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Thulin IVL, Jordalen SMF, Lekven OC, Krishnapillai J, Steiro OT, Collinson P, Apple F, Cullen L, Norekvål TM, Wisløff T, Vikenes K, Omland T, Bjørneklett RO, Aakre KM. Aiming toWards Evidence baSed inTerpretation of Cardiac biOmarkers in patients pResenting with chest pain using Point of Care Testing (WESTCOR-POC): study design. SCAND CARDIOVASC J 2023; 57:2272585. [PMID: 37905548 DOI: 10.1080/14017431.2023.2272585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/15/2023] [Indexed: 11/02/2023]
Abstract
OBJECTIVES Patients presenting with symptoms suggestive of acute coronary syndrome (ACS) contribute to a high workload and overcrowding in the Emergency Department (ED). Accelerated diagnostic protocols for non-ST-elevation myocardial infarction have proved challenging to implement. One obstacle is the turnaround time for analyzing high-sensitivity cardiac troponin (hs-cTn). In the WESTCOR-POC study (Clinical Trials number NCT05354804) we aim to evaluate safety and efficiency of a 0/1 h hs-cTn algorithm utilizing a hs-cTnI point of care (POC) instrument in comparison to central laboratory hs-cTnT measurements. DESIGN This is a prospective single-center randomized clinical trial aiming to include 1500 patients admitted to the ED with symptoms suggestive of ACS. Patients will receive standard investigations following the European Society of Cardiology 0/1h protocols for centralized hs-cTnT measurements or the intervention using a 0/1h POC hs-cTnI algorithm. Primary end-points are 1) Safety; death, myocardial infarction or acute revascularization within 30 days 2) Efficiency; length of stay in the ED, 3) Cost- effectiveness; total episode cost, 4) Patient satisfaction, 5) Patient symptom burden and 6) Patients quality of life. Secondary outcomes are 12-months death, myocardial infarction or acute revascularization, percentage discharged after 3 and 6 h, total length of hospital stay and all costs related to hospital contact within 12 months. CONCLUSION Results from this study may facilitate implementation of POC hs-cTn testing assays and accelerated diagnostic protocols in EDs, and may serve as a valuable resource for guiding future investigations for the use of POC high sensitivity troponin assays in outpatient clinics and prehospital settings.
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Affiliation(s)
| | | | - Ole Christian Lekven
- Emergency Care Clinic, Haukeland University Hospital, Bergen, Norway
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Jeyaseelan Krishnapillai
- Emergency Care Clinic, Haukeland University Hospital, Bergen, Norway
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Ole Thomas Steiro
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Paul Collinson
- Departments of Clinical Blood Sciences and Cardiology, St George's University Hospitals NHS Foundation Trust, London, UK
- St George's University of London, London, UK
| | - Fred Apple
- Department of Laboratory Medicine and Pathology, Hennepin Healthcare/HCMC, Minneapolis, MN, USA
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Louise Cullen
- Department of Emergency Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
- School of Medicine, University of Queensland, Brisbane, Australia
- Faculty of Health, Queensland University of Technology, Brisbane, Australia
| | - Tone M Norekvål
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Torbjørn Wisløff
- Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
| | - Kjell Vikenes
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Rune O Bjørneklett
- Emergency Care Clinic, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Kristin Moberg Aakre
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
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2
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Gou Q, Liang L, Liu D, Jia J, Dong M, Chen H, Shou X. Clinical performance of 0/1 h cardiac troponin algorithm for diagnosing non-ST-segment elevation myocardial infarction in an emergency setting. Am J Emerg Med 2023; 71:139-143. [PMID: 37392513 DOI: 10.1016/j.ajem.2023.06.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/12/2023] [Accepted: 06/17/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Non-ST-segment elevation myocardial infarction (NSTEMI) is a common form of acute myocardial infarction and rapid and accurate diagnosis is crucial for timely treatment. Current guidelines recommend using high-sensitivity cardiac troponin (hs-cTn) assays to determine circulating cTnI or cTnT levels. While the accuracy of the 0 h/1 h algorithm for diagnosing NSTEMI in different regions and patient populations remains controversial. Additionally, point-of-care testing (POCT) cTn assays have the potential to provide troponin readings to physicians within 15 min, but their accuracy in diagnosing NSTEMI in the emergency department (ED) requires further investigation. METHODS A single-center prospective observational cohort study was conducted at Shaanxi Provincial People's Hospital to assess the analytical and diagnostic performance of the laboratory-based Roche Modular E170 hs-cTnT using the 0 h/1 h algorithm with Radiometer AQT90-flex POCT cTnT assay in undifferentiated chest pain patients presenting to the ED. Whole-blood samples were collected and hs-cTnT and POCT cTnI were measured simultaneously at baseline and after 1 h. RESULTS The study results showed that the POCT cTnT assay using the 0 h/1 h algorithm had comparable diagnostic accuracy to the laboratory-based Roche Modular E170 hs-cTnT assay in diagnosing NSTEMI in patients with chest pain. CONCLUSION The laboratory-based Roche Modular E170 hs-cTnT using the 0 h/1 h algorithm is reliable and accurate method for diagnosing NSTEMI in undifferentiated chest pain patients presenting to the ED. POCT cTnT assay has comparable diagnostic accuracy to the hs-cTnT assay and its rapid turnaround time makes it a valuable tool in expediting the diagnostic workup of chest pain patients.
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Affiliation(s)
- Qiling Gou
- Department of Cardiovascular Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China
| | - Linyuan Liang
- Department of Cardiovascular Medicine, Xi'an international medical center hospital, Xi'an 710032, Shaanxi, China
| | - Danping Liu
- Department of Emergency Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China
| | - Jia Jia
- Department of Emergency Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China
| | - Mengya Dong
- Department of Cardiovascular Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China
| | - Haichao Chen
- Department of Cardiovascular Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China.
| | - Xiling Shou
- Department of Cardiovascular Medicine, Shaanxi Provincial People's Hospital, Xi'an 710032, Shaanxi, China.
