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Banfi G, Božič B, Cihan M, Pašalić D, Pennestrì F, Plebani M. Point-of-care testing, near-patient testing and patient self-testing: warning points. Clin Chem