Vacuum Extraction, Obstetrical

真空萃取,产科
  • 文章类型: Observational Study
    在分娩的第二阶段,真空辅助分娩是产钳分娩和紧急剖宫产的替代方法.关于围产期结局的广泛研究表明,并发症的风险,虽然罕见,高于自发阴道分娩。与围产期结局相关的重要因素是施加的牵引力。我们的研究小组先前开发了一种数字提取手柄,真空智能手柄-3(VIH3),测量和记录牵引力。这项研究的目的是比较使用数字手柄提供的有和没有严重围产期结局的儿童的牵引力曲线。次要目标是建立安全的部队限制。
    这是一项在卡罗林斯卡大学医院产房进行的观察性病例对照研究,瑞典。总的来说,包括2012年至2018年期间使用数字手柄交付的573名儿童。病例被定义为严重围产期结局的复合,包括盖下血肿,颅内出血,缺氧缺血性脑病1-3,癫痫发作或死亡。队列中的病例基于五个匹配变量以1:3匹配。使用MATLAB®软件和条件逻辑回归分析牵引概况。
    严重围产期结局的发生率为2.3%。13例患者均与3例对照相匹配(n=39)。在病例组(比值比[OR]1.004;95%置信区间[CI]1.001-1.007)和峰值力(OR1.022;95%CI1.004-1.041)中,较高的总牵引力的比值显着增加。在病例组中,一些与手术相关的参数显着增加。不出所料,一些新生儿特征也有显著差异。力上限343牛顿分钟(Nmin)显示严重围产期结局减少86%(校正OR0.14;95%CI0.04-0.5)。
    围产期结局严重的儿童的牵引力分布明显较高。在提取过程中使用的Nmin和Newton每增加一次,围产期严重结局的几率就会增加。建议将343Nmin的计算总力水平作为安全上限,但这必须进行前瞻性测试以提供有效性。
    During the second stage of labor, vacuum-assisted delivery is an alternative to forceps delivery and emergency cesarean section. Extensive research concerning perinatal outcomes has indicated that the risk of complications, although rare, is higher than with a spontaneous vaginal delivery. An important factor related to perinatal outcomes is the traction force applied. Our research group previously developed a digital extraction handle, the Vacuum Intelligent Handle-3 (VIH3), that measures and records traction force. The objective of this study was to compare traction force profiles in children with and without severe perinatal outcomes delivered with the digital handle. A secondary aim was to establish a safe force limit.
    This was an observational case-control study at the delivery ward at Karolinska University Hospital, Sweden. In total, 573 children delivered with the digital handle between 2012 and 2018 were included. Cases were defined as a composite of severe perinatal outcomes, including subgaleal hematoma, intracranial hemorrhage, hypoxic ischemic encephalopathy 1-3, seizures or death. The cases in the cohort were matched 1:3 based on five matching variables. Traction profiles were analyzed using the MATLAB® software and conditional logistic regression.
    The incidence of severe perinatal outcomes was 2.3%. The 13 cases were matched with three controls each (n = 39). A statistically significant increased odds for higher total traction forces was seen in the case group (odds ratio [OR] 1.004; 95% confidence interval [CI] 1.001-1.007) and for the peak force (OR 1.022; 95% CI 1.004-1.041). Several procedure-related parameters were significantly increased in the case group. As expected, some neonatal characteristics also differed significantly. An upper force limit of 343 Newton minutes (Nmin) revealed an 86% reduction in severe perinatal outcomes (adjusted OR 0.14; 95% CI 0.04-0.5).
    Children with severe perinatal outcomes had traction force profiles with significantly higher forces. The odds for severe perinatal outcomes increased for every increase in Nmin and Newton used during the extraction procedure. A calculated total force level of 343 Nmin is suggested as an upper safety limit, but this must be tested prospectively to provide validity.
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  • 文章类型: Case Reports
    Separation of the head from the body can occur for a variety of reasons and in various locations across the neck. This study presents a review of the literature to identify the patterns of decapitations in forensic cases in relation to manner of death, age, and anatomical location (n = 88). The most common manner of death was suicide, followed by homicide and then accident. Ages ranged from 32 weeks prenatal to 85 years. Decapitation is reported at higher rates for individuals between 19 and 65. The majority of decapitations occurred at the midneck (second to fifth cervical vertebrae), followed by the upper neck and then the lower neck. This pattern holds true for all manners of death; however, in homicides, the percentage occurring at the midneck decreases. The findings of this study indicate some patterns in terms of manner of death, age, and location of decapitation, which could aid the medicolegal community in interpreting neck trauma. A case study is also briefly presented to illustrate findings.