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3
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Collinson P, Aakre KM, Saenger A, Body R, Hammarsten O, Jaffe AS, Kavsak P, Omland T, Ordonez-Lianos J, Karon B, Apple FS. Cardiac troponin measurement at the point of care: educational recommendations on analytical and clinical aspects by the IFCC Committee on Clinical Applications of Cardiac Bio-Markers (IFCC C-CB). Clin Chem Lab Med 2023; 61:989-998. [PMID: 36637984 DOI: 10.1515/cclm-2022-1270] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/14/2023]
Abstract
The International Federation of Clinical Chemistry and Laboarator Medicine (IFCC) Committee on Clinical Applications of Cardiac Bio-Markers (C-CB) has provided evidence-based educational resources to aid and improve the understanding of important analytical and clinical aspects of cardiac biomarkers. The present IFCC C-CB educational report focuses on recommendations for appropriate use, analytical performance, and gaps in clinical studies related to the use of cardiac troponin (cTn) by point of care (POC) measurement, often referred to as a point of care testing (POCT). The use of high-sensitivity (hs)-cTn POC devices in accelerated diagnostic protocols used in emergency departments or outpatient clinics investigating acute coronary syndrome has the potential for improved efficacy, reduction of length of stay and reduced costs in the health care system. POCT workflow integration includes location of the instrument, assignment of collection and testing responsibility to (non-lab) staff, instrument maintenance, in-service and recurrent training, quality control, proficiency assessments, discrepant result trapping, and troubleshooting and inventory management.
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Affiliation(s)
- Paul Collinson
- Departments of Clinical Blood Sciences and Cardiology, St George's University Hospitals NHS Foundation Trust, London, UK.,St George's University of London, London, UK
| | - Kristin M Aakre
- Department of Medical Biochemistry and Pharmacology and Department of Heart Disease, Haukeland University Hospital, Bergen, Norway.,Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Amy Saenger
- Department of Laboratory Medicine and Pathology, Hennepin Healthcare/HCMC, Minneapolis, MN, USA.,Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Rick Body
- Emergency Department, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Division of Cardiovascular Sciences, The University of Manchester, Manchester, UK.,Healthcare Sciences Department, Manchester Metropolitan University, Manchester, UK
| | - Ole Hammarsten
- Department of Clinical Chemistry and Transfusion Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Allan S Jaffe
- Departments of Laboratory Medicine and Pathology and Cardiology, Mayo Clinic, Rochester, MN, USA
| | - Pete Kavsak
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Jordi Ordonez-Lianos
- Servicio de Bioquímica Clínica, Institut d'Investigacions Biomèdiques Sant Pau, Barcelona, Spain.,Departamento de Bioquímica y Biología Molecular, Universidad Autònoma de Barcelona, Barcelona, Spain
| | - Brad Karon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Fred S Apple
- Department of Laboratory Medicine and Pathology, Hennepin Healthcare/HCMC, Minneapolis, MN, USA.,Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
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Rajsic S, Breitkopf R, Bachler M, Treml B. Diagnostic Modalities in Critical Care: Point-of-Care Approach. Diagnostics (Basel) 2021; 11:diagnostics11122202. [PMID: 34943438 PMCID: PMC8700511 DOI: 10.3390/diagnostics11122202] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 02/07/2023] Open
Abstract
The concept of intensive care units (ICU) has existed for almost 70 years, with outstanding development progress in the last decades. Multidisciplinary care of critically ill patients has become an integral part of every modern health care system, ensuing improved care and reduced mortality. Early recognition of severe medical and surgical illnesses, advanced prehospital care and organized immediate care in trauma centres led to a rise of ICU patients. Due to the underlying disease and its need for complex mechanical support for monitoring and treatment, it is often necessary to facilitate bed-side diagnostics. Immediate diagnostics are essential for a successful treatment of life threatening conditions, early recognition of complications and good quality of care. Management of ICU patients is incomprehensible without continuous and sophisticated monitoring, bedside ultrasonography, diverse radiologic diagnostics, blood gas analysis, coagulation and blood management, laboratory and other point-of-care (POC) diagnostic modalities. Moreover, in the time of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, particular attention is given to the POC diagnostic techniques due to additional concerns related to the risk of infection transmission, patient and healthcare workers safety and potential adverse events due to patient relocation. This review summarizes the most actual information on possible diagnostic modalities in critical care, with a special focus on the importance of point-of-care approach in the laboratory monitoring and imaging procedures.
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Affiliation(s)
- Sasa Rajsic
- General and Surgical Intensive Care Unit, Department of Anaesthesiology and Critical Care Medicine, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.R.); (M.B.)
| | - Robert Breitkopf
- Transplant Surgical Intensive Care Unit, Department of Anaesthesiology and Critical Care Medicine, Medical University Innsbruck, 6020 Innsbruck, Austria;
| | - Mirjam Bachler
- General and Surgical Intensive Care Unit, Department of Anaesthesiology and Critical Care Medicine, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.R.); (M.B.)
| | - Benedikt Treml
- General and Surgical Intensive Care Unit, Department of Anaesthesiology and Critical Care Medicine, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.R.); (M.B.)
- Correspondence:
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5
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Alter DN. Point-of-Care Testing for the Emergency Department Patient: Quantity and Quality of the Available Evidence. Arch Pathol Lab Med 2021; 145:308-319. [PMID: 33635952 DOI: 10.5858/arpa.2020-0495-ra] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2020] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Point-of-care test (POCT) instruments produce lab results with rapid turnaround times. Based on that fact, emergency department (ED) POCT requests are predicated on the belief that rapid test turnaround times lead to improved care, typically a decreased ED length of stay (LOS). OBJECTIVE.— To compile the available peer-reviewed data regarding use of POCT in the ED with an emphasis on ED-LOS. DATA SOURCES.— An English-language PubMed search using the following free text terms: ("EMERGENCY" AND "POINT OF CARE") NOT ULTRASOUND as well as "RAPID INFECTIOUS DISEASE TESTING." In addition, the PubMed "similar articles" functionality was used to identify related articles that were not identified on the initial search. CONCLUSIONS.— Seventy-four references were identified that studied POCT ED use to determine if they resulted in significant changes in ED processes, especially ED-LOS. They were divided into 3 groups: viral-influenza (n = 24), viral-respiratory not otherwise specified (n = 8), and nonviral (n = 42). The nonviral group was further divided into the following groups: chemistry, cardiac, bacterial/strep, C-reactive protein, D-dimer, drugs of abuse, lactate, and pregnancy. Across all groups there was a trend toward a significantly decreased ED-LOS; however, a number of studies showed no change, and a third group was not assessed for ED-LOS. For POCT to improve ED-LOS it has to be integrated into existing ED processes such that a rapid test result will allow the patient to have a shorter LOS, whether it is to discharge or admission.
