induction

感应
  • 文章类型: Journal Article
    一些多发性硬化症(MS)患者在阿仑单抗(ALM)后表现出疾病活动性的原因尚不清楚,但是奥克瑞珠单抗(OCR)可以代表一种有趣的序贯治疗方法.
    研究OCR在两个ALM疗程后有疾病活动的MS患者中的安全性和有效性。
    观察性回顾性多中心意大利队列研究。
    包括72名受试者。平均随访(FU)为2.4(±1)年。45名患者(62.5%)经历了至少一次不良事件(AE),感染占病例的96.7%。在OCR开始和6个月FU之间观察到总淋巴细胞减少,由BCD19+淋巴细胞耗竭驱动(p<0.001)。免疫球蛋白M(IgM)水平在OCR开始和6个月FU之间降低(p<0.001)。在2年FU,复发,磁共振成像(MRI)活动和无残疾恶化生存率为92.1%,90.8%,和89.2%。两个ALM疗程之间炎症活动的证据与较高的复发风险相关,MRI活动,复发缓解型多发性硬化症的NEDA-3状态丧失(RRMS;分别为p=0.02,p=0.05,p=0.01)。
    两次ALM疗程后的OCR似乎是安全有效的。早期IgM低球蛋白血症发生在高比例的患者中。ALM疗程之间炎症活动的证据似乎增加了OCR治疗中MS再激活的风险。
    UNASSIGNED: The reason why some multiple sclerosis (MS) patients show disease activity after alemtuzumab (ALM) is still unclear, but ocrelizumab (OCR) could represent an interesting sequential therapeutic approach.
    UNASSIGNED: To investigate safety and efficacy of OCR in MS patients with disease activity after two ALM courses.
    UNASSIGNED: Observational retrospective multi-centers Italian cohort study.
    UNASSIGNED: Seventy-two subjects were included. Mean follow-up (FU) was 2.4 (±1) years. Forty-five patients (62.5%) experienced at least one adverse event (AE), with infections accounting for 96.7% of cases. A reduction in total lymphocytes was observed between OCR start and 6 months FU, driven by BCD19+ lymphocytes depletion (p < 0.001). Immunoglobulin M (IgM) levels decreased between OCR start and 6 months FU (p < 0.001). At 2-year FU, relapse, magnetic resonance imaging (MRI) activity and disability worsening-free survival were 92.1%, 90.8%, and 89.2%. The evidence of inflammatory activity between the two ALM courses was associated with higher risk of relapse, MRI activity, and NEDA-3 status loss in relapsing-remitting multiple sclerosis (RRMS; p = 0.02, p = 0.05, p = 0.01, respectively).
    UNASSIGNED: OCR after two ALM courses seemed to be safe and effective. Early IgM hypogammaglobulinemia occurred in a high proportion of patients. The evidence of inflammatory activity between ALM courses seemed to increase the risk of MS re-activation on OCR treatment.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    诱导在低风险中的作用,活体肾移植接受他克莫司治疗,霉酚酸酯,强的松龙是有争议的。
    这是一项回顾性研究,包括2010年2月至2021年6月期间接受活体肾移植的患者,其中有一个相关的单叶形供者,与他克莫司的维持免疫抑制,霉酚酸酯,和泼尼松龙。高危移植,例如第二次或更多次移植,免疫不相容的移植,和无类固醇的移植,被排除在外。患者分为三组:无诱导,巴利昔单抗诱导,和胸腺球蛋白诱导,并对三者的结局进行了比较.
