Purpura

紫癜
  • 文章类型: Journal Article
    背景:缺乏关于免疫性血小板减少性紫癜(ITP)的基本临床困境的高质量证据,突显了对与当地治疗背景相关的现代指南的需求。ITP通过排除来诊断,具有实验室发现的孤立性血小板减少症的标志。
    出血,需要家庭和用药史以及对历史调查的回顾,以评估出血风险和可能的遗传性综合征.除了血小板计数,治疗的决定受到个体出血风险的影响,疾病阶段,治疗的副作用,合并用药,患者偏好。治疗旨在实现血小板计数>20×109/L,避免严重出血。类固醇是标准的一线治疗,使用6周逐渐减少的泼尼松疗程或重复的高剂量地塞米松疗程可提供相同的疗效。静脉免疫球蛋白可用于围手术期或与类固醇联合作为一线治疗。
    关于二线治疗的选择没有共识。最有力证据的选择包括脾切除术,利妥昔单抗和血小板生成素受体激动剂。其他疗法包括硫唑嘌呤,霉酚酸酯,氨苯砜和长春花生物碱。鉴于多达三分之一的患者达到了令人满意的止血反应,如果可能,脾切除术应延迟至少12个月.在危及生命的出血中,我们建议输注血小板来达到止血,还有静脉注射免疫球蛋白和高剂量类固醇.
    BACKGROUND: The absence of high quality evidence for basic clinical dilemmas in immune thrombocytopenic purpura (ITP) underlines the need for contemporary guidelines relevant to the local treatment context. ITP is diagnosed by exclusions, with a hallmark laboratory finding of isolated thrombocytopenia.
    UNASSIGNED: Bleeding, family and medication histories and a review of historical investigations are required to gauge the bleeding risk and possible hereditary syndromes. Beyond the platelet count, the decision to treat is affected by individual bleeding risk, disease stage, side effects of treatment, concomitant medications, and patient preference. Treatment is aimed at achieving a platelet count > 20 × 109 /L, and avoidance of severe bleeding. Steroids are the standard first line treatment, with either 6-week courses of tapering prednisone or repeated courses of high dose dexamethasone providing equivalent efficacy. Intravenous immunoglobulin can be used periprocedurally or as first line therapy in combination with steroids.
    UNASSIGNED: There is no consensus on choice of second line treatments. Options with the most robust evidence include splenectomy, rituximab and thrombopoietin receptor agonists. Other therapies include azathioprine, mycophenolate mofetil, dapsone and vinca alkaloids. Given that up to one-third of patients achieve a satisfactory haemostatic response, splenectomy should be delayed for at least 12 months if possible. In life-threatening bleeding, we recommend platelet transfusions to achieve haemostasis, along with intravenous immunoglobulin and high dose steroids.
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  • 文章类型: Journal Article
    背景:血小板生成素受体激动剂(TPO-RA)用于治疗原发性免疫性血小板减少症(ITP)。一些患者在维持止血血小板计数的同时停止治疗。
    目标:就ITP中何时考虑逐渐减少TPO-RA达成专家共识,如何减少患者的治疗,停药后如何监测患者,以及如何重新开始治疗。
    方法:我们使用了RAND/UCLA修改的Delphi面板方法。评级由每个专家在会议之前和之后独立完成。第二轮评级用于制定小组的指导。该小组是双盲的:赞助商和非主席专家不知道彼此的身份。
    结果:根据患者血小板计数制定了关于儿童和成人TPO-RA何时适合锥化的指南,出血史,加强治疗,创伤风险,和使用抗凝剂/血小板抑制剂。例如,在血小板计数正常/高于正常的患者中逐渐减少TPO-RA是合适的,没有大出血史,并且在过去6个月中不需要加强治疗;对于血小板计数低的患者,不宜逐渐减少TPO-RA。ITP持续时间,在TPO-RA上的几个月,或血小板对TPO-RA的反应时机对小组关于锥度适当性的指导没有影响。关于如何减少患者的治疗的指导,停药后如何监测患者,以及如何重新开始治疗也提供了。
    结论:本指南可以支持临床决策和临床试验的发展,前瞻性测试逐渐减少TPO-RA的安全性。
    BACKGROUND: Thrombopoietin receptor agonists (TPO-RAs) are used to treat primary immune thrombocytopenia (ITP). Some patients have discontinued treatment while maintaining a hemostatic platelet count.
    OBJECTIVE: To develop expert consensus on when it is appropriate to consider tapering TPO-RAs in ITP, how to taper patients off therapy, how to monitor patients after discontinuation, and how to restart therapy.