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Affiliation(s)
- David N Alter
- From the Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia
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6
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Apple FS, Fantz CR, Collinson PO. Implementation of High-Sensitivity and Point-of-Care Cardiac Troponin Assays into Practice: Some Different Thoughts. Clin Chem 2021; 67:70-78. [PMID: 33279984 PMCID: PMC7799201 DOI: 10.1093/clinchem/hvaa264] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/12/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND The primary role of the International Federation of Clinical Chemistry (IFCC) Committee on Clinical Application of Cardiac Bio-Markers (C-CB) is to provide educational materials about cardiac biomarker use, emphasizing high-sensitivity cardiac troponin assays. CONTENT This mini-review, regarding high-sensitivity cardiac and point-of-care troponin assays, addresses 1) new IFCC C-CB/AACC Academy laboratory practice recommendations; 2) new and updated concepts from the Fourth Universal Definition of Myocardial Infarction; 3) the role of point-of-care assays in practice and research; 4) regulatory challenges concerning point-of-care assays; e) testing in the COVID-19 world. SUMMARY Implementation of high-sensitivity cardiac troponin assays makes a difference now and into the future in clinical practice and research. Providing point-of-care high-sensitivity cardiac troponin assays and optimizing studies to allow clearance of these assays by regulatory agencies, in a timely fashion, may provide improved patient management and outcomes.
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Affiliation(s)
- Fred S Apple
- Department of Laboratory Medicine and Pathology, Hennepin County Medical Center of Hennepin Healthcare and University of Minnesota, Minneapolis, MN
| | - Corinne R Fantz
- Medical and Scientific Affairs - POC, Roche Diagnostics Corporation, Indianapolis, IN
| | - Paul O Collinson
- Department of Clinical Blood Sciences and Cardiology, St George's University Hospitals NHS Foundation Trust and St George’s University of London, London, UK
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7
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Collinson P. Cardiac biomarker measurement by point of care testing - Development, rationale, current state and future developments. Clin Chim Acta 2020; 508:234-239. [PMID: 32464138 DOI: 10.1016/j.cca.2020.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 11/28/2022]
Abstract
Cardiac biomarker measurements are integral to the diagnosis and management of patients presenting with breathlessness and chest pain. Measurement of B type natriuretic peptide either directly or of the N-terminal portion of the prohormone although possible by point of care testing (POCT) has largely become a laboratory test. Measurement of the cardiac troponins cardiac troponin T (cTnT) and cardiac troponin I (cTnI) can easily and accurately be performed by POCT. The situation has been complicated by the development of high sensitivity assays for cTnT and cTnI and the subsequent development of rapid rule out algorithms allowing patient categorisation and discharge on admission and 1 to 2 h following admission. This article reviews the development of POCT for cardiac biomarkers, the evidence base comparing POCT with central laboratory testing, its strengths and limitations, and how POCT fits into the world of high sensitivity troponin assays. It also discusses what evidence there is that POCT can form part of rapid decision-making strategies and how this applies in an era of algorithms based on and is derived from measurement of high sensitivity troponin in the central laboratory.
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Affiliation(s)
- Paul Collinson
- Departments of Clinical Blood Sciences and Cardiology, St George's University Hospitals NHS Foundation Trust and St George's University of London, Cranmer Terrace, London SW17 0QT, UK.
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8
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Abstract
Abstract
The measurement of the cardiac troponins (cTn), cardiac troponin T (cTnT) and cardiac troponin I (cTnI) are integral to the management of patients with suspected acute coronary syndromes (ACS). Patients without clear electrocardiographic evidence of myocardial infarction require measurement of cTnT or cTnI. It therefore follows that a rapid turnaround time (TAT) combined with the immediacy of results return which is achieved by point-of-care testing (POCT) offers a substantial clinical benefit. Rapid results return plus immediate decision-making should translate into improved patient flow and improved therapeutic decision-making. The development of high sensitivity troponin assays offer significant clinical advantages. Diagnostic algorithms have been devised utilising very low cut-offs at first presentation and rapid sequential measurements based on admission and 3 h sampling, most recently with admission and 1 h sampling. Such troponin algorithms would be even more ideally suited to point-of-care testing as the TAT achieved by the diagnostic laboratory of typically 60 min corresponds to the sampling interval required by the clinician using the algorithm. However, the limits of detection and analytical imprecision required to utilise these algorithms is not yet met by any easy-to-use POCT systems.
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9
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Damhorst GL, Tyburski EA, Brand O, Martin GS, Lam WA. Diagnosis of acute serious illness: the role of point-of-care technologies. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019; 11:22-34. [PMID: 34079919 PMCID: PMC8168915 DOI: 10.1016/j.cobme.2019.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Access to rapid diagnostic information is a core value of point-of-care (POC) technology. This is particularly relevant in acute, emergency, and critical care settings where diagnostic speed and precision directly guide the management of patients with potentially life-threatening conditions. Many POC diagnostics described in the literature, however, remain largely unproven and have yet to enter the market entirely. Only a few have traversed the translation and commercialization pathways to reach widespread clinical adoption. Moreover, even technologies that have successfully translated to the patient bedside still frequently lack an evidence base showing improvement of clinical outcomes. In this review, we present aspects of diagnosis of acute life-threatening diseases and describe the potential role of POC technologies, emphasizing the available evidence of clinical outcomes. Finally, we discuss what is needed to identify clinically meaningful new technologies and translate them toward the long-promised goal of better health through rapid POC diagnosis.