    总共进行了350次移植。两组之间的受体性别分布(P=0.0373)和抢先移植数量(P=0.0272)存在显着差异。其他参数具有可比性。经活检证实的急性排斥反应(BPAR)在胸腺球蛋白组中的发生率明显低于未诱导组(5.3%vs.17.5%;P=0.0051)或巴利昔单抗(5.3%vs.18.8%;P=0.0054)组。即使在我们进行多元回归分析后,这种情况仍然存在(胸腺球蛋白与无诱导组,P=0.0146;胸腺球蛋白与巴利昔单抗组,P=0.0237)。巴利昔单抗组和非诱导组之间的BPAR没有差异。两组之间的其他结果没有差异。
    在低风险单形模式中,相关,他克莫司活体肾移植,霉酚酸酯,和泼尼松龙,与无诱导或巴利昔单抗诱导相比,胸腺球蛋白的BPAR显着降低,短期患者和死亡审查的移植物存活率和感染率相似。巴利昔单抗没有提供超过无诱导的任何益处。
    UNASSIGNED: The role of induction in low-risk, living-donor kidney transplants being treated with tacrolimus, mycophenolate mofetil, and prednisolone is debatable.
    UNASSIGNED: This was a retrospective study that consisted of patients undergoing living kidney transplantation between February 2010 and June 2021 with a related haplomatch donor, with maintenance immunosuppression of tacrolimus, mycophenolate mofetil, and prednisolone. High-risk transplants, such as second or more transplants, immunologically incompatible transplants, and steroid-free transplants, were excluded. Patients were divided into three groups: no induction, basiliximab induction, and thymoglobulin induction, and the outcomes of all three were compared.
    UNASSIGNED: A total of 350 transplants were performed. There was a significant difference in the recipient sex distribution (P = 0.0373) and the number of preemptive transplants (P = 0.0272) between the groups. Other parameters were comparable. Biopsy-proven acute rejection (BPAR) was significantly less frequent in the thymoglobulin group than in the no-induction (5.3% vs. 17.5%; P = 0.0051) or basiliximab (5.3% vs. 18.8%; P = 0.0054) group. This persisted even after we performed multivariate regression analysis (thymoglobulin vs. no-induction group, P = 0.0146; thymoglobulin vs. basiliximab group, P = 0.0237). There was no difference in BPAR between the basiliximab and no-induction groups. There were no differences in other outcomes between the groups.
    UNASSIGNED: In a low-risk haplomatch, related, living-donor kidney transplant on tacrolimus, mycophenolate mofetil, and prednisolone, BPAR was significantly lower with thymoglobulin as opposed to no induction or basiliximab induction with a similar short-term patient and death-censored graft survival and infection rates. Basiliximab did not provide any benefit over no induction.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:结膜胎盘是一系列发展成结膜(巩膜)乳头并最终在许多脊椎动物的眼睛中诱导一系列巩膜小骨的胎盘。本研究建立了氢化可的松注射程序(包括。剂量)始终抑制胚胎鸡眼中的所有结膜乳头。这种氢化可的松治疗对细胞凋亡的影响,脉管系统,和胎盘相关基因的表达进行了评估。
    结果:氢化可的松治疗不会增加凋亡性细胞死亡,也不会对眼中的睫状动脉或血管丛产生重大影响。β-catenin和Eda表达水平在氢化可的松治疗后没有显著改变,尽管没有结膜乳头。值得注意的是,Fgf20表达在氢化可的松治疗后显著降低,β-catenin的分布发生了改变。
    结论:我们的研究表明,结膜乳头诱导早在HH27.5(E5.5)开始。氢化可的松治疗可独立于β-连环蛋白和Eda降低Fgf20表达,并且可能会影响Wnt/β-连环蛋白或Eda/Edar途径的其他成员,或者它可能影响形态发生素通过细胞外基质扩散的能力。这项研究有助于在placode发育过程中不断增长的基因表达数据,并增强了我们对某些脊椎动物眼睛如何发育这些迷人骨骼的理解。
    BACKGROUND: Conjunctival placodes are a series of placodes that develop into the conjunctival (scleral) papillae and ultimately induce a series of scleral ossicles in the eyes of many vertebrates. This study establishes a hydrocortisone injection procedure (incl. dosage) that consistently inhibits all conjunctival papillae in the embryonic chicken eye. The effects of this hydrocortisone treatment on apoptosis, vasculature, and placode-related gene expression were assessed.
