Fetal Viability

胎儿活力
  • 文章类型: Journal Article
    背景:在美国,胎儿发育标志物,包括“生存能力”和胎儿可以“感觉疼痛”的要点,已经渗透到堕胎的社会想象中,影响公众支持以及护理的合法性和可用性,但是他们在多大程度上描述和指导妊娠后期流产的经历尚不清楚。
    方法:通过对美国30名在怀孕24周后流产的顺性女性的访谈,我们调查胎儿存活和/或疼痛的概念是否以及如何在他们怀孕和流产的生活经历中发挥作用。
    结果:根据受访者的说法,以胎儿发育为基础的法律限制流产,以所谓的胎儿发育为妊娠期限制,胎儿的生存能力和疼痛状况优于预期的新生儿,未能解释孕妇的生存能力和痛苦。
    结论:以胎儿发育为中心来调节流产机会的话语实践使流产护理被拒绝,因为胎儿的地位在概念上是可用的-甚至在受精时-并自然化了消除妇女和其他可能怀孕的人的主观性。
    BACKGROUND: In the United States, fetal development markers, including \"viability\" and the point when a fetus can \"feel pain\", have permeated the social imaginary of abortion, affecting public support and the legality and availability of care, but the extent to which they describe and orient the experience of abortion at later gestations is unclear.
    METHODS: Using interviews with 30 cisgender women in the U.S. who obtained an abortion after 24 weeks of pregnancy, we investigate whether and how notions of fetal viability and/or pain operated in their lived experiences of pregnancy and abortion.
    RESULTS: By respondents\' accounts, fetal development-based laws restricting abortion based in purported points of fetal development operated as gestational limits, privileged the viability and pain status of the fetus over that of the prospective neonate, and failed to account for the viability and pain of the pregnant person.
    CONCLUSIONS: The discursive practice of centering fetal development in regulating abortion access makes denial of abortion care because of the status of the fetus conceptually available-even at the point of fertilization-and naturalizes the erasure of the subjectivity of women and others who can become pregnant.
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  • 文章类型: Journal Article
    周期分娩是指在胎龄200/7至256/7周之间发生的分娩。在这个脆弱的时期,孕妇和新生儿的管理取决于临床状况,以及病人的愿望。提供者应该准备在生存的尖端为患者提供咨询,注意这些新生儿结局的不确定性。虽然重要的是将预测的发病率和死亡率的数据纳入一个人的咨询,共同决策对于照顾这些患者和优化所有人的预后至关重要。
    Periviable birth refers to births occurring between 20 0/7 and 25 6/7 weeks gestational age. Management of pregnant people and neonates during this fragile time depends on the clinical status, as well as the patient\'s wishes. Providers should be prepared to counsel patients at the cusp of viability, being mindful of the uncertainty of outcomes for these neonates. While it is important to incorporate the data on projected morbidity and mortality into one\'s counseling, shared-decision making is most essential to caring for these patients and optimizing outcomes for all.