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Affiliation(s)
| | - Erika A Tyburski
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, USA
- The Atlanta Center for Microsystems-Engineered Point-of-Care Technologies, Atlanta, GA, USA
- Sanguina, LLC, Peachtree Corners, GA, USA
| | - Oliver Brand
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, USA
- The Atlanta Center for Microsystems-Engineered Point-of-Care Technologies, Atlanta, GA, USA
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Greg S Martin
- The Atlanta Center for Microsystems-Engineered Point-of-Care Technologies, Atlanta, GA, USA
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA, USA
- Georgia Clinical and Translational Science Alliance, Atlanta, GA, USA
| | - Wilbur A Lam
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, USA
- The Atlanta Center for Microsystems-Engineered Point-of-Care Technologies, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Department of Pediatrics, Division of Pediatric Hematology/Oncology, Aflac Cancer Center and Blood Disorders Center of Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA, USA
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10
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Regan B, Boyle F, O'Kennedy R, Collins D. Evaluation of Molecularly Imprinted Polymers for Point-of-Care Testing for Cardiovascular Disease. SENSORS (BASEL, SWITZERLAND) 2019; 19:E3485. [PMID: 31395843 PMCID: PMC6720456 DOI: 10.3390/s19163485] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 07/29/2019] [Accepted: 08/06/2019] [Indexed: 12/13/2022]
Abstract
Molecular imprinting is a rapidly growing area of interest involving the synthesis of artificial recognition elements that enable the separation of analyte from a sample matrix and its determination. Traditionally, this approach can be successfully applied to small analyte (<1.5 kDa) separation/ extraction, but, more recently it is finding utility in biomimetic sensors. These sensors consist of a recognition element and a transducer similar to their biosensor counterparts, however, the fundamental distinction is that biomimetic sensors employ an artificial recognition element. Molecularly imprinted polymers (MIPs) employed as the recognition elements in biomimetic sensors contain binding sites complementary in shape and functionality to their target analyte. Despite the growing interest in molecularly imprinting techniques, the commercial adoption of this technology is yet to be widely realised for blood sample analysis. This review aims to assess the applicability of this technology for the point-of-care testing (POCT) of cardiovascular disease-related biomarkers. More specifically, molecular imprinting is critically evaluated with respect to the detection of cardiac biomarkers indicative of acute coronary syndrome (ACS), such as the cardiac troponins (cTns). The challenges associated with the synthesis of MIPs for protein detection are outlined, in addition to enhancement techniques that ultimately improve the analytical performance of biomimetic sensors. The mechanism of detection employed to convert the analyte concentration into a measurable signal in biomimetic sensors will be discussed. Furthermore, the analytical performance of these sensors will be compared with biosensors and their potential implementation within clinical settings will be considered. In addition, the most suitable application of these sensors for cardiovascular assessment will be presented.
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Affiliation(s)
- Brian Regan
- School of Biotechnology, Dublin City University, Dublin 9, Ireland.
| | - Fiona Boyle
- School of Biotechnology, Dublin City University, Dublin 9, Ireland
| | - Richard O'Kennedy
- School of Biotechnology, Dublin City University, Dublin 9, Ireland
- Research Complex, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - David Collins
- School of Biotechnology, Dublin City University, Dublin 9, Ireland
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11
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Harder R, Wei K, Vaze V, Stahl JE. Simulation Analysis and Comparison of Point of Care Testing and Central Laboratory Testing. MDM Policy Pract 2019; 4:2381468319856306. [PMID: 31259251 PMCID: PMC6589980 DOI: 10.1177/2381468319856306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 04/23/2019] [Indexed: 11/17/2022] Open
Abstract
Background. In response to demand for fast and efficient clinical testing, the use of point-of-care testing (POCT) has become increasingly common in the United States. However, studies of POCT implementation have found that adopting POCT may not always be advantageous relative to centralized laboratory testing. Methods. We construct a simulation model of patient flow in an outpatient care setting to evaluate tradeoffs involved in POCT implementation across multiple dimensions, comparing measures of patient outcomes in varying clinical scenarios, testing regimes, and patient conditions. Results. We find that POCT can significantly reduce clinical time for patients, as compared to traditional testing regimes, in settings where clinic and central testing areas are far apart. However, as distance from clinic to central testing area decreased, POCT advantage over central laboratory testing also decreased, in terms of time in the clinical system and estimated subsequent productivity loss. For example, testing for pneumonia resulted in an estimated average of 27.80 (central lab) versus 15.50 (POCT) total lost productive hours in a rural scenario, and an average of 14.92 (central lab) versus 15.50 (POCT) hours in a hospital-based scenario. Conclusions. Our results show that POCT can effectively reduce the average time a patient spends in the system for varying condition profiles and clinical scenarios. However, the number of total lost productive hours, a more holistic measure, is greatly affected by testing quality, where POCT often is at a disadvantage. Thus, it is important to consider factors such as clinical setting, target condition, testing costs, and test quality when selecting appropriate testing regime.
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Affiliation(s)
- Reed Harder
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Keji Wei
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Vikrant Vaze
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - James E Stahl
- Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Lebanon, New Hampshire
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12
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Pecoraro V, Banfi G, Germagnoli L, Trenti T. A systematic evaluation of immunoassay point-of-care testing to define impact on patients' outcomes. Ann Clin Biochem 2017; 54:420-431. [PMID: 28135840 DOI: 10.1177/0004563217694377] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Point-of-care testing has been developed to provide rapid test results. Most published studies focus on analytical performance, neglecting its impact on patient outcomes. Objective To review the analytical performance and accuracy of point-of-care testing specifically planned for immunoassay and to evaluate the impact of faster results on patient management. Methods A search of electronic databases for studies reporting immunoassay results obtained in both point-of-care testing and central laboratory scenarios was performed. Data were extracted concerning the study details, and the methodological quality was assessed. The analytical characteristics and diagnostic accuracy of six points-of-care testing: troponin, procalcitonin, parathyroid hormone, brain natriuretic peptide, C-reactive protein and neutrophil gelatinase-associated lipocalin were evaluated. Results A total of 116 scientific papers were analysed. Studies measuring procalcitonin, parathyroid hormone and neutrophil gelatinase-associated lipocalin reported a limited impact on diagnostic decisions. Seven studies measuring C-reactive protein claimed a significant reduction of antibiotic prescription. Several authors evaluated brain natriuretic peptide or troponin reporting faster decision-making without any improvement in clinical outcome. Forty-four per cent of studies reported analytical data, showing satisfactory correlations between results obtained through point-of-care testing and central laboratory setting. Half of studies defined the diagnostic accuracy of point-of-care testing as acceptable for troponin (median sensitivity and specificity: 74% and 94%, respectively), brain natriuretic peptide (median sensitivity and specificity: 82% and 88%, respectively) and C-reactive protein (median sensitivity and specificity 85%). Conclusions Point-of-care testing immunoassay results seem to be reliable and accurate for troponin, brain natriuretic peptide and C-reactive protein. The satisfactory analytical performance, together with an excellent practicability, suggests that it could be a consistent tool in clinical practice, but data are lacking regarding the patient outcomes.
