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Microbiology laboratory automation

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https://www.readbyqxmd.com/read/28892765/the-performance-of-luminex-aries-%C3%A2-flu-a-b-rsv-and-cepheid-xpert-%C3%A2-flu-rsv-xc-for-the-detection-of-influenza-a-influenza-b-and-respiratory-syncytial-virus-in-prospective-patient-samples
#1
Phillip McMullen, Sue Boonlayangoor, Angella Charnot-Katsikas, Kathleen G Beavis, Vera Tesic
BACKGROUND: The demand for rapid, accurate viral testing has increased the number of assays available for the detection of viral pathogens. One of the newest FDA cleared platforms is the Luminex ARIES(®) Flu A/B & RSV, which is a fully automated, real-time PCR-based assay used for detection of influenza A, influenza B, and respiratory syncytial virus (RSV). OBJECTIVES: We sought to compare the performance of Luminex ARIES(®) Flu A/B & RSV assay to the Cepheid Xpert(®) Flu/RSV XC assay for rapid Flu and RSV testing...
September 5, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28885919/diagnostics-in-a-forward-deployed-setting
#2
Brett Swierczewski, Mark Simons
Current diagnostic methods for enteric pathogens include conventional/traditional microbiology, microscopy, enzyme immunoassay, automated identification platforms, and molecular methods. The choice of diagnostic test in the forward deployed military setting often depends on turnaround time, potential etiologic agents, costs, and laboratory capabilities. The military operational environment presents many challenges that impact the practicality and performance of even robust diagnostic platforms. With recent developments in diagnostic platforms and availability of high-performance multiplex molecular methods to pair with traditional culture and antibiotic susceptibility tests, there are more opportunities to gather information on the etiologic causes and clinical impacts of traveler's diarrhea, both in civilians and in deployed military populations...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28869004/performance-assessment-of-urine-flow-cytometry-ufc-to-screen-urines-to-reflex-to-culture-in-immunocompetent-and-immunosuppressed-hosts
#3
Aleksandra Stefanovic, Diane Roscoe, Romali Ranasinghe, Titus Wong, Elizabeth Bryce, Charlene Porter, Adelina Lim, Jennifer Grant, Karen Ng, Morris Pudek
PURPOSE: Urine flow cytometry (UFC) is an automated method to quantify bacterial and white blood cell (WBC) counts. We aimed to determine whether a threshold for these parameters can be set to use UFC as a sensitive screen to predict which urine samples will subsequently grow in culture. METHODOLOGY: Urines submitted to our microbiology laboratory at a tertiary care centre from 22 July 2015-17 February 2016 underwent UFC (Sysmex UF-1000i) analysis, regular urinalysis and urine culture...
September 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28844384/implementation-and-evaluation-of-an-automated-surveillance-system-to-detect-hospital-outbreak
#4
Anna Stachel, Gabriela Pinto, John Stelling, Yi Fulmer, Bo Shopsin, Kenneth Inglima, Michael Phillips
BACKGROUND: The timely identification of a cluster is a critical requirement for infection prevention and control (IPC) departments because these events may represent transmission of pathogens within the health care setting. Given the issues with manual review of hospital infections, a surveillance system to detect clusters in health care settings must use automated data capture, validated statistical methods, and include all significant pathogens, antimicrobial susceptibility patterns, patient care locations, and health care teams...
August 22, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28840987/multicenter-evaluation-of-an-image-analysis-device-apas-comparison-between-digital-image-and-traditional-plate-reading-using-urine-cultures
#5
John Glasson, Rhys Hill, Michael Summerford, Dianne Olden, Fotula Papadopoulos, Stephen Young, Steven Giglio
BACKGROUND: The application of image analysis technologies for the interpretation of microbiological cultures is evolving rapidly. The primary aim of this study was to establish whether the image analysis system named Automated Plate Assessment System (APAS; LBT Innovations Ltd., Australia) could be applied to screen urine cultures. A secondary aim was to evaluate differences between traditional plate reading (TPR) and the reading of cultures from images, or digital plate reading (DPR)...
November 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28837780/development-of-mast-a-microscopy-based-antimicrobial-susceptibility-testing-platform
#6
Kenneth P Smith, David L Richmond, Thea Brennan-Krohn, Hunter L Elliott, James E Kirby
Antibiotic resistance is compromising our ability to treat bacterial infections. Clinical microbiology laboratories guide appropriate treatment through antimicrobial susceptibility testing (AST) of patient bacterial isolates. However, increasingly, pathogens are developing resistance to a broad range of antimicrobials, requiring AST of alternative agents for which no commercially available testing methods are available. Therefore, there exists a significant AST testing gap in which current methodologies cannot adequately address the need for rapid results in the face of unpredictable susceptibility profiles...
August 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/28700901/hyperspectral-image-analysis-for-rapid-and-accurate-discrimination-of-bacterial-infections-a-benchmark-study
#7
Simone Arrigoni, Giovanni Turra, Alberto Signoroni
With the rapid diffusion of Full Laboratory Automation systems, Clinical Microbiology is currently experiencing a new digital revolution. The ability to capture and process large amounts of visual data from microbiological specimen processing enables the definition of completely new objectives. These include the direct identification of pathogens growing on culturing plates, with expected improvements in rapid definition of the right treatment for patients affected by bacterial infections. In this framework, the synergies between light spectroscopy and image analysis, offered by hyperspectral imaging, are of prominent interest...