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  • 文章类型: Comparative Study
    BACKGROUND: The purpose of this study was to assess the neonatal morbidity and mortality associated with vacuum-assisted vaginal deliveries compared to all other vaginal deliveries, and to identify the associated risk factors.
    METHODS: We conducted a retrospective case-control study in a level iii maternity hospital between 2012 and 2016, including 1,802 vacuum-assisted vaginal deliveries and 2control groups: 1802 spontaneous deliveries and 909 forceps-assisted deliveries. We considered minor complications (soft tissue trauma, cephalohaematoma, jaundice, intensive phototherapy, transient brachial plexus injury) and major complications (hypoxic-ischaemic encephalopathy, intracranial and subgaleal haemorrhage, seizures, cranial fracture, permanent brachial plexus injury), admission to the neonatal intensive care unit and death.
    RESULTS: The risk of soft tissue trauma (aOR, 2.4; P<.001), cephalohaematoma (aOR, 5.5; P<.001), jaundice (aOR, 4.4; P<.001), intensive phototherapy (aOR, 2.1; P<.001) and transient brachial plexus injury (aOR; 2.1, P=.006) was higher in vacuum deliveries compared to spontaneous deliveries. Admission to the neonatal intensive care unit was also higher in vacuum deliveries compared to spontaneous deliveries (OR, 1.9; P=.001). When we compared vacuum with forceps deliveries, we found a higher risk of soft tissue trauma (OR, 2.1; P=.004), cephalohaematoma (OR, 2.2, P=.046) and jaundice (OR, 1.4; P=.012). Major complications were more frequent in the vacuum group comparing with the control groups, but the difference was not significant. The 2deaths occurred in vacuum deliveries (1.1 per 1000).
    CONCLUSIONS: The proportion of minor neonatal complications was higher in the vacuum-assisted delivery group. Although major complications and death were also more frequent, they were uncommon, with no significant differences compared to the other groups. There are obstetrical indications for vacuum delivery, but it should alert to the need to watch for potential neonatal complications.
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  • 文章类型: Journal Article
    真空抽取与颅内出血之间的关系一直存在争议。我们试图研究长时间真空抽取对足月儿新生儿颅内出血风险的影响。
    这项全国性的病例对照研究涵盖了1999年至2013年的瑞典产科病房。所有条款,病例包括经真空辅助分娩后诊断为新生儿颅内出血的活产婴儿(n=167).对于每种情况,3个真空交付控制,没有颅内出血的诊断,选择(n=546个对照)。条件logistic回归分析用于研究长时间提取(定义为真空持续时间>15分钟,>6拉或>2杯分离),和新生儿颅内出血。
    在33%的病例中,提取物超过15分钟,与对照组的5%相比。25%的病例和4%的对照病例使用了超过6次拉拔,3.6%的病例和0.6%的对照组发生两次以上的杯子脱离。与遵守安全建议的提取相比,颅内出血的几率是9倍(OR8.91,95%,CI5.22-15.20)在暴露于长时间拔牙的婴儿中。在调整了潜在的混杂因素后,OR降至8.04(95%CI4.49-14.38)。
    长期拔牙和颅内出血之间的强烈关联表明,遵守安全建议可能会降低真空拔牙接生婴儿颅内出血的风险。然而,真空时间的安全限度和抽吸次数仍然未知,即使按照安全建议进行,也可能发生颅内出血.
    The association between vacuum extraction and intracranial hemorrhage has been debated. We sought to investigate the impact of protracted vacuum extraction on the risk for neonatal intracranial hemorrhage in term infants.
    This nationwide case-control study covered Swedish maternity wards from 1999 to 2013. All term, live-born infants diagnosed with neonatal intracranial hemorrhage after vacuum-assisted delivery were included as cases (n = 167). For each case, 3 vacuum-delivered controls, without a diagnosis for intracranial hemorrhage, were selected (n = 546 controls). Conditional logistic regression analysis was used to study the association between protracted extraction (defined as vacuum duration > 15 min, > 6 pulls or > 2 cup detachments), and neonatal intracranial hemorrhage.