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Affiliation(s)
- Valentina Pecoraro
- 1 Department of Laboratory Medicine, Clinical Pathology-Toxicology, Ospedale Civile Sant'Agostino Estense, Modena, Italy.,2 Laboratory of Regulatory Policies, IRCCS - "Mario Negri", Institute of Pharmacological Research, Milan, Italy
| | - Giuseppe Banfi
- 3 Vita-Salute San Raffaele University, Milan, Italy.,4 I.R.C.C.S. Orthopedic Institute Galeazzi, Milan, Italy
| | | | - Tommaso Trenti
- 1 Department of Laboratory Medicine, Clinical Pathology-Toxicology, Ospedale Civile Sant'Agostino Estense, Modena, Italy
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Kankaanpää M, Raitakari M, Muukkonen L, Gustafsson S, Heitto M, Palomäki A, Suojanen K, Harjola VP. Use of point-of-care testing and early assessment model reduces length of stay for ambulatory patients in an emergency department. Scand J Trauma Resusc Emerg Med 2016; 24:125. [PMID: 27756354 PMCID: PMC5069884 DOI: 10.1186/s13049-016-0319-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 10/09/2016] [Indexed: 11/10/2022] Open
Abstract
Background To assess whether the use of point-of-care testing (POCT) and early assessment team (EAT) model shortens emergency department (ED) length of stay (LOS). Methods This prospective, observational study with comparison between three study periods was performed in three phases in a metropolitan ED with 57,000 annual visits. Data were collected from adult ambulatory patients who were discharged home. Phase 1 served as a control (n = 1559 in one month). In phase 2, a comprehensive POCT panel including complete blood count, sodium, potassium, glucose, C-reactive protein, creatinine, alkaline phosphatase, alanine aminotransferase, bilirubin, amylase, and D-dimer was launched (n = 1442 in one month). In phase 3 (n = 3356 in subsequent two months), POCT approach continued. In addition, the working process was changed by establishing an EAT consisting of an emergency medicine resident and a nurse. The team operated from 12 noon to 10 p.m. was. The primary outcome was LOS (hh:mm) in the ED. Waiting times for patients requiring laboratory testing were analysed also, including time from admission to laboratory blood sampling (A2S interval), time from blood sampling to results ready (S2R interval) and time from results to discharge (R2D interval). Results Median LOS of patients requiring laboratory tests in phase 1 was 3:51 (95 % confidence interval 03:38–04:04). During phase 2, introduction of POCT reduced median LOS by 29 min to 03:22 (03:12–03:31, p = 0.000). In phase 3, the EAT model reduced median LOS further by 17 min to 03:05 (02:59–03:12, p = 0.033). Altogether, the process was expedited by 46 min compared with the phase 1. Surprisingly, A2S interval was unaffected by the interventions among all patients needing laboratory testing. In comparison to phase 1, shortening of S2R interval was observed in phase 2 and 3, and that of R2D interval in all patients with laboratory assessments in phase 3. Discussion The present study included adult ambulatory patients and is the first one to examine the impact of comprehensive POC test panel, first alone and then with additional process change. As a result, LOS was reduced significantly for patients needing laboratory tests. Considerable shortening in LOS came from introduction of POCT, and EAT process decreased the LOS further. We used a comprehensive POC test panel in order to maximise the patient population benefiting from the positive impacts of POC on laboratory turnaround time and length of stay. In EAT, diverse setups exist, and these differences affect the interpretation of results. The process changes in phase 3 were done by rearranging work shifts and no extra resources were added. Regarding to staffing the process improvement was thus cost neutral. Conclusions The advantage of POCT alone compared with central laboratory seemed to lie in shorter waiting times for results and earlier discharge home. Moreover, POCT and EAT model shorten LOS additively compared with conventional processes. However, a longer time is seemingly needed to adopt a new working process in the ED, and to establish its full benefit.
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Affiliation(s)
- Meri Kankaanpää
- University of Helsinki, Helsinki, Finland. .,Department of Emergency Medicine and Services, Helsinki University Hospital, Helsinki, Finland.