September 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28689506/description-and-validation-of-a-new-automated-surveillance-system-for-clostridium-difficile-in-denmark
#8
M Chaine, S Gubbels, M Voldstedlund, B Kristensen, J Nielsen, L P Andersen, S Ellermann-Eriksen, J Engberg, A Holm, B Olesen, H C Schønheyder, C Østergaard, S Ethelberg, K Mølbak
The surveillance of Clostridium difficile (CD) in Denmark consists of laboratory based data from Departments of Clinical Microbiology (DCMs) sent to the National Registry of Enteric Pathogens (NREP). We validated a new surveillance system for CD based on the Danish Microbiology Database (MiBa). MiBa automatically collects microbiological test results from all Danish DCMs. We built an algorithm to identify positive test results for CD recorded in MiBa. A CD case was defined as a person with a positive culture for CD or PCR detection of toxin A and/or B and/or binary toxin...
September 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28638468/current-and-emerging-techniques-for-antibiotic-susceptibility-tests
#9
REVIEW
Karan Syal, Manni Mo, Hui Yu, Rafael Iriya, Wenwen Jing, Sui Guodong, Shaopeng Wang, Thomas E Grys, Shelley E Haydel, Nongjian Tao
Infectious diseases caused by bacterial pathogens are a worldwide burden. Serious bacterial infection-related complications, such as sepsis, affect over a million people every year with mortality rates ranging from 30% to 50%. Crucial clinical microbiology laboratory responsibilities associated with patient management and treatment include isolating and identifying the causative bacterium and performing antibiotic susceptibility tests (ASTs), which are labor-intensive, complex, imprecise, and slow (taking days, depending on the growth rate of the pathogen)...
2017: Theranostics
https://www.readbyqxmd.com/read/28566082/-femoral-hemodialysis-catheter-related-bacteremia-due-to-globicatella-sanguinis-challenges-in-species-identification
#10
Elif Aktaş, Nafia Canan Gürsoy, Tamer Sakacı, Yener Koç, Aziz Ahmad Hamidi, Emin Bulut, Duygu Erdemir, Barış Otlu
In this case, catheter-related bacteremia due to Globicatella sanguinis in a 43 years old female patient undergoing hemodialysis with the diagnosis of diabetic nephropathy was presented and the methods in the laboratory diagnosis of the rare opportunistic pathogen, Globicatella cins, were nvestigated. A set of peripheral blood cultures and simultaneous catheter culture was obtained from the patient in third of May 2016. Biochemical tests, Phoenix (Becton Dickinson, USA) and MicroScan (Beckman Coulter, USA) automated systems and matrix assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF MS) based Microflex MS (Bruker, Daltonics, Germany) and VITEK MS (database v2...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28566080/-molecular-epidemiology-of-human-mycobacterium-bovis-infection-in-aegean-region-turkey
#11
Cengiz Çavuşoğlu, Fethiye Ferda Yılmaz
Mycobacterium bovis, which has a broader host spectrum as opposed to Mycobacterium tuberculosis that generally causes disease in humans, mainly leads to chronic progressive pulmonary disease in a large number of domestic and wild mammals, particularly cattle. The term "zoonotic tuberculosis (TB)" is used to describe M.bovis infection in humans. "Zoonotic TB" can not be differentiated clinically, radiologically or pathologically from TB caused by M.tuberculosis. The aim of this study was to evaluate the role of M...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28455579/-new-microbiological-techniques
#12
REVIEW
S Schubert, A Wieser, G Bonkat
Microbiological diagnostic procedures have changed rapidly in recent years. This is especially true in the field of molecular diagnostics. Classical culture-based techniques are still the gold standard in many areas; however, they are already complemented by automated and also molecular techniques to guarantee faster and better quality results. The most commonly used techniques include real-time polymerase chain reaction (RT-PCR) based systems and nucleic acid hybridization. These procedures are used most powerfully from direct patient samples or in assays to detect the presence of nonculturable or fastidious organisms...
June 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28412378/project-management-importance-for-diagnostic-laboratories
#13
REVIEW
A Croxatto, G Greub
BACKGROUND: The need for diagnostic laboratories to improve both quality and productivity alongside personnel shortages incite laboratory managers to constantly optimize laboratory workflows, organization, and technology. These continuous modifications of the laboratories should be conducted using efficient project and change management approaches to maximize the opportunities for successful completion of the project. AIM: This review aims at presenting a general overview of project management with an emphasis on selected critical aspects...