    RESULTS: Hydrocortisone treatment does not increase apoptotic cell death or have a major effect on the ciliary artery or vascular plexus in the eye. β-catenin and Eda expression levels were not significantly altered following hydrocortisone treatment, despite the absence of conjunctival papillae. Notably, Fgf20 expression was significantly reduced following hydrocortisone treatment, and the distribution of β-catenin was altered.
    CONCLUSIONS: Our study showed that conjunctival papillae induction begins as early as HH27.5 (E5.5). Hydrocortisone treatment reduces Fgf20 expression independently of β-catenin and Eda and may instead affect other members of the Wnt/β-catenin or Eda/Edar pathways, or it may affect the ability of morphogens to diffuse through the extracellular matrix. This study contributes to a growing profile of gene expression data during placode development and enhances our understanding of how some vertebrate eyes develop these fascinating bones.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    诱导后低血压(MAP<65mmHg)经常发生,通常由所用麻醉诱导药物的心血管不良反应引起。我们假设,当不同剂量的异丙酚和瑞芬太尼用于麻醉诱导时,低血压的发生率和严重程度会有临床上的显着差异。
    方法:这是一项随机对照试验的二次分析,其中四组(A-D)患者接受了四种不同的异丙酚和瑞芬太尼组合中的一种,根据Bouillon相互作用模型,滴定到对喉镜检查(PTOL)的耐受性概率的预测等效度。在A组中,给予高剂量异丙酚和低剂量瑞芬太尼,在各组中,该比率逐渐改变,直到D组逆转为止。平均动脉压和收缩压(MAP,SAP)在四个时间点进行比较(Tbaseline,Tpost-bolus,T3min,Tnadir)组内和组间心率,比较脑电双频指数(BIS)和低血压的发生率。
    结果:使用来自76例患者的数据。在Tpost推注时,在A组与D组中发现统计学上显著较低的MAP和SAP(p=0.011和p=0.002)。与C组和D组相比,A组和B组的T3min和Tnadir心率明显更高(p=<0.001和p=0.002)。在T3min和Tnadir时,所有组的BIS值均存在显着差异(均p<0.001)。所有其他结果在组间没有显著差异。
    结论:在麻醉诱导过程中,丙泊酚和瑞芬太尼不同的预测等效组合诱导麻醉确实导致了统计学上不同但临床上不相关的血流动力学终点差异。我们的研究无法确定降低诱导后低血压风险的优选药物组合,尽管它们都产生了相似的预测PTOL。
    Post-induction hypotension (MAP < 65 mmHg) occurs frequently and is usually caused by the cardiovascular adverse effects of the anaesthetic induction drugs used. We hypothesize that a clinically significant difference in the incidence and severity of hypotension will be found when different doses of propofol and remifentanil are used for induction of anaesthesia.
    METHODS: This is a secondary analysis of a randomised controlled trial wherein four groups (A-D) of patients received one out of four different combinations of propofol and remifentanil, titrated to a predicted equipotency in probability of tolerance to laryngoscopy (PTOL) according to the Bouillon interaction model. In group A, a high dose of propofol and a low dose of remifentanil was administered, and across the groups this ratio was gradually changed until it was reversed in group D. Mean and systolic arterial blood pressure (MAP, SAP) were compared at four time points (Tbaseline, Tpost-bolus, T3min, Tnadir) within and between groups Heart rate, bispectral index (BIS) and the incidence of hypotension were compared.
    RESULTS: Data from 76 patients was used. At Tpost-bolus a statistically significant lower MAP and SAP was found in group A versus D (p = 0.011 and p = 0.002). A significant higher heart rate was found at T3min and Tnadir between groups A and B when compared to groups C and D (p = < 0.001 and p = 0.002). A significant difference in BIS value was found over all groups at T3min and Tnadir (both p < 0.001). All other outcomes did not differ significantly between groups.
