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Status of Medical Laboratory Science Faculty and Programs 医学检验科学学院和专业现状
Pub Date : 2023-04-27 DOI: 10.29074/ascls.2020002428
V. Freeman, K. Brown, JoAnn Parker Fenn, Karen Fong, J. Genzen, Nancy Goodyear, Mary Lunz Houston, Terry Taff, P. Tanabe
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引用次数: 0
Isolation of Airborne, Antimicrobial-resistant Bacteria Associated With Livestock 与家畜有关的空气传播的抗微生物细菌的分离
Pub Date : 2023-04-27 DOI: 10.29074/ascls.2020003004
S. Travis Altheide, C. Pinion
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引用次数: 0
Molecular Action of ADAMTS13 and Transfusion Therapies of Thrombotic Thrombocytopenia Pupura ADAMTS13的分子作用与血小板减少性Pupura的输血治疗
Pub Date : 2020-08-01 DOI: 10.29074/ascls.120.002287
B. Ketelsen
Thrombotic Thrombocytopenia Pupura (TTP) is a disease that is classified by abnormal functioning of the ADAMTS13 protease. ADAMTS13 protease impairment can be caused by genetic mutations at the gene level or through autoantibodies that are formed within the circulation. Congenital mutations account for about 5-10% of the TTP population while the acquired version is more common. The acquired version of TTP is due to inhibitory and non-inhibitory autoantibodies that affect the ADAMTS13 protease. Both congenital and acquired TTP are treated through transfusion therapy with therapeutic plasma exchange (TPE). TPE is used to remove the autoantibodies and any mutated ADAMTS13 proteases in the circulation while providing the addition of normal functioning ADAMTS13 to the circulation.
血栓性血小板减少性Pupura (TTP)是一种由ADAMTS13蛋白酶功能异常分类的疾病。ADAMTS13蛋白酶损伤可由基因水平的基因突变或通过循环中形成的自身抗体引起。先天性突变约占TTP人群的5-10%,而获得性版本更为常见。获得性TTP是由于影响ADAMTS13蛋白酶的抑制性和非抑制性自身抗体。先天性和获得性TTP均可通过输血治疗血浆交换(TPE)治疗。TPE用于去除循环中的自身抗体和任何突变的ADAMTS13蛋白酶,同时为循环提供正常功能的ADAMTS13。
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引用次数: 0
Innovative Approach to Moderating Risk of Nosocomial Infection During Anesthesia 降低麻醉期间医院感染风险的创新方法
Pub Date : 2020-08-01 DOI: 10.29074/ascls.120.002246
T. C. Davis, M. Jamerson, Sarah A. Marrs, Ronsard Daniel, C. Biddle
Infection control concerns abound in the surgical anesthesia workstation placing patients and providers at significant, documented risk as a result of many factors including provider hand hygiene lapses, equipment design and complexity, and challenging disinfection. We performed a trial to mitigate cross-contamination involving 30 general anesthesia surgical cases matched 1:1 as control (no intervention) or intervention group (condom-like barriers to four anesthesia workstation components that are frequently touched and contaminated, and very difficult to disinfect). Wraps were removed at case end, then replaced with fresh ones before the start of the subsequent case. Baseline culture samples were obtained prior to the first surgical case of the day in each room, then performed on cases that followed in each room over a 3-day period. Baseline colony formation units density was equivalent in both conditions with total density significantly lower in the covered/wrapped (Mean Rank = 5.81) vs uncovered condition (Mean Rank = 11.19) at p
