, immunomics, and proteomics (serum and plasma).
    RESULTS: Of 67 included people, 50 (74.6 %) had vaginal and 17 (25.4 %) had cesarean births. LTLs were significantly shorter after cesarean in postpartum week 1 (5755.2 bp cesarean versus 6267.8 bp vaginal, p = 0.01) as well as in the later draws (5586.6 versus 5945.6 bp, p = 0.04). After adjusting for confounders, these differences persisted in both week 1 (adjusted beta -496.1, 95 % confidence interval [CI] -891.1, -101.1, p = 0.01) and beyond (adjusted beta -396.8; 95 % CI -727.2, -66.4. p = 0.02). Among the 15 participants who also had complete postpartum multiomics data available, there were predictive signatures of vaginal versus cesarean births in transcriptomics (cell-free [cf]RNA), metabolomics, microbiomics, and proteomics that did not persist after false discovery correction.
    CONCLUSIONS: Maternal LTLs in postpartum week 1 were nearly 500 bp shorter following cesarean. This difference persisted several weeks postpartum, even though other markers of inflammation had normalized. Mode of delivery should be considered in any analyses of postpartum LTLs and further investigation into this phenomenon is warranted.
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