July 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28397472/comparison-of-novel-blood-culture-system-dl-bt112tm-with-bact-alert-3dtm-by-using-clinical-samples
#14
COMPARATIVE STUDY
Mustafa Altindis, Tayfur Demiray, Mehmet Koroglu, Umit Kilic, Aybala Neslihan Alagoz, Aziz Ogutlu, Oguz Karabay
BACKGROUND: Blood cultures are the main diagnostic laboratory tool to detect bloodstream infections. Many clinical microbiology laboratories utilize automated blood culture systems to isolate infectious agents from blood samples. The diagnostic performance and time-to-detection values of the novel automated blood culture system, DLBt112TM (DL), was compared with BacT/Alert 3DTM (B3D) in this prospective comparative study with clinical samples. METHODS: A total of 356 blood culture sets (178 sets for each system) were evaluated over a 6-month period in a university hospital...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28391814/antibiogramj-a-tool-for-analysing-images-from-disk-diffusion-tests
#15
C A Alonso, C Domínguez, J Heras, E Mata, V Pascual, C Torres, M Zarazaga
BACKGROUND AND OBJECTIVES: Disk diffusion testing, known as antibiogram, is widely applied in microbiology to determine the antimicrobial susceptibility of microorganisms. The measurement of the diameter of the zone of growth inhibition of microorganisms around the antimicrobial disks in the antibiogram is frequently performed manually by specialists using a ruler. This is a time-consuming and error-prone task that might be simplified using automated or semi-automated inhibition zone readers...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28366154/-evaluation-of-mycobacterial-microscopy-and-culture-results-of-sureyyapasa-chest-diseases-and-chest-surgery-training-and-research-hospital-a-3-year-analysis
#16
Elçin Akduman Alaşehir, Ahmet Balıkçı, Mualla Partal, Gülay Çatmabacak, Görkem Yaman
Introduction: Effective diagnosis of tuberculosis is of great importance for transmission control and treatment success. The purpose of this study is to evaluate microscopic examination results of Ehrlich-Ziehl Neelsen (EZN) and Auramine-Rhodamine staining methods and automated BACTEC MGIT 960™ system and Löwenstein-Jensen (L-J) culture results of various clinical samples in the light of recent data from the world and Turkey. Materials and Methods: Specimens that were sent from various clinics to Sureyyapasa Chest Diseases and Chest Surgery Training and Research Hospital Microbiology Laboratory from January 2012 to December 2015 were evaluated retrospectively...
September 2016: Tüberküloz Ve Toraks
https://www.readbyqxmd.com/read/28322712/implementation-and-initial-analysis-of-a-laboratory-based-weekly-biosurveillance-system-provence-alpes-c%C3%A3-te-d-azur-france
#17
Michael Huart, Gabriel Bedubourg, Cédric Abat, Philippe Colson, Jean Marc Rolain, Hervé Chaudet, Pierre Edouard Fournier, Didier Raoult, Xavier Deparis
We describe the implementation of an automated infectious disease surveillance system that uses data collected from 210 microbiologic laboratories throughout the Provence-Alpes-Côte d'Azur region in France. Each week, these facilities report bacterial species that have been isolated from patients in their area. An alarm is triggered whenever the case count for a bacterial species infection exceeds 2 SDs of the historical mean for that species at the participating laboratory. At its inception in July 2013, the system monitored 611 bacterial species...
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28274291/an-audit-of-cryptosporidium-and-giardia-detection-in-scottish-national-health-service-diagnostic-microbiology-laboratories
#18
C L Alexander, S Currie, K Pollock, A Smith-Palmer, B L Jones
Giardia duodenalis and Cryptosporidium species are protozoan parasites capable of causing gastrointestinal disease in humans and animals through the ingestion of infective faeces. Whereas Cryptosporidium species can be acquired locally or through foreign travel, there is the mis-conception that giardiasis is considered to be largely travel-associated, which results in differences in laboratory testing algorithms. In order to determine the level of variation in testing criteria and detection methods between diagnostic laboratories for both pathogens across Scotland, an audit was performed...
June 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28271567/the-welsh-blood-service-70-years-of-continuous-change
#19
REVIEW
G D Poole
The National Blood Transfusion Service (NBTS) in England and Wales was established as a single entity in 1946 and operated as such for almost half a century. During those 50 years, the blood service in Wales, as in the rest of the UK, saw many technological and operational changes. The automation of donation testing, the introduction of successive layers of microbiological screening, the creation of the Tissue Typing Laboratory (later renamed the Welsh Transplantation and Immunogenetics Laboratory) and the development of information technology brought - over a relatively long period - highly significant improvements to an organisation that had begun life as an Emergency Medical Service...
March 8, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28214393/flow-cytometric-bacterial-cell-counts-challenge-conventional-heterotrophic-plate-counts-for-routine-microbiological-drinking-water-monitoring
#20
REVIEW
S Van Nevel, S Koetzsch, C R Proctor, M D Besmer, E I Prest, J S Vrouwenvelder, A Knezev, N Boon, F Hammes
Drinking water utilities and researchers continue to rely on the century-old heterotrophic plate counts (HPC) method for routine assessment of general microbiological water quality. Bacterial cell counting with flow cytometry (FCM) is one of a number of alternative methods that challenge this status quo and provide an opportunity for improved water quality monitoring. After more than a decade of application in drinking water research, FCM methodology is optimised and established for routine application, supported by a considerable amount of data from multiple full-scale studies...
April 15, 2017: Water Research
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