手术麻醉工作站的感染控制问题大量存在,由于许多因素,包括提供者的手部卫生失误、设备设计和复杂性以及具有挑战性的消毒,使患者和提供者处于重大的、有记录的风险中。我们进行了一项减少交叉污染的试验,涉及30例全麻手术病例,对照(无干预)和干预组(四个经常接触和污染且很难消毒的麻醉工作站组件的安全套状屏障),比例为1:1。包装在案件结束时被拆除,然后在随后的案件开始之前换上新的包装。在每个房间当天的第一例手术病例之前获得基线培养样本,然后在每个房间进行为期3天的后续病例。基线菌落形成单位密度在两种情况下都是相等的,在p。覆盖/包裹条件下(平均Rank = 5.81)的总密度显著低于未覆盖条件(平均Rank = 11.19)
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引用次数: 0
Pathophysiology of Thrombotic Thrombocytopenia Purpura 血栓性血小板减少性紫癜的病理生理学
Pub Date : 2020-08-01 DOI: 10.29074/ascls.120.002261
Larry J. Smith
This review describes classical thrombotic thrombocytopenic purpura (TTP), discusses the pathogenesis of acquired and congenital TTP, describes clinical and laboratory manifestations observed in patients, and lists treatment options for managing patients with TTP. TTP is a rare hematologic disorder characterized by thrombocytopenia and microangiopathic hemolytic anemia (MAHA). It results from a congenital or acquired deficiency of ADAMTS13 in plasma. Most cases are due to an autoimmune mechanism that interferes with ADAMTS13, however rare inherited forms of TTP have been described (Upshaw-Shulman syndrome, USS). It is still considered a life-threatening disease with a mortality rate of 10-20%. Severe deficiency of ADAMTS13 (
本文综述了经典血栓性血小板减少性紫癜(TTP),讨论了获得性和先天性TTP的发病机制,描述了患者观察到的临床和实验室表现,并列出了TTP患者的治疗方案。TTP是一种罕见的血液系统疾病,以血小板减少和微血管病变溶血性贫血(MAHA)为特征。它是由血浆中先天性或后天缺乏ADAMTS13引起的。大多数病例是由于自身免疫机制干扰ADAMTS13,然而罕见的遗传性TTP已被描述(Upshaw-Shulman综合征,USS)。它仍然被认为是一种危及生命的疾病,死亡率为10-20%。严重缺乏ADAMTS13 (
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引用次数: 0
An Overview of the Laboratory's Role in the Diagnosis and Treatment of Thrombotic Thrombocytopenic Purpura 实验室在诊断和治疗血栓性血小板减少性紫癜中的作用综述
Pub Date : 2020-08-01 DOI: 10.29074/ascls.120.002253
B. Ketelsen
Thrombotic thrombocytopenic purpura (TTP) is a multi-faceted disease for a clinical laboratory with diagnosis data and treatment spread across many different laboratory sections. Encompassing results from hematology, chemistry, molecular, and coagulation sections with treatment from the transfusion medicine/Blood Bank section of the laboratory, clinicians are able to accurately diagnosis and treat TTP.
血栓性血小板减少性紫癜(TTP)是一种临床实验室的多方面疾病,诊断数据和治疗分布在许多不同的实验室部门。包括血液学、化学、分子和凝血切片的结果,以及实验室输血医学/血库部门的治疗,临床医生能够准确诊断和治疗TTP。
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引用次数: 0
Laboratory findings in hematology, clinical chemistry, and urinalysis for patients with thrombotic thrombocytopenic purpura 血栓性血小板减少性紫癜患者血液学、临床化学和尿液分析的实验室结果
Pub Date : 2020-08-01 DOI: 10.29074/ascls.120.002279
K. Doig, S. Mcquiston
Laboratory diagnosis of thrombotic thrombocytopenic purpura (TTP) often begins with routine laboratory tests; a complete blood count (CBC), clinical chemistry panel, and urinalysis. The classical findings may include anemia with schistocytes, thrombocytopenia, reticulocytosis or polychromasia, bilirubinemia, dark urine, and hemoglobinuria without red blood cells in the sediment. Additional findings including decreased haptoglobin can identify fragmentation as the cause for the hemolysis. The hemolysis in TTP arises from increased shear stress on red blood cells in arterioles and capillaries narrowed by microthrombi. Hemoglobinemia and schistocytes may generate spurious results in hematology analyzers that require correction before results can be released to the patient chart.