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  • 文章类型: Journal Article
    不能设置生存能力的任意胎龄限制,在临床实践中,重点应该放在生存间隔上-所谓的预后不确定性的“灰色地带”。对于此间隔内的情况,最适当的决策过程仍有争议,而生存能力已成为生物伦理学的最大挑战之一。由于社会经济原因,普遍公认的道德原则可能会有不同的解释,文化,和宗教方面。在长期生存能力的情况下,对于干预措施是否能使临床利益与伤害达到更大的平衡,存在相当大的不确定性.此外,胎儿或新生儿无法行使自主性,医生和父母将充当患者代理人。当父母和医生不同意婴儿的最佳利益时,没有家长式态度的对话至关重要,医生应该只提供,但不推荐,围产期干预措施。父母的选择,基于全面的信息,应在医学上可行和适当的范围内得到尊重。当父母和医生之间发生分歧时,如何达成共识?专业指南可以作为讨论的框架和起点。在现实中,然而,准则很少划出明确的界限,在许多情况下仍然含糊不清,措辞含糊不清。地方伦理委员会可以提供咨询,并在讨论期间担任主持人,但是伦理委员会没有决策优先权。咨询在生存讨论中扮演着最重要的角色,考虑到胎儿和母体的特殊特征,以及父母的价值观。应注意与咨询相关的几个警告:应尽量减少信息碎片或不一致,预后最好以积极的框架表示,应避免过度依赖统计。建议在出生前做出有关新生儿复苏的决定,而不是以新生儿出生时的外观为条件。不管做什么决定,重要的是要确保产前和产后的一致性。本文描述了个别医生,中心,各国在决定启动或放弃重症监护的方法上有所不同。不可能提供全球共识的观点,也不可能有统一的道德,道德,或实用的策略。然而,道德上合理的,优质护理包括产科和新生儿团队的早期参与,以实现连贯的,可理解的,非家长式,平衡的护理计划。最终,医生需要根据当地标准调整预期,当地结果数据,和当地新生儿支持的可用性。
    An arbitrary gestational age limit of viability cannot be set, and in clinical practice the focus should be on a periviability interval-the so-called \"gray zone\" of prognostic uncertainty. For cases within this interval, the most appropriate decision-making process remains debatable and periviability has emerged as one of the greatest challenges in bioethics. Universally recognized ethical principles may be interpreted differently due to socioeconomic, cultural, and religious aspects. In the case of periviability, there is considerable uncertainty over whether interventions result in a greater balance of clinical good over harm. Furthermore, the fetus or neonate is unable to exercise autonomy and the physicians and parents will act as patient surrogates. When parents and physicians disagree about the infant\'s best interest, a dialogue without paternalistic attitudes is essential, whereby physicians should only offer, but not recommend, perinatal interventions. Parental choice, based on thorough information, should be respected within the limits of what is medically feasible and appropriate. When disagreements between parents and physicians occur, how is consensus to be achieved? Professional guidelines can be helpful as a framework and starting point for discussion. In reality, however, guidelines only rarely draw categorical lines and in many cases remain vague and ambiguously worded. Local ethics committees can provide counseling and function as moderators during discussions, but ethics committees do not have decision precedence. Counseling assumes the most significant role in periviability discussions, taking into consideration the particular fetal and maternal characteristics, as well as parental values. Several caveats should be observed relative to counseling: message fragmentation or inconsistence should be minimized, prognosis should preferably be presented in a positive framing, and overreliance on statistics should be avoided. It is recommended that decisions regarding neonatal resuscitation in the periviability interval be made before birth and not conditional on the newborn\'s appearance at birth. Regardless of decision, it is important to assure pre- and postnatal coherence. The present article describes how individual physicians, centers, and countries differ in the approach to the decision to initiate or forgo intensive care in the periviability interval. It is impossible to provide a global consensus view and there can be no unifying ethical, moral, or practical strategy. Nevertheless, ethically justified, quality care comprises early involvement of the obstetric and neonatal team to enable a coherent, comprehensible, nonpaternalistic, and balanced plan of care. Ultimately, physicians will need to adjust the expectations to the local standards, local outcome data, and local neonatal support availability.