    Extractions exceeded 15 min among 33% of the cases, vs 5% of the controls. More than six pulls were used in 25% of the cases and in 4% of the controls, and more than two cup detachments occurred in 3.6% of the cases and in 0.6% of the controls. Compared with extractions adhering to safety recommendations, the odds for intracranial hemorrhage were nine-fold (OR 8.91, 95%, CI 5.22-15.20) among infants exposed to a protracted extraction. After adjustments for potential confounders, the OR decreased to 8.04 (95% CI 4.49-14.38).
    The strong association between protracted extraction and intracranial hemorrhage suggests that adherence to safety recommendations may reduce the risk for intracranial hemorrhage in infants delivered by vacuum extraction. However, safe limits for vacuum duration and number of pulls are still unknown and intracranial hemorrhage may occur even when performed in accordance with safety recommendations.
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  • 文章类型: Case Reports
    臂丛神经产伤(BPBI)和膈神经损伤有时可在分娩困难如臀位后同时发生。肩难产,镊子或真空提取。在存在相关危险因素的情况下,在影像学研究中,应怀疑患有呼吸窘迫和半膈抬高的新生儿的膈神经麻痹。右侧比左侧更受影响,并且大部分与BPBI相关。我们在这里介绍一例罕见的新生儿,该新生儿患有左侧Erb麻痹和对侧/右侧diaphragm肌麻痹,该婴儿在diaphragm肌折叠后从持续的呼吸窘迫和进食困难中恢复过来。在随访检查中,左侧Erb的麻痹也完全恢复。
    Brachial plexus birth injury (BPBI) and phrenic nerve injury can sometimes occur concurrently in neonates following difficult deliveries like breech presentation, shoulder dystocia, forceps or vacuum extraction. Phrenic nerve palsy should be suspected in a newborn with respiratory distress and an elevated hemidiaphragm on the imaging studies in presence of the associated risk factors. The right side is affected more often than the left side and most of it is associated with BPBI. We present here a rare case of a newborn baby with a left-sided Erb\'s palsy and a contralateral/right-sided diaphragmatic paralysis who recovered from the persistent respiratory distress and feeding difficulties following plication of the diaphragm. The left-sided Erb\'s palsy also fully recovered at follow-up examination.
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  • 文章类型: Case Reports
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  • 文章类型: Journal Article
    背景:在坦桑尼亚农村地区,道路不畅,设施人手不足等挑战威胁着获得紧急产科和新生儿护理的机会。基戈马的地区,Pwani和Morogoro地区是当地非政府组织的目标,以协助地方政府建设能力并改善严重产科和新生儿并发症的临床管理。该计划升级了十个初级保健中心,以提供全面的产科和新生儿急诊护理。本文介绍了在十家保健中心和五家医院重新引入真空提取的过程,突出吸收模式,交付方式和经验教训。
    方法:这项观察性研究使用了2011年至2016年收集的基于设施的趋势数据。描述性结果包括机构剖腹产率,真空萃取率,以及剖腹产与真空辅助分娩的比例。
    结果:机构剖腹产率稳定在约10-11%,真空提取率从2011年的几乎没有手术上升到2016年的约2%。与医院相比,升级后的保健中心的增长更为明显。2016年,新升级的医疗中心的真空提取率从0.5%到7.8%不等。在2011年至2016年之间,医院中剖腹产与真空抽取的比例从304剖腹产变为1真空抽取至10:1,而在医疗中心,比例从22:1变为3:1。
    结论:在初级卫生保健机构的临床实践中重新引入真空提取并进行任务转移是可行的。当医疗中心综合升级以提供全面的紧急产科护理的一部分时,重新引入该程序比重新引入繁忙的医院环境时更成功。医院中训练有素的人员的流失导致了真空提取的不均匀吸收。吸取的经验教训适用于进一步扩大国家规模和其他国家。
    BACKGROUND: In rural Tanzania access to emergency obstetric and newborn care is threatened by poor roads and understaffed facilities among other challenges. Districts in Kigoma, Pwani and Morogoro regions were targeted by a local non-governmental organization to assist local government to build capacity and improve access to clinical management of severe obstetric and newborn complications. The program upgraded ten primary health care centres to provide comprehensive emergency obstetric and newborn care. This paper describes the process of reintroducing vacuum extraction into ten health centres and five hospitals, highlighting patterns in uptake, mode of delivery and lessons learned.