| | - Maria Raitakari
- Department of Clinical Chemistry and Haematology, HUSLAB, Helsinki, Finland
| | - Leila Muukkonen
- Department of Clinical Chemistry and Haematology, HUSLAB, Helsinki, Finland
| | - Siv Gustafsson
- Department of Clinical Chemistry and Haematology, HUSLAB, Helsinki, Finland
| | - Merja Heitto
- University of Helsinki, Helsinki, Finland.,Department of Emergency Medicine and Services, Helsinki University Hospital, Helsinki, Finland
| | - Ari Palomäki
- University of Tampere, Kanta-Häme Central Hospital, Hämeenlinna, Finland
| | - Kimmo Suojanen
- University of Helsinki, Helsinki, Finland.,Department of Emergency Medicine and Services, Helsinki University Hospital, Helsinki, Finland
| | - Veli-Pekka Harjola
- University of Helsinki, Helsinki, Finland.,Department of Emergency Medicine and Services, Helsinki University Hospital, Helsinki, Finland
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Nikolaou N, Arntz H, Bellou A, Beygui F, Bossaert L, Cariou A. Das initiale Management des akuten Koronarsyndroms. Notf Rett Med 2015. [DOI: 10.1007/s10049-015-0084-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nikolaou NI, Arntz HR, Bellou A, Beygui F, Bossaert LL, Cariou A, Danchin N. European Resuscitation Council Guidelines for Resuscitation 2015 Section 8. Initial management of acute coronary syndromes. Resuscitation 2015; 95:264-77. [DOI: 10.1016/j.resuscitation.2015.07.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Central Laboratory Service and Point-of-Care Testing in Germany—From Conflicting Notions to Complementary Understandings. POINT OF CARE 2015. [DOI: 10.1097/poc.0000000000000043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Point-of-care testing (POCT) refers to any diagnostic test administered outside the central laboratory at or near the location of the patient. By performing the sample collection and data analysis steps in the same location POCT cuts down on transport and processing delays, resulting in the rapid feedback of test results to medical decision-makers. Over the past decades the availability and use of POCT have steadily increased in Europe and throughout the international community. However, concerns about overall utility and the reliability of benefits to patient care have impeded the growth of POCT in some areas. While there is no agreed-upon standard for how success should be judged, the increases in speed and mobility provided by POCT can lead to substantial advantages over traditional laboratory testing. When properly utilized, POCT has been shown to yield measurable improvements in patient care, workflow efficiency, and even provide significant financial benefits. However, important organizational and quality assurance challenges must be addressed with the implementation of POCT in any health care environment. To ensure maximal benefits it may be necessary to evaluate critically and restructure existing clinical pathways to capitalize better on the rapid test turnaround times provided by POCT.
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Affiliation(s)
- Anders Larsson
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | | | - Albert Huisman
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, The Netherlands
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Rooney KD, Schilling UM. Point-of-care testing in the overcrowded emergency department--can it make a difference? CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:692. [PMID: 25672600 PMCID: PMC4331380 DOI: 10.1186/s13054-014-0692-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Emergency departments (EDs) face several challenges in maintaining consistent quality care in the face of steadily increasing public demand. Improvements in the survival rate of critically ill patients in the ED are directly related to the advancement of early recognition and treatment. Frequent episodes of overcrowding and prolonged waiting times force EDs to operate beyond their capacity and threaten to impact upon patient care. The objectives of this review are as follows: (a) to establish overcrowding as a threat to patient outcomes, person-centered care, and public safety in the ED; (b) to describe scenarios in which point-of-care testing (POCT) has been found to ameliorate factors thought to contribute to overcrowding; and (c) to discuss how POCT can be used directly, and indirectly, to expedite patient care and improve outcomes. Various studies have shown that overcrowding in the ED has profound effects on operational efficiency and patient care. Several reports have quantified overcrowding in the ED and have described a relationship between heightened periods of overcrowding and delays in treatment, increased incidence of adverse events, and an even greater probability of mortality. In certain scenarios, POCT has been found to increase the number of patients discharged in a timely manner, expedite triage of urgent but non-emergency patients, and decrease delays to treatment initiation. This review concludes that POCT, when used effectively, may alleviate the negative impacts of overcrowding on the safety, effectiveness, and person-centeredness of care in the ED.
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Bidmead T, Goodacre S, Maheswaran R, O'Cathain A. Factors influencing unspecified chest pain admission rates in England. Emerg Med J 2014; 32:439-43. [DOI: 10.1136/emermed-2014-203678] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 05/23/2014] [Indexed: 11/03/2022]
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Franchin T, Faggiano F, Plebani M, Muraca M, De Vivo L, Derrico P, Ritrovato M. Adopting European Network for Health Technology Assessments (EunetHTA) core model for diagnostic technologies for improving the accuracy and appropriateness of blood gas analyzers' assessment. Clin Chem Lab Med 2014; 52:1569-77. [PMID: 24897399 DOI: 10.1515/cclm-2014-0087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/22/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND Point-of-care testing (POCT) is a successful methodology for meeting clinical expectations of rapid and accurate results. Scientific literature has moreover highlighted and confirmed the necessity of individuating the best technological solution, in accordance with clinical requirements and contextualized to the whole health organization, where it will be implemented. Health Technology Assessment (HTA) can assist in reaching an appropriate and contextualized decision on a health technology. The aim of this study is to adapt a HTA core model for improving the evaluation of a POCT technology: blood gas analyzers. METHODS The European Network for Health Technology Assessment (EUnetHTA) core model for diagnostic technologies was applied for evaluating globally marketed blood gas analyzers. Evaluation elements were defined according to available literature and validated using the Delphi method. RESULTS A HTA model of 71 issues, subdivided into 26 topics and 10 domains, was obtained by interviewing 11 healthcare experts over two rounds of Delphi questionnaires. Ten context parameters were identified in order to define the initial scenario from which the technology assessment was to begin. CONCLUSIONS The model presented offers a systematic and objective structure for the evaluation of blood gas analyzers, which may play a guidance role for healthcare operators approaching the evaluation of such technologies thus improving, in a contextualized fashion, the appropriateness of purchasing.
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Assessment of using fingerstick blood sample with i-STAT point-of-care device for cardiac troponin I assay. Am J Emerg Med 2013; 31:1236-9. [DOI: 10.1016/j.ajem.2013.04.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 04/23/2013] [Indexed: 11/19/2022] Open
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van der Laarse A, Cobbaert CM, Gorgels AP, Swenne CA. Will future troponin measurement overrule the ECG as the primary diagnostic tool in patients with acute coronary syndrome? J Electrocardiol 2013; 46:312-7. [DOI: 10.1016/j.jelectrocard.2013.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Indexed: 11/17/2022]
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Asha SE, Chan ACF, Walter E, Kelly PJ, Morton RL, Ajami A, Wilson RD, Honneyman D. Impact from point-of-care devices on emergency department patient processing times compared with central laboratory testing of blood samples: a randomised controlled trial and cost-effectiveness analysis. Emerg Med J 2013; 31:714-9. [PMID: 23748157 DOI: 10.1136/emermed-2013-202632] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine if time to disposition decisions for emergency department (ED) patients can be reduced when blood tests are processed using point-of-care (POC) devices and to conduct a cost-effectiveness analysis of POC compared with laboratory testing. METHODS This randomised trial enrolled adults suspected of an acute coronary syndrome or presenting with conditions considered to only require blood tests available by POC. Participants were randomised to have blood tests processed by POC or laboratory. Outcomes measured were time to disposition decision and ED length-of-stay (LOS). The cost-effectiveness analysis calculated the total and mean costs per ED presentation, as well as total and mean benefits in time saved to disposition decision. RESULTS There were 410 POC participants and 401 controls. The mean times to a disposition decision for POC versus controls were 3.24 and 3.50 h respectively, a difference of 7.6% (95% CI 0.4% to 14.3%, p=0.04), and 4.32 and 4.52 h respectively for ED LOS, a difference of 4.4% (95% CI -2.7% to 11.0%, p=0.21). Improved processing time was greatest for participants enrolled by senior staff with a reduction in time to disposition decision of 19.1% (95% CI 7.3% to 29.4%, p<0.01) and ED LOS of 15.6% (95% CI 4.9% to 25.2%, p=0.01). Mean pathology costs were $12 higher in the POC group (95% CI $7 to $18) and the incremental cost-effectiveness ratio was $113 per hour saved in time to disposition decision for POC compared with standard laboratory testing. CONCLUSIONS Small improvements in disposition decision time were achieved with POC testing for a moderate increase in cost. Greatest benefit may be achieved when POC is targeted to senior medical staff.