    CONCLUSIONS: Induction of anaesthesia with different predicted equipotent combinations of propofol and remifentanil did result in statistically different but clinically irrelevant differences in haemodynamic endpoints during induction of anaesthesia. Our study could not identify preferable drug combinations that decrease the risk for hypotension after induction, although they all yield a similar predicted PTOL.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    转录因子在调节赋予杀虫剂抗性的解毒基因(例如P450)的表达中起重要作用。我们先前的研究确定了一系列候选转录因子(CYP6B7-氰戊菊酯缔合蛋白,CAPs)可能与氰戊菊酯诱导的CYP6B7在棉铃虫的田间HDTJ品系中的表达有关。这些CAPs是否可以介导氰戊菊酯诱导的CYP6B7在棉铃虫易感HDS品系中的转录物仍然未知。进一步研究表明,氰戊菊酯在HDS菌株中显著诱导了多种CAPs的表达水平。CAP19[脂肪酸合成酶样(FAS)]的敲低,CAP22[含多糖生物合成结构域的蛋白1(PBDC1)],CAP24[5-甲酰四氢叶酸环化酶(5-FCL)],CAP30[肽聚糖识别蛋白LB样(PGRP)]和CAP33[NADH脱氢酶[泛醌]1α亚复合物亚基11(NDUFA11)]导致CYP6B7和其他一些P450基因表达的显着抑制;同时,HDS菌株幼虫对氰戊菊酯的敏感性显着提高。此外,PBDC1,PGRP和NDUFA11,单独或组合,能显著增强HDS菌株CYP6B7启动子的活性,以及CYP6B7基因在Sf9细胞系中的表达水平。这些结果表明,PBDC1,PGRP和NDUFA11可能参与了棉铃虫HDS株对氰戊菊酯的关键解毒基因的转录调控。
    Transcription factors play an important role in regulating the expression of detoxification genes (e.g. P450s) that confer insecticide resistance. Our previous study identified a series of candidate transcription factors (CYP6B7-fenvalerate association proteins, CAPs) that may be related to fenvalerate-induced expression of CYP6B7 in a field HDTJ strain of H. armigera. Whether these CAPs can mediate the transcript of CYP6B7 induced by fenvalerate in a susceptible HDS strain of H. armigera remains unknown. Further study showed that the expression levels of multiple CAPs were significantly induced by fenvalerate in HDS strain. Knockdown of CAP19 [fatty acid synthase-like (FAS)], CAP22 [polysaccharide biosynthesis domain-containing protein 1 (PBDC1)], CAP24 [5-formyltetrahydrofolate cycloligase (5-FCL)], CAP30 [peptidoglycan recognition protein LB-like (PGRP)] and CAP33 [NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11 (NDUFA11)] resulted in significant inhibition of CYP6B7 and some other P450 genes expression; meanwhile, the sensitivity of HDS strain larvae to fenvalerate was significantly increased. In addition, PBDC1, PGRP and NDUFA11, either alone or in combination, could significantly enhance the activity of CYP6B7 promoter in HDS strain, as well as the expression level of CYP6B7 gene in Sf9 cells line. These results suggested that PBDC1, PGRP and NDUFA11 may be involved in the transcript regulation of key detoxifying genes in response to fenvalerate in HDS strain of H. armigera.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    背景:患有严重主动脉瓣狭窄(AS)的患者在全身麻醉诱导期间特别容易发生低血压,这增加了术后发病率和死亡率。尽管已经报道了单剂量升压药对麻醉诱导的低血压的预防作用,持续输注升压药的效果尚不清楚.本研究旨在评估经导管主动脉瓣置换术(TAVR)的严重AS患者全身麻醉诱导期间去甲肾上腺素(NAd)输注对血流动力学稳定性的影响。
    方法:这种单中心,回顾性研究包括接受选择性TAVR的重度AS患者.NAd组的患者从麻醉诱导开始接受0.1μg/kg/min的持续预防性NAd输注。对照组根据低血压的发生情况接受肌力剂和血管加压药。主要结果是手术开始前的最低平均血压(MBP)。
    结果:该研究包括NAd组68例患者和对照组113例患者。NAd组手术开始前最低MBP明显高于对照组(63±15vs47±13mmHg,P<0.01)。NAd组插管前的MBP也显着升高(75±17vs57±16mmHg,P<0.01)。两组之间术后并发症的差异可以忽略不计。
    结论:重度AS患者持续给予0.1μg/kg/min的NAd可以预防TAVR全身麻醉诱导期间的低血压。
    BACKGROUND: Patients with severe aortic valve stenosis (AS) are particularly prone to developing hypotension during general anesthesia induction, which increases postoperative morbidity and mortality. Although the preventive effect of a single vasopressor dose on anesthesia-induced hypotension has been reported, the effects of continuous vasopressor infusion are unknown. This study aimed to assess the effect of noradrenaline (NAd) infusion on hemodynamic stability during general anesthesia induction in severe AS patients undergoing transcatheter aortic valve replacement (TAVR).