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    文章类型: English Abstract
    尽管自1990年代以来,胎龄<28周时出生的极早产儿(GA)的存活率有所提高,关于长期结果的报告很少发表.我们研究的目的是确定2009-19年在卡罗林斯卡大学医院在生存能力极限(GA220-236周)出生的母亲中的危险因素和孩子的结局。2016年引入新的国家干预指南。我们假设婴儿存活,新的临床实践后,矫正年龄2岁时的发病率和认知功能有所改善。确定了产妇的危险因素,这强调了对极端早产风险增加的妇女进行标准化随访和咨询的必要性.胎儿宫内死亡率没有变化。在22周的分娩中,新生儿死亡率下降96vs.76%的活产婴儿(p=0.05),2年生存率增加4%vs24%(p=0.05)。在23周,新生儿死亡率下降了56%,活产率下降了27%(p=0.01),2年生存率增加了42%vs64%(p=0.03)。相比之下,2岁矫正年龄时的发病率和认知障碍没有变化。我们的结果与以前的报告一致,自1990年代以来,在GA<24周出生的婴儿中,认知功能没有实质性改善。他们强调了在威胁早产<24周时进行积极干预之前综合道德考虑的重要性。
    Despite improved survival of extremely preterm infants born at <28 weeks gestational age (GA) since the 1990s, only few reports on long-term outcomes have been published. The aim of our study was to determine risk factors among mothers and outcomes for their children born at the limit of viability (GA 22 + 0 - 23 + 6 weeks) at the Karolinska university hospital in 2009-19, before and after the introduction of new national interventionist guidelines in 2016. We hypothesized that infant survival, morbidity and cognitive functions at 2 years\' corrected age had improved after the new clinical practice. Maternal risk factors were identified, which emphasize the need of standardized follow-up and counseling for women at increased risk of extreme preterm birth. The intrauterine fetal death rates were unchanged. Among births at 22 weeks, the neonatal mortality tended to decrease 96 vs. 76 percent of live births (p = 0,05), and the 2-year survival tended to increase 4 vs 24 percent (p = 0,05). At 23 weeks, the neonatal mortality decreased 56 vs 27 percent of live births (p = 0,01), and the 2-year survival increased 42 vs 64 percent (p = 0,03). In contrast, the morbidity and cognitive disability at 2 years\' corrected age were unchanged. Our results were in accordance with previous reports where no substantial improvement in cognitive functions are reported among infants born at GA <24 weeks since the 1990s. They highlight the importance of comprehensive ethical considerations before active interventions at threatening preterm birth < 24 weeks.
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  • 文章类型: Journal Article
    鉴于健康护理提供者和家庭在生育期间出生的复杂伦理和情感性质,这项调查旨在确定在夏威夷一家三级护理中心为面临生存风口浪尖的早产孕妇提供更好咨询的策略.作为一个更大的关于生存咨询的质量改进项目的一部分,使用假设情景的进展,在个人或小型焦点小组中采访了10名患者。3名研究人员对访谈进行了独立分析,以确定患者经历的主题以及在为进行围活期妊娠的患者提供咨询时需要改善的潜在领域。采访中出现了几个共同的主题。患者表示希望在整个过程中以无术语的方式提供更多信息,并通过医疗团队的统一消息传递,和情感支持。这些发现增加了有限的文献,这些文献解决了面对不确定性时患者对与医疗保健提供者互动的看法,特别是在太平洋岛民人口中。作者建议增加提供者的培训,并开发一个更结构化的过程,以建议孕妇面临周胎妊娠损失,以改善患者的体验。
    Given the complex ethical and emotional nature of births during the periviable period for both health care providers and families, this investigation sought to identify strategies for improved counseling of pregnant patients facing preterm birth at the cusp of viability at a tertiary care center in Hawai\'i. As part of a larger quality improvement project on periviability counseling, 10 patients were interviewed during either individual or small focus groups using a progression of hypothetical scenarios. Interviews were analyzed independently by 3 investigators to identify themes of patient experience and potential areas for improvement when counseling patients who are carrying periviable pregnancies. Several common themes emerged from the interviews. Patients expressed the desire for more information throughout the process delivered in a jargon-free manner with unified messaging from the medical teams, and emotional support. These findings add to a limited body of literature which addresses patient perceptions of interactions with health care providers in the face of uncertainty, particularly in a Pacific Islander population. The authors recommend increasing provider training and developing a more structured process to counsel pregnant women facing periviable pregnancy loss to improve the patient experience.