血栓性血小板减少性紫癜(TTP)的实验室诊断通常从常规实验室检查开始;全血细胞计数(CBC),临床化学检查和尿液分析。典型的表现可能包括贫血伴裂细胞、血小板减少、网状红细胞增多症或多色症、胆红素血症、深色尿和无红细胞沉淀的血红蛋白尿。其他发现包括接触珠蛋白降低,可以确定碎片化是溶血的原因。TTP的溶血是由于微血栓使小动脉和毛细血管中的红细胞受到的剪切应力增加而引起的。血红蛋白血症和血吸虫细胞可能在血液学分析仪中产生虚假结果,需要在结果发布到患者图表之前进行纠正。
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引用次数: 0
Effective Marketing Strategies for a Medical Laboratory Science Program 医学实验室科学项目的有效营销策略
Pub Date : 2020-03-03 DOI: 10.29074/ascls.119.002154
Kendal Beazer, Kenton Cummins
The medical field is in dire need of more qualified medical laboratory scientists (MLS) and medical laboratory technicians (MLT). Medical laboratory educational programs are diminishing, and medical staff in hospitals are unaware of the unequivocal value trained lab scientists bring to the quality of their patients’ lab results. The national need for more qualified laboratory testing personnel is outpacing the supply. A survey to determine current marketing trends and methods was sent out to 469 program directors of MLS and/or MLT programs, with a 35% response rate. Responses were compared with proven marketing methods to give marketing suggestions relevant to the MLS field. This paper describes the research in how MLS programs currently market themselves. Explanations of marketing techniques are discussed with the intent to help simplify marketing efforts for a more effective marketing strategy. This study showed that medical and clinical laboratory educational programs nationwide should increase marketing and promote the MLS value to local communities.
医学领域急需更多合格的医学实验室科学家(MLS)和医学实验室技术人员(MLT)。医学实验室教育项目正在减少,医院的医务人员没有意识到训练有素的实验室科学家给病人的实验室结果质量带来的明确价值。国家对更多合格的实验室检测人员的需求超过了供应。一份旨在确定当前营销趋势和方法的调查向MLS和/或MLT项目的469名项目主管发出,回复率为35%。将回应与成熟的营销方法进行比较,以给出与MLS领域相关的营销建议。本文描述了目前MLS项目如何进行自我营销的研究。讨论营销技巧的解释,目的是为了帮助简化营销工作,制定更有效的营销策略。该研究表明,全国范围内的医学和临床实验室教育计划应增加市场营销,并向当地社区推广MLS的价值。
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引用次数: 2
THE CF QUANTUM SWEAT TEST: NOT READY FOR CLINICAL USE cf量子汗液试验:尚未准备好用于临床
Pub Date : 2020-03-03 DOI: 10.29074/ascls.119.002105
M. Rock, V. Legrys
The CF Quantum Test (CFQT) showed promise in a previous pilot study, however there was greater imprecision in one patch lot. Following the pilot study, the manufacturer changed their fabricating procedures. Subjects with previously diagnosed CF or subjects who required a sweat test for clinical reasons were invited to undergo the CFQT research test and a conventional sweat test (Macroduct®; collection and chloride analysis via the ChloroChek®; chloridometer). Previously diagnosed CF (n= 41) and CRMS (CFTR-related metabolic syndrome)/CFSPID (cystic fibrosis screen positive inconclusive diagnosis) (n= 3) patients and patients who required a sweat test for clinical indications (n=22) were recruited to have bilateral CFQT along with the Macroduct®; test performed on the same day. Pairs of data from each test were plotted as a correlation graph, bias plot and Bland Altman plot. Coefficient of variation (CV) between extremities and QNS rates for both tests were calculated.The CV between left and right extremities was greater in the CFQT (9.5%) compared to the Macroduct®; (4.8%). The QNS (quantity not sufficient) rates of the two tests were comparable (CFQT: 6.8%; Macroduct®;: 6.0%). There was greater imprecision with the CFQT results. The diagnostic agreement between the two tests was 100% positive percent agreement (95% CI: 90–100%), 100% negative percent agreement (95% CI: 80–100%), 67% intermediate percent agreement (95% CI: 30%–80%), and 92% overall percent agreement (95% CI: 80–100%). This follow-up study demonstrated that the CFQT is not analytically nor diagnostically reliable. (Clinicaltrials.gov identifier NCT01345617)