    METHODS: This single-center, retrospective study included severe AS patients who underwent elective TAVR. Patients in the NAd group received a continuous prophylactic NAd infusion of 0.1 μg/kg/min from the time of anesthesia induction. The control group received inotropes and vasopressors as indicated by the occurrence of hypotension. The primary outcome was the lowest mean blood pressure (MBP) before the start of surgery.
    RESULTS: The study included 68 patients in the NAd group and 113 in the control group. The lowest MBP before the start of surgery was significantly higher in the NAd group than in the control group (63 ± 15 vs 47 ± 13 mmHg, P < 0.01). MBP immediately before intubation was also significantly higher in the NAd group (75 ± 17 vs 57 ± 16 mmHg, P < 0.01). Differences in postoperative complications between the groups were negligible.
    CONCLUSIONS: Continuous administration of NAd at 0.1 μg/kg/min in patients with severe AS might prevent hypotension during general anesthesia induction for TAVR.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:对于需要引产的妇女,过量的静脉输液可能会对分娩时间和产妇/新生儿结局产生不利影响。
    目的:本研究旨在确定低背景输液率的产程和结局的差异,与宽松的背景静脉输液管理相比。
    方法:对200名在单一机构接受引产的妇女进行了一项双盲随机对照试验研究。女性被随机分配给40mL/h与250mL/h的Hartmann溶液的静脉注射速率。严格控制流体推注以限制偏差。该试验已在澳大利亚临床试验注册中心注册:ACTRN12621001298808。
    结果:接受的液体总量分析显示分离良好,第1组(40mL/h)比第2组(250mL/h)少1,736mL,中位数(四分位数间距)841mL(458,1691)与2,577mL(1620,4326)(P<0.001)。第1组的中位分娩时间缩短了24分钟(P=ns)。对未分娩妇女的子集分析表明,第1组的分娩时间缩短了83.5分钟(P=ns)。
    结论:由于这是一项初步研究,在分娩时间或次要结局方面未见显著差异.鉴于越来越多的未分娩妇女引产,潜在的不良母婴结局和相关的较高的手术分娩率,这项研究指导了功率计算,并为未来研究这些妇女在引产期间的最佳液体管理提供了概念验证。
    BACKGROUND: Excess intravenous fluid for women requiring an induction of labour may adversely affect the duration of labour and maternal/neonatal outcomes.
    OBJECTIVE: This study aimed to determine the difference in duration of labour and outcomes with a low background infusion rate, compared to liberal background intravenous fluid management.
    METHODS: A double blind randomised controlled pilot study was performed on 200 women who underwent induction of labour at a single institution. Women were randomised to an intravenous rate of 40 mL/h versus 250 mL/h of Hartmann\'s solution. Fluid boluses were strictly controlled to limit bias. This trial was registered with the Australian clinical trial registry: ACTRN12621001298808.
    RESULTS: Analysis of the total amount of fluid received showed good separation with Group 1 (40 mL/h) receiving 1,736 mL less than Group 2 (250 mL/h), median (interquartile range) 841 mL (458, 1691) versus 2,577 mL (1620, 4326) (P < 0.001). Median duration of labour was shorter in Group 1 by 24 min (P = ns). Subset analysis of nulliparous women showed that duration of labour was shorter in Group 1 by 83.5 min (P = ns).