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  • 文章类型: Journal Article
    目的:本研究旨在探讨以色列新生儿学家对妊娠22-24周早产儿复苏的观点以及他们对父母偏好的考虑。调查了影响医生决定生存边缘的因素,以及他们的决定与国家临床指南一致的程度。
    方法:使用47个问题的在线问卷进行描述性和相关性研究。
    结果:以色列127名活跃的新生儿学家中有90名(71%)做出了回应。74%,分别有50%和16%的受访者认为,在出生时进行复苏和全面治疗,有损于妊娠22,23和24周时出生的婴儿的最大利益,分别。受访者关于极度早产儿复苏的决定显示出明显的差异,并且始终与国家临床指南或对这些新生儿的最佳利益的看法不一致。性别,经验,出生国和宗教信仰水平都与受访者对治疗决定的偏好有关。个人价值观和对法律问题的关注也被认为会影响决策。
    结论:以色列新生儿学家在妊娠22-24周出生的极早产儿的产房管理方面观察到显著差异,通常特别强调尊重父母的意愿。目前的国家准则没有完全涵盖广泛的方法。该国的指导方针应反映现有的意见范围,在制定指导方针和建议之前,可能是通过对护理人员进行广泛调查。
    OBJECTIVE: This study aims to examine the perspectives of neonatologists in Israel regarding resuscitation of preterm infants born at 22-24 weeks gestation and their consideration of parental preferences. The factors that influence physicians\' decisions on the verge of viability were investigated, and the extent to which their decisions align with the national clinical guidelines were determined.
    METHODS: Descriptive and correlative study using a 47-questions online questionnaire.
    RESULTS: 90 (71%) of 127 active neonatologists in Israel responded. 74%, 50% and 16% of the respondents believed that resuscitation and full treatment at birth are against the best interests of infants born at 22, 23 and 24 weeks gestation, respectively. Respondents\' decisions regarding resuscitation of extremely preterm infants showed significant variation and were consistently in disagreement with either the national clinical guidelines or the perception of what is in the best interest of these newborns. Gender, experience, country of birth and the level of religiosity were all associated with respondents\' preferences regarding treatment decisions. Personal values and concerns about legal issues were also believed to affect decision-making.
    CONCLUSIONS: Significant variation was observed among Israeli neonatologists regarding delivery room management of extremely premature infants born at 22-24 weeks gestation, usually with a notable emphasis on respecting parents\' wishes. The current national guidelines do not fully encompass the wide range of approaches. The country\'s guidelines should reflect the existing range of opinions, possibly through a broad survey of caregivers before setting the guidelines and recommendations.
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  • 文章类型: Journal Article
    背景:为达成共同决策而进行的妊娠咨询是具有挑战性的,当前,有限的证据阻碍了所提供信息的稳健性。
    目的:阐明对胎膜早破(PROM)在存活前或存活极限时进行预期处理后的产科和新生儿结局的发生率。
    方法:Medline,Embase,截至2023年9月,对Cinahl和WebofScience数据库进行了电子搜索。我们包括在生存能力之前和极限时进行的PROM单胎妊娠的前瞻性和回顾性研究(即,发生在妊娠14/0至24/6周之间)。纳入研究的质量评估使用纽卡斯尔-渥太华量表进行队列研究。我们使用比例的荟萃分析来组合数据和报告的汇总比例。鉴于临床异质性,使用随机效应模型计算合并数据分析.该研究在PROSPERO数据库(CRD42022368029)中注册。
    结果:合并终止妊娠(TOP)的比例为32.3%。排除TOP病例后,自然流产或胎儿死亡率为20.1%,而活产率为持续怀孕的65.9%。活产病例分娩时的平均胎龄为27.26周,胎膜早破与分娩之间的平均潜伏期为39.40天。剖宫产的合并比例为47.9%。47.1%的病例发生羊水过少。33.4%的病例发生绒毛膜羊膜炎;7%的病例发生子宫内膜炎,胎盘早剥9.2%,产后出血5.3%。1.2%的病例需要进行子宫切除术。在纳入的研究中,孕产妇败血症发生在1.5%的病例中,而没有孕产妇死亡报告。当关注新生儿结局时,活出生病例的平均出生体重为1022.85克。NICU入院率为86.3%,RDS并发66.5%;24.0%的病例诊断为肺发育不全或发育不良,40.9%的病例诊断为持续肺动脉高压。其他新生儿并发症包括11.1%的坏死性小肠结肠炎,ROP为27.1%,IVH在17.5%的存活新生儿中。新生儿败血症并发病例占30.2%,新生儿总死亡率为23.9%。在74.1%的可用病例中,2至4年的长期随访是正常的。