    METHODS: We used a RAND/UCLA modified Delphi panel method. Ratings were completed independently by each expert before and after a meeting. Second-round ratings were used to develop the panel\'s guidance. The panel was double-blinded: The sponsor and nonchair experts did not know each other\'s identities.
    RESULTS: Guidance on when it is appropriate to taper TPO-RAs in children and adults was developed based on patient platelet count, history of bleeding, intensification of treatment, trauma risk, and use of anticoagulants/platelet inhibitors. For example, it is appropriate to taper TPO-RAs in patients who have normal/above-normal platelet counts, have no history of major bleeding, and have not required an intensification of treatment in the past 6 months; it is inappropriate to taper TPO-RAs in patients with low platelet counts. Duration of ITP, months on TPO-RA, or timing of platelet response to TPO-RA did not have an impact on the panel\'s guidance on appropriateness to taper. Guidance on how to taper patients off therapy, how to monitor patients after discontinuation, and how to restart therapy is also provided.
    CONCLUSIONS: This guidance could support clinical decision making and the development of clinical trials that prospectively test the safety of tapering TPO-RAs.
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  • 文章类型: Journal Article
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  • 文章类型: Consensus Development Conference
    Atopic eczema is a chronic inflammatory disease affecting about 30% of Australian and New Zealand children. Severe eczema costs over AUD 6000/year per child in direct medical, hospital and treatment costs as well as time off work for caregivers and untold distress for the family unit. In addition, it has a negative impact on a child\'s sleep, education, development and self-esteem. The treatment of atopic eczema is complex and multifaceted but a core component of therapy is to manage the inflammation with topical corticosteroids (TCS). Despite this, TCS are often underutilised by many parents due to corticosteroid phobia and unfounded concerns about their adverse effects. This has led to extended and unnecessary exacerbations of eczema for children. Contrary to popular perceptions, (TCS) use in paediatric eczema does not cause atrophy, hypopigmentation, hypertrichosis, osteoporosis, purpura or telangiectasia when used appropriately as per guidelines. In rare cases, prolonged and excessive use of potent TCS has contributed to striae, short-term hypothalamic-pituitary-adrenal axis alteration and ophthalmological disease. TCS use can also exacerbate periorificial rosacea. TCS are very effective treatments for eczema. When they are used to treat active eczema and stopped once the active inflammation has resolved, adverse effects are minimal. TCS should be the cornerstone treatment of atopic eczema in children.
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    文章类型: Journal Article
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  • 文章类型: Comparative Study
    BACKGROUND: The evaluation of febrile children with petechial rashes evokes controversy. Although many of these children have viral infections, on occasion such patients may be infected with Neisseria meningitidis.
    OBJECTIVE: To investigate differences in practice trends for the evaluation and management of non-toxic-appearing febrile children with petechial rashes among pediatric specialty groups.
    METHODS: We surveyed 833 pediatricians in 4 specialties [community (CGP) and academic (AGP) general pediatrics, emergency medicine (EM) and infectious diseases] regarding 4 hypothetical non-toxic-appearing febrile children ages 1, 2, 5 and 7 years. The patients differed with regard to clinical appearance, distribution of petechiae and complete blood count results. We compared specialty group responses, adjusting for practice setting, population size and years in practice using multiple logistic regression analysis.
    RESULTS: The survey was completed and returned by 416 (50%) pediatricians. There was substantial variation in the evaluation of the 2 younger febrile children without clear sources for their petechiae. For the 1-year-old the overall blood culture (BCx) rate was 82%, with the EM group (91%) more often requesting BCx than either the CGP (76%) or AGP (73%, P=0.001) groups. The overall hospital admission rate was 31%, with CGP less often requesting admission than infectious disease pediatricians (22% vs. 40%, P=0.007). In the regression analysis the only significant difference between groups was in BCx rate between the EM and AGP groups. For the 2-year-old the overall rate of BCx was 95%, lumbar puncture was 41% and admission was 44%, with no significant differences among groups. For the scenarios involving the 2 older febrile children with sources for their petechiae, the majority of respondents chose neither lumbar puncture nor admission. There was disagreement regarding BCx, both within and between groups, although most of the between group differences did not persist in the regression analysis.
    CONCLUSIONS: There are substantial differences among pediatricians in the evaluation of young non-toxic-appearing febrile children with petechial rashes. Although there are some differences between pediatric subspecialties, most of these differences do not persist after adjusting for practice setting, population size and physician experience.
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