    CONCLUSIONS: As this was a pilot study, a significant difference in duration of labour or secondary outcomes was not seen. Given the increasing numbers of nulliparous women having an induction of labour, potential for adverse maternal and neonatal outcomes and the associated higher rate of operative birth, this study guides power calculations and supports proof of concept for future research into optimum fluid management during induction of labour for these women.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:本研究旨在评估低剂量口服米索前列醇的诱导,并比较Bishop评分小于6的患者在二线诱导中使用的不同方法。
    方法:这项回顾性研究分析了2021年4月至2022年6月在大学医院中心接受一线低剂量口服米索前列醇(每4小时50μg,共200μg/24小时)的所有患者的病史和妊娠过程。并根据二线诱导方法报告结果。
    结果:在437例低剂量口服米索前列醇引产中,120名患者需要二线诱导。一线失败的预测因素是较高的体重指数(P=0.011),没有胎膜早破(P=0.021)和妊娠早期(P<0.001)。关于第二种引产方法,催产素组从诱导到分娩的时间短于地诺前列酮和米索前列醇组(24.0vs.41和51.0小时,分别为;P<0.001),地诺前列酮组也明显短于米索前列醇组(P=0.048)。三组的剖宫产率无差异(P=0.651)。两组之间的不良事件没有临床显着差异。
    结论:正常体重指数,在一线口服米索前列醇治疗期间,胎膜破裂前和引产后是三个有利的成功因素.在Bishop评分<6的情况下,催产素可能是减少分娩持续时间的最佳选择,具有相同的母胎结局,包括类似的阴道分娩率。
    OBJECTIVE: The present study aimed to evaluate low-dose oral misoprostol induction, and compare different methods used in second-line induction in patients with a Bishop score less than 6.
    METHODS: This retrospective study analyzed the medical history and courses of pregnancy of all patients induced with first-line of low-dose oral misoprostol (50 μg every 4 h with a total of 200 μg/24 h) from April 2021 to June 2022 in a university hospital center, and reported outcomes according to the second-line method of induction.
    RESULTS: Among 437 labor inductions with low-dose oral misoprostol, 120 patients required a second-line induction. Predictive factors of first-line failure were higher body mass index (P = 0.011), absence of premature rupture of membranes (P = 0.021) and earlier term of pregnancy (P < 0.001). Regarding second methods of induction of labor, time from induction to delivery was shorter in the oxytocin group than the dinoprostone and misoprostol groups (24.0 vs. 41 and 51.0 h, respectively; P < 0.001), and was also significantly shorter in the dinoprostone than the misoprostol group (P = 0.048). Cesarean section rates did not differ between the three groups (P = 0.651). There were no clinically significant differences in adverse events between the groups.