    结论:存活前或存活极限时的胎膜早破与产科和新生儿并发症的高负担相关,在近30%的病例中,2至4年的长期随访受损,因此对咨询和管理都是临床挑战。这些数据在首次接触此类患者时很有用,可以提供有关这种情况的短期和长期结果的最全面的情况,并帮助父母共同决策。
    Counseling of pregnancies complicated by pre- and periviable premature rupture of membranes to reach shared decision-making is challenging, and the current limited evidence hampers the robustness of the information provided. This study aimed to elucidate the rate of obstetrical and neonatal outcomes after expectant management for premature rupture of membranes occurring before or at the limit of viability.
    Medline, Embase, CINAHL, and Web of Science databases were searched electronically up to September 2023.
    Our study included both prospective and retrospective studies of singleton pregnancies with premature rupture of membranes before and at the limit of viability (ie, occurring between 14 0/7 and 24 6/7 weeks of gestation).
    Quality assessment of the included studies was performed using the Newcastle-Ottawa Scale for cohort studies. Moreover, our study used meta-analyses of proportions to combine data and reported pooled proportions. Given the clinical heterogeneity, a random-effects model was used to compute the pooled data analyses. This study was registered with the International Prospective Register of Systematic Reviews database (registration number: CRD42022368029).
    The pooled proportion of termination of pregnancy was 32.3%. After the exclusion of cases of termination of pregnancy, the rate of spontaneous miscarriage or fetal demise was 20.1%, whereas the rate of live birth was 65.9%. The mean gestational age at delivery among the live-born cases was 27.3 weeks, and the mean latency between premature rupture of membranes and delivery was 39.4 days. The pooled proportion of cesarean deliveries was 47.9% of the live-born cases. Oligohydramnios occurred in 47.1% of cases. Chorioamnionitis occurred in 33.4% of cases, endometritis in 7.0%, placental abruption in 9.2%, and postpartum hemorrhage in 5.3%. Hysterectomy was necessary in 1.2% of cases. Maternal sepsis occurred in 1.5% of cases, whereas no maternal death was reported in the included studies. When focusing on neonatal outcomes, the mean birthweight was 1022.8 g in live-born cases. The neonatal intensive care unit admission rate was 86.3%, respiratory distress syndrome was diagnosed in 66.5% of cases, pulmonary hypoplasia or dysplasia was diagnosed in 24.0% of cases, and persistent pulmonary hypertension was diagnosed in 40.9% of cases. Of the surviving neonates, the other neonatal complications included necrotizing enterocolitis in 11.1%, retinopathy of prematurity in 27.1%, and intraventricular hemorrhage in 17.5%. Neonatal sepsis occurred in 30.2% of cases, and the overall neonatal mortality was 23.9%. The long-term follow-up at 2 to 4 years was normal in 74.1% of the available cases.