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Affiliation(s)
- Stephen Edward Asha
- Emergency Department, St George Hospital, Sydney, New South Wales, Australia Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Adam Chiu Fat Chan
- Emergency Department, St George Hospital, Sydney, New South Wales, Australia Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Elizabeth Walter
- Emergency Department, St George Hospital, Sydney, New South Wales, Australia
| | - Patrick J Kelly
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Rachael L Morton
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Allan Ajami
- Emergency Department, St George Hospital, Sydney, New South Wales, Australia
| | - Roger Denis Wilson
- Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia South Eastern Area Laboratory Services, NSW Health Pathology, Sydney, New South Wales, Australia
| | - Daniel Honneyman
- Emergency Department, St George Hospital, Sydney, New South Wales, Australia
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Chan CPY, Mak WC, Cheung KY, Sin KK, Yu CM, Rainer TH, Renneberg R. Evidence-based point-of-care diagnostics: current status and emerging technologies. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2013; 6:191-211. [PMID: 23527548 DOI: 10.1146/annurev-anchem-062012-092641] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Point-of-care (POC) diagnostics brings tests nearer to the site of patient care. The turnaround time is short, and minimal manual interference enables quick clinical management decisions. Growth in POC diagnostics is being continuously fueled by the global burden of cardiovascular and infectious diseases. Early diagnosis and rapid initiation of treatment are crucial in the management of such patients. This review provides the rationale for the use of POC tests in acute coronary syndrome, heart failure, human immunodeficiency virus, and tuberculosis. We also consider emerging technologies that are based on advanced nanomaterials and microfluidics, improved assay sensitivity, miniaturization in device design, reduced costs, and high-throughput multiplex detection, all of which may shape the future development of POC diagnostics.
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Affiliation(s)
- Cangel Pui Yee Chan
- Accident and Emergency Medicine Academic Unit, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR
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Bingisser R, Cairns C, Christ M, Hausfater P, Lindahl B, Mair J, Panteghini M, Price C, Venge P. Cardiac troponin: a critical review of the case for point-of-care testing in the ED. Am J Emerg Med 2012; 30:1639-49. [PMID: 22633720 DOI: 10.1016/j.ajem.2012.03.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 03/05/2012] [Indexed: 11/25/2022] Open
Abstract
The measurement of cardiac troponin concentrations in the blood is a key element in the evaluation of patients with suspected acute coronary syndromes, according to current guidelines, and contributes importantly to the ruling in or ruling out of acute myocardial infarction. The introduction of point-of-care testing for cardiac troponin has the potential to reduce turnaround time for assay results, compared with central laboratory testing, optimizing resource use. Although, in general, many point-of-care cardiac troponin tests are less sensitive than cardiac troponin tests developed for central laboratory-automated analyzers, point-of-care systems have been used successfully within accelerated protocols for the reliable ruling out of acute coronary syndromes, without increasing subsequent readmission rates for this condition. The impact of shortened assay turnaround times with point-of-care technology on length of stay in the emergency department has been limited to date, with most randomized evaluations of this technology having demonstrated little or no reduction in this outcome parameter. Accordingly, the point-of-care approach has not been shown to be cost-effective relative to central laboratory testing. Modeling studies suggest, however, that reengineering overall procedures within the emergency department setting, to take full advantage of reduced therapeutic turnaround time, has the potential to improve the flow of patients through the emergency department, to shorten discharge times, and to reduce cost. To properly evaluate the potential contribution of point-of-care technology in the emergency department, including its cost-effectiveness, future evaluations of point-of-care platforms will need to be embedded completely within a local decision-making structure designed for its use.
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Mogensen CB, Borch A, Brandslund I. Point of care technology or standard laboratory service in an emergency department: is there a difference in time to action? A randomised trial. Scand J Trauma Resusc Emerg Med 2011; 19:49. [PMID: 21906396 PMCID: PMC3180400 DOI: 10.1186/1757-7241-19-49] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 09/10/2011] [Indexed: 12/13/2022] Open
Abstract
Background Emergency Departments (ED) have a high flow of patients and time is often crucial. New technologies for laboratory analysis have been developed, including Point of Care Technologies (POCT), which can reduce the transport time and time of analysis significantly compared with central laboratory services. However, the question is if the time to clinical action is also reduced if a decisive laboratory answer is available during the first contact between the patient and doctor. The present study addresses this question: Does a laboratory answer, provided by POCT to the doctor who first attends the patient on admission, change the time to clinical decision in commonly occurring diseases in an ED compared with the traditional service from a central laboratory? Methods We performed a randomised clinical trial with parallel design and allocation ratio 1:1. The eligibility Criteria were: All patients referred from General Practitioner or another referring doctor suspected for a deep venous thrombosis (DVT), acute coronary syndrome (ACS), acute appendicitis (AA) or acute infection (ABI). The outcome measure was the time spend from the blood sample was taken to a clinical decision was made. Results The study period took place in October--November 2009 and from February to April 2010. 239 patients were eligible for the study. There was no difference between the groups suspected for DVT, ACS and AA, but a significant reduction in time for the ABI group (p:0.009), where the median time to decision was reduced from 7 hours and 33 minutes to 4 hours and 38 minutes when POCT was used. Only in the confirmation of ABI the time to action was significantly shorter. Conclusions Fast laboratory answers by POCT in an ED reduce the time to clinical decision significantly for bacterial infections. We suggest further studies which include a sufficient number of patients on deep venous thrombosis, acute appendicitis and acute coronary syndrome.