    CONCLUSIONS: Normal body mass index, previous rupture of membranes and later term of induction of labor were the three favoring success factors during first-line oral misoprostol. In cases of a Bishop score <6, oxytocin may be the best option to reduce duration to delivery, with the same maternal-fetal outcomes, including a similar rate of vaginal delivery.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:通过使用磁共振成像(MRI)评估胎儿体重(EFW)作为二线确认成像来模拟Boulvain试验的结果。
    方法:来自Boulvain试验和PREMACRO(预测MACROsomia)研究的数据用于模拟1000名患者的试验。Boulvain的试验将引产(IOL)与疑似巨大儿的期待管理进行了比较,而PREMACRO研究比较了超声-EFW(US-EFW)和MRI-EFW在预测出生体重方面的表现。主要结果是明显的肩难产(SD)的发生率。剖腹产(CD),高胆红素血症(HB),选择妊娠<39周(WG)的IOL作为次要结局。对Boulvain试验进行了亚组分析,以估计两个研究组的真阳性和假阳性组的主要和次要结局的发生率。灵敏度,特异性,阳性和阴性预测值(PPV,NPV)用于通过MRI-EFW预测36个WG的巨大儿,并为每个结果构建决策树。
    结果:在PREMACRO试验中US-EFW预测巨大儿的PPV为56.3%。MRI-EFW作为预测工具优于US-EFW,导致假阳性病例的诱导率较低。使用MRI-EFW作为二线测试重复Boulvain的试验将导致类似的SD率(相对风险[RR]:0.36),CD(RR:0.84),和新生儿HB(RR:2.6),就像最初的审判一样。增加MRI-EFW的敏感性和特异性导致SD的相对风险与Boulvain的试验相似,但随着IOL<39WG的发生率降低,改善CD的RR有利于IOL。我们发现US-EFW和MRI-EFW的IOL率与SD发生率呈负相关,虽然IOL的总体发生率,CD,根据MRI得出的胎儿体重估计值,新生儿HB会更低。
    结论:MRI-EFW诊断巨大儿的准确性优于US-EFW可能导致IOL的发生率较低,而不会损害干预措施的相对优势,但未能证明使用MRI-EFW作为二线测试来证明复制原始试验的显着益处。
    OBJECTIVE: To simulate the outcomes of Boulvain\'s trial by using magnetic resonance imaging (MRI) for estimated fetal weight (EFW) as a second-line confirmatory imaging.
    METHODS: Data derived from the Boulvain\'s trial and the study PREMACRO (PREdict MACROsomia) were used to simulate a 1000-patient trial. Boulvain\'s trial compared induction of labor (IOL) to expectant management in suspected macrosomia, whereas PREMACRO study compared the performance of ultrasound-EFW (US-EFW) and MRI-EFW in the prediction of birthweight. The primary outcome was the incidence of significant shoulder dystocia (SD). Cesarean delivery (CD), hyperbilirubinemia (HB), and IOL at < 39 weeks of gestation (WG) were selected as secondary outcomes. A subgroup analysis of the Boulvain\'s trial was performed to estimate the incidence of the primary and secondary outcomes in the true positive and false positive groups for the two study arms. Sensitivity, specificity, positive and negative predictive values (PPV, NPV) for the prediction of macrosomia by MRI-EFW at 36 WG were calculated, and a decision tree was constructed for each outcome.
    RESULTS: The PPV of US-EFW for the prediction of macrosomia in the PREMACRO trial was 56.3 %. MRI-EFW was superior to US-EFW as a predictive tool resulting in lower rates of induction for false-positive cases. Repeating Boulvain\'s trial using MRI-EFW as a second-line test would result in similar rates of SD (relative risk [RR]:0.36), CD (RR:0.84), and neonatal HB (RR:2.6), as in the original trial. Increasing the sensitivity and specificity of MRI-EFW resulted in a similar relative risk for SD as in Boulvain\'s trial, but with reduced rates of IOL < 39 WG, and improved the RR of CD in favor of IOL. We found an inverse relationship between IOL rate and incidence of SD for both US-EFW and MRI-EFW, although overall rates of IOL, CD, and neonatal HB would be lower with MRI-derived estimates of fetal weight.