    Premature rupture of membranes before or at the limit of viability was associated with a great burden of both obstetrical and neonatal complications, with an impaired long-term follow-up at 2 to 4 years in almost 30% of cases, representing a clinical challenge for both counseling and management. Our data are useful when initially approaching such patients to offer the most comprehensive possible scenario on short- and long-term outcomes of this condition and to help parents in shared decision-making. El resumen está disponible en Español al final del artículo.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    2022年6月,Dobbs诉杰克逊妇女卫生组织最高法院的裁决终止了在整个美国进行堕胎专业实践的宪法权利。取消堕胎的宪法权利极大地改变了美国妇产科医生的做法。它可能会增加怀孕患者的风险,导致医生如何提供护理的深刻变化,特别是在对堕胎有严格禁令或妊娠限制的州,并引入了个人挑战,包括患者和临床医生的道德困扰和伤害以及法律风险。职业责任模式以医学作为职业的伦理观念为基础,在妇产科领域的医学伦理塑造中具有重要的影响力。它为妇产科中道德和专业行为的重要性提供了框架。生存能力标志着胎儿是要求获得医疗护理的患者的阶段。通过在没有充分理由的情况下允许不受限制的堕胎超过此阶段,例如关于怀孕个人的生命和健康的那些,或者在严重胎儿畸形的情况下,各州可能不坚持作为病人对胎儿的公平伦理考虑。使用专业责任模式,我们强调需要细微差别,以证据为基础的政策,允许在无限制的生存能力之前进行堕胎管理,并允许在生存能力之后进行堕胎,以保护怀孕患者的生命和健康,以及允许因严重胎儿畸形而流产。
    In June 2022, the Dobbs v. Jackson Women\'s Health Organization Supreme Court decision ended the constitutional right to the professional practice of abortion throughout the United States. The removal of the constitutional right to abortion has significantly altered the practice of obstetricians and gynecologists across the US. It potentially increases risks to pregnant patients, leads to profound changes in how physicians can provide care, especially in states with strict bans or gestational limits to abortion, and has introduced personal challenges, including moral distress and injury as well as legal risks for patients and clinicians alike. The professional responsibility model is based on the ethical concept of medicine as a profession and has been influential in shaping medical ethics in the field of obstetrics and gynecology. It provides the framework for the importance of ethical and professional conduct in obstetrics and gynecology. Viability marks a stage where the fetus is a patient with a claim to access to medical care. By allowing unrestricted abortions past this stage without adequate justifications, such as those concerning the life and health of the pregnant individual, or in instances of serious fetal anomalies, the states may not be upholding the equitable ethical consideration owed to the fetus as a patient. Using the professional responsibility model, we emphasize the need for nuanced, evidence-based policies that allow abortion management prior to viability without restrictions and allow abortion after viability to protect the pregnant patient\'s life and health, as well as permitting abortion for serious fetal anomalies.
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  • 文章类型: Journal Article
    限制性堕胎法的影响远远超出了生殖健康的直接范围,对新生儿护理的临床和伦理方面产生连锁影响,以及围产期姑息治疗。这些法律有可能改变家庭和临床医生在进行复杂的胎儿诊断后如何进行产前和产后医疗决策。我们提出了一个假设案例,以探讨流产护理与胎儿和患有生命受限疾病的婴儿的围产期护理之间的联系。我们将强调堕胎机会有限对预期这些婴儿出生的家庭的潜在影响。我们还将研究妊娠生存能力的法律和道德上充满灰色地带,在那里可能会发生活产婴儿的流产和复苏,根据父母的自由裁量权。这些情景不可避免地受到美国快速变化的法律环境的影响,并强调了临床医生可能越来越需要解决的困难的道德困境。
    Restrictive abortion laws have impacts reaching far beyond the immediate sphere of reproductive health, with cascading effects on clinical and ethical aspects of neonatal care, as well as perinatal palliative care. These laws have the potential to alter how families and clinicians navigate prenatal and postnatal medical decisions after a complex fetal diagnosis is made. We present a hypothetical case to explore the nexus of abortion care and perinatal care of fetuses and infants with life-limiting conditions. We will highlight the potential impacts of limited abortion access on families anticipating the birth of these infants. We will also examine the legally and morally fraught gray zone of gestational viability where both abortion and resuscitation of live-born infants can potentially occur, per parental discretion. These scenarios are inexorably impacted by the rapidly changing legal landscape in the U.S., and highlight difficult ethical dilemmas which clinicians may increasingly need to navigate.
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