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Arntz HR, Bossaert L, Danchin N, Nicolau N. Initiales Management des akuten Koronarsyndroms. Notf Rett Med 2010. [DOI: 10.1007/s10049-010-1371-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Arntz HR, Bossaert LL, Danchin N, Nikolaou NI. European Resuscitation Council Guidelines for Resuscitation 2010 Section 5. Initial management of acute coronary syndromes. Resuscitation 2010; 81:1353-63. [DOI: 10.1016/j.resuscitation.2010.08.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Emergency Cardiac Biomarkers and Point-of-Care Testing: Optimizing Acute Coronary Syndrome Care Using Small-World Networks In Rural Settings. POINT OF CARE 2010; 9:53-64. [PMID: 20577572 DOI: 10.1097/poc.0b013e3181d9d45c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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A point-of-care chemistry test for reduction of turnaround and clinical decision time. Am J Emerg Med 2010; 29:489-95. [PMID: 20825817 DOI: 10.1016/j.ajem.2009.11.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 11/24/2009] [Accepted: 11/25/2009] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Our study compared clinical decision time between patients managed with a point-of-care chemistry test (POCT) and patients managed with the traditional central laboratory test (CLT). BASIC PROCEDURE This was a randomized controlled multicenter trial in the emergency departments (EDs) of 5 academic teaching hospitals. We randomly assigned patients to POCT or CLT stratified by the Emergency Severity Index. A POCT chemistry analyzer (Piccolo; Abaxis, Inc, Union City, Calif), which is able to test liver panel, renal panel, pancreas enzymes, lipid panel, electrolytes, and blood gases, was set up in each ED. Primary and secondary end point was turnaround time and door-to-clinical-decision time. MAIN FINDINGS The total 2323 patients were randomly assigned to the POCT group (n = 1167) or to the CLT group (n = 1156). All of the basic characteristics were similar in the 2 groups. The turnaround time (median, interquartile range [IQR]) of the POCT group was shorter than that of the CLT group (14, 12-19 versus 55, 45-69 minutes; P < .0001). The median (IQR) door-to-clinical-decision time was also shorter in the POCT compared with the CLT group (46, 33-61 versus 86, 68-107 minutes; P < .0001). The proportion of patients who had new decisions within 60 minutes was 72.8% for the POCT group and 12.5% for the CLT group (P < .0001). CONCLUSIONS A POCT chemistry analyzer in the ED shortens the test turnaround and ED clinical decision times compared with CLT.
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Takakuwa KM, Ou FS, Peterson ED, Pollack CV, Peacock WF, Hoekstra JW, Ohman EM, Gibler WB, Blomkalns AL, Roe MT. The usage patterns of cardiac bedside markers employing point-of-care testing for troponin in non-ST-segment elevation acute coronary syndrome: results from CRUSADE. Clin Cardiol 2009; 32:498-505. [PMID: 19743496 DOI: 10.1002/clc.20626] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Point-of-care (POC) testing may expedite the care of emergency department (ED) patients suspected of having acute coronary syndromes (ACS). We evaluated the use patterns of cardiac bedside markers or POC testing for troponin in patients with non-ST-segment elevation (NSTE) ACS. METHODS NSTE ACS data were collected from the Can Rapid Risk Stratification of Unstable Angina Patients Suppress Adverse Outcomes with Early Implementation of the American College of Cardiology/American Heart Association (ACC/AHA) Guidelines (CRUSADE) registry. We compared hospital and patient characteristics, in-hospital events, and process-of-care variables between hospitals to those that did not use POC testing in > or = 50% of enrolled patients. We examined characteristics, in-hospital events, and process-of-care differences between patients with negative vs positive troponin POC testing results. RESULTS Of 568 hospitals, 74 (16,276 patients) had high POC usage compared with 197 hospitals (50,782 patients) with no troponin POC usage. From the high POC usage hospitals, 12,604 patients had recorded troponin POC test results. Hospitals with high POC usage had a shorter ED length of stay and were less likely to administer aspirin, beta-blockers, and heparin during the first 24 hours of care. Patients with positive troponin POC results were more often older, minority, female, Medicare-insured, diabetic, and renally impaired. They had fewer electrocardiograms within 10 minutes but were more likely to get aspirin, beta-blockers, glycoprotein IIb/IIIa inhibitors, and heparin within 24 hours of arrival. They also had longer ED lengths of stay, received fewer in-hospital and interventional procedures, and had more adverse clinical events. CONCLUSION Differences existed in how hospitals used POC testing and the care given based on those results. Positive POC results are associated with expedited and higher use of anti-ischemic therapies.
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Affiliation(s)
- Kevin M Takakuwa
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania 19107, USA.
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A Systematic Review of Emergency Department Point-of-Care Cardiac Markers and Efficiency Measures. POINT OF CARE 2009. [DOI: 10.1097/poc.0b013e3181b316b9] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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McDonnell B, Hearty S, Leonard P, O'Kennedy R. Cardiac biomarkers and the case for point-of-care testing. Clin Biochem 2009; 42:549-61. [DOI: 10.1016/j.clinbiochem.2009.01.019] [Citation(s) in RCA: 199] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2008] [Revised: 01/23/2009] [Accepted: 01/28/2009] [Indexed: 11/26/2022]
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Gruson D, Thys F, Ketelslegers JM, Pasquet A, Delvau N, Deneys V, Verschuren F. Multimarker panel in patients admitted to emergency department: A comparison with reference methods. Clin Biochem 2009; 42:185-8. [DOI: 10.1016/j.clinbiochem.2008.08.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Revised: 07/31/2008] [Accepted: 08/12/2008] [Indexed: 11/16/2022]
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