    CONCLUSIONS: The superior accuracy of MRI-EFW over US-EFW for the diagnosis of macrosomia could result in lower rates of IOL without compromising the relative advantages of the intervention but fails to demonstrate a significant benefit to justify a replication of the original trial using MRI-EFW as a second-line test.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    高剂量类固醇被推荐用于诱发特发性肾病综合征。这项研究的目的是比较标准诱导治疗与霉酚酸酯(MMF)。我们假设MMF在维持类固醇诱导的缓解方面可能不劣于类固醇。第二个目标是减少类固醇引起的副作用。
    这是一项观察性研究。
    在标准类固醇治疗2周内进入缓解期的2-11年肾病综合征首发患者符合入选条件。实验组患者完成了12周的MMF诱导,而对照组继续标准的12周类固醇方案。
    MMF和泼尼松龙用于研究。
    主要研究结果是52周随访期间的复发率和无复发间隔。
    描述性统计用于分析。
    41名符合条件的患者中有10名同意参加MMF组,8名完成了研究。对照组包括31例患者,23例完成52周随访的患者。在诱导阶段,MMF组10例患者中有3例(30%),对照组31例中有1例(3%)复发(P=0.04)。在52周的随访期间,MMF组10例患者中有7例(70%),对照组31例中有19例(61%)复发(P=0.72)。MMF组和对照组的中位无复发间隔为11周和19周,分别为(P=0.60)。两组均无严重副作用。
    本研究的局限性是接受MMF和单中心设计的患者数量少。
    我们的一小组接受MMF治疗的患者报告在诱导阶段有较高的复发率。然而,随访12个月时,两组的复发率和无复发间期相似.所有患者均耐受MMF,无明显副作用,那些复发的人仍然对类固醇敏感。
    尽管已知其副作用,类固醇仍然是儿童新发肾病综合征的标准诱导疗法。这项研究的目的是评估霉酚酸酯(MMF)在维持类固醇诱导的缓解方面是否可以像类固醇一样成功。在类固醇治疗2周内获得缓解的患者要么继续使用类固醇再治疗10周,要么改用MMF。研究结果表明,MMF组的复发率和感染率更高。到12个月,两组之间的复发率和无复发间隔没有差异。正在进行更大的多中心研究,以证明MMF在类固醇敏感性肾病综合征中对类固醇的非劣效性。
    UNASSIGNED: High-dose steroids are recommended for the induction of idiopathic nephrotic syndrome. The aim of this study was to compare standard induction therapy with Mycophenolate Mofetil (MMF). We hypothesized that MMF could be noninferior to steroids in maintaining steroid-induced remission. The second aim was to reduce steroid-induced side effects.
    UNASSIGNED: This was an observational study.
    UNASSIGNED: Patients 2-11 years with first episode of nephrotic syndrome who entered remission within 2 weeks of standard steroid treatment were eligible for enrollment. Patients in the experimental group completed 12-week induction with MMF, whereas the control group continued a standard 12-week steroid protocol.
    UNASSIGNED: MMF and prednisolone were used in the study.
    UNASSIGNED: The primary study outcomes were relapse rate and relapse-free interval during a 52-week follow-up.
    UNASSIGNED: Descriptive statistics were used for analysis.
    UNASSIGNED: Ten of 41 eligible patients consented to participate in the MMF group and 8 completed the study. The control group included 31 patients, with 23 patients who completed 52 weeks follow-up. During the induction phase, 3 out of 10 patients (30%) in the MMF group and 1 out of 31 (3%) in the control group (P = 0.04) developed relapse. During the 52 weeks follow-up period, 7 out of 10 patients (70%) in the MMF group and 19 out of 31 (61%) in the control group developed relapse (P = 0.72). The median relapse-free interval was 11 and 19 weeks in MMF and control groups, respectively (P = 0.60). No serious side effects were recorded in either group.
    UNASSIGNED: The limitations of the study were low patient numbers receiving MMF and single-center design.
    UNASSIGNED: Our small cohort of patients treated with MMF reported a higher relapse rate during the induction phase. However, by 12 months of follow-up the relapse rate and relapse-free intervals were similar between both groups. All patients tolerated MMF without significant side effects, and those who relapsed remained steroid-sensitive.
    Despite their known side effects steroids remain a standard induction therapy for new onset nephrotic syndrome in children. The aim of this study was to assess whether mycophenolate mofetil (MMF) can be as successful as steroids in maintaining steroid-induced remission. Patients who achieved remission within 2 weeks of steroid treatment had either continued steroids for an additional 10 weeks or switched to MMF. The results of the study showed a higher relapse and infection rate in the MMF group. By 12 months there were no differences in the relapse rate and relapse-free interval between the groups. Larger multicenter studies are underway to demonstrate noninferiority of MMF to steroids in steroid-sensitive nephrotic syndrome.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号