CF量子测试(CFQT)在之前的试点研究中显示出希望,但在一个补丁批次中存在更大的不准确性。在初步研究之后,制造商改变了他们的制造程序。既往诊断为CF的受试者或因临床原因需要进行汗液试验的受试者被邀请进行CFQT研究试验和常规汗液试验(Macroduct®;通过ChloroChek®收集和氯分析;chloridometer)。招募先前诊断为CF (n= 41)和CRMS (cftr相关代谢综合征)/CFSPID(囊性纤维化筛查阳性不确定诊断)(n= 3)患者和临床适应症需要汗液试验的患者(n=22)进行双侧CFQT和Macroduct®;同一天进行的测试。每个检验的成对数据绘制成相关图、偏倚图和Bland Altman图。计算两个试验的四肢变异系数(CV)和QNS率。与Macroduct®相比,CFQT组左右肢体间的CV(9.5%)更大;(4.8%)。两种检测的QNS(数量不充分)率具有可比性(CFQT: 6.8%;Macroduct®;:6.0%)。CFQT结果有较大的不精确性。两种检测的诊断一致性为100%阳性一致性(95% CI: 90-100%)、100%阴性一致性(95% CI: 80-100%)、67%中间一致性(95% CI: 30%-80%)和92%总体一致性(95% CI: 80-100%)。这项随访研究表明,CFQT在分析和诊断上都不可靠。(Clinicaltrials.gov识别码NCT01345617)
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引用次数: 2
Biochemical and Culture-Based Approaches to Identification in the Diagnostic Microbiology Laboratory 生化和基于培养的方法鉴定诊断微生物实验室
Pub Date : 2020-01-21 DOI: 10.29074/ascls.119.001875
S. Altheide
The late 1800s through the early 1900s saw the rapid development of growth media containing various substrates, i.e. carbohydrates, to identify and differentiate microbes isolated from clinical specimens. However, during the 1950s, an evolution of diagnostic services occurred created by a growing population with access to health insurance and the subsequent requirement for quality healthcare. The utilization of miniaturized, multi-test kits provided the first significant advancement of the biochemical, growth-based approach needed to handle the increased demand for clinical services. These testing kits provided reductions in labor and material costs associated with making, maintaining, inoculating, and reading tubed and plated media, while also reducing the time required to identify microbial isolates. The trend to improve laboratory efficiency and quality continued with the incorporation of automation and computers throughout the 1970s. Automated systems greatly increased the testing capacity of laboratories by allowing the simultaneous determination of identification and antimicrobial susceptibilities from one inoculum, and by further reducing the time to identification to hours instead of days. Within just the last 10-15 years, development and integration of a new growth-based approach for identification has occurred in the form of matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). The mass spectrometric approach provides the lowest cost per analysis and fastest time to identification after isolation of any current technique available in the microbiology laboratory. As healthcare costs and demand continue to increase, and more hospitals look to consolidate laboratories, fully automated facilities incorporating mass spectrometry for identification, along with molecular methods, will become commonplace.
19世纪末到20世纪初,含有各种底物(如碳水化合物)的生长培养基迅速发展,用于鉴定和区分从临床标本中分离出来的微生物。然而,在20世纪50年代,由于越来越多的人口有机会获得医疗保险以及随后对高质量医疗保健的需求,诊断服务发生了演变。小型化、多检测试剂盒的使用为生化、生长为基础的方法提供了第一个重大进步,以应对临床服务日益增长的需求。这些检测试剂盒减少了与制作,维护,接种和读取管和镀介质相关的人工和材料成本,同时也减少了鉴定微生物分离物所需的时间。在整个20世纪70年代,随着自动化和计算机的结合,提高实验室效率和质量的趋势继续下去。自动化系统通过允许同时测定一次接种的鉴定和抗菌药物敏感性,并进一步将鉴定时间缩短到几小时而不是几天,大大提高了实验室的检测能力。在过去的10-15年中,以基质辅助激光解吸电离飞行时间质谱(MALDI-TOF MS)的形式发展和整合了一种新的基于增长的鉴定方法。质谱方法提供了最低的每次分析成本和最快的时间来鉴定分离后的任何现有技术在微生物实验室中可用。随着医疗成本和需求的不断增加,以及越来越多的医院希望整合实验室,采用质谱法进行鉴定的全自动设备以及分子方法将变得普遍。
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引用次数: 5
期刊
American Society for Clinical Laboratory Science
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