    METHODS: This observational study uses facility-based trend data collected between 2011 and 2016.Descriptive outcomes include institutional caesarean delivery rates, vacuum extraction rates, and the ratio of caesareans to vacuum-assisted deliveries.
    RESULTS: Institutional caesarean delivery rates remained stable at about 10-11% and the vacuum extraction rate rose from virtually no procedures in 2011 to about 2% in 2016. The increase was more visible in upgraded health centres than in hospitals. In 2016 vacuum extraction rates in newly upgraded health centres ranged from 0.5 to 7.8%. Between 2011 and 2016, the ratio of caesareans to vacuum extractions in hospitals changed from 304 caesareans to 1 vacuum extraction to 10:1, while in health centres the ratio changed from 22: 1 to 3: 1.
    CONCLUSIONS: Reintroduction of vacuum extraction into clinical practice in primary health care facilities with task-shifting is feasible. Reintroduction of this procedure was more successful when part of an integrated upgrading of health centres to provide comprehensive emergency obstetric care than when reintroduced into busy hospital environments. Turnover of trained staff in hospitals contributed to the uneven uptake of vacuum extraction. Lessons learned are applicable to further national scale up and to other countries.
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  • 文章类型: Letter
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  • 文章类型: Case Reports
    This article reviews the literature for the management and repair of perineal hernias and presents a previously undescribed case of perineal bladder herniation after intrapartum pubic symphysis rupture.
    A review of the literature was completed through the PubMed database using the search terms \"bladder,\" \"canal of Nuck,\" \"labial hernia,\" \"gynecology,\" \"hernia,\" \"obstetrics,\" \"perineal hernia,\" \"postpartum,\" \"pubic diastasis,\" \"pubic symphysis,\" \"vaginal delivery,\" \"symphyseal rupture,\" and \"symphyseal separation.\" The electronic medical record for the patient was reviewed and used with the consent of the patient.
    There were no reports of peripartum perineal hernias in the English language literature on human subjects. Literature review with the previously mentioned search terms demonstrated that there is not a standardized approach to repair given the rarity of these defects. There are data to support the use of mesh as opposed to primary repair but no data to support abdominal versus perineal versus combined approach. We describe a successful repair of a complicated peripartum perineal hernia using a combined abdominal-perineal approach with mesh.
    Obstetric trauma is a previously unreported cause of perineal hernias. Perineal hernias are rare conditions that must be considered in any patient who presents with a bulging perineal mass. Puerperal pubic symphysis rupture can lead to a large bladder hernia. Our combined abdominal-perineal approach of repair resulted in minimal perioperative morbidity and short-term resolution of the hernia.
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  • 文章类型: Case Reports
    产妇完全性心脏传导阻滞会给产前麻醉师带来重大挑战,围产期,和产后。有些患者首次出现产褥期出现头晕,弱点,晕厥,或充血性心力衰竭是伴随妊娠的额外血液动力学负担的结果。尽管在怀孕前有症状的年轻患者中,永久性起搏器的放置有所增加,在无症状的产妇中预防性放置起搏器并不总是正确的。无症状妇女对临时或永久性起搏器的需求应根据具体情况进行评估;这些患者中的许多人可以在分娩和分娩期间得到安全管理,无需起搏。在妊娠和分娩后,必须警惕心脏完全传导阻滞的产妇,由于需要插入起搏器也可能出现在产后期间。我们介绍了一例26岁产妇的三度心脏传导阻滞。
    Maternal complete heart block can pose significant challenges for the anesthesiologist in the antepartum, peripartum, and postpartum periods. Some patients may present for the first time in the puerperium with dizziness, weakness, syncope, or congestive heart failure as a result of the additional hemodynamic burden that accompanies pregnancy. Although there is an increase in permanent pacemaker placement in young symptomatic patients before pregnancy, prophylactic placement of pacemakers in asymptomatic parturients is not always indicated. The need for temporary or permanent pacemakers in asymptomatic women should be assessed on a case-by-case basis; many of these patients may be safely managed during labor and delivery without pacing. The parturient with complete heart block must be followed vigilantly during pregnancy and post delivery, as the need for pacemaker insertion can also arise in the postpartum period. We present a case of third-degree heart block in a 26-year-old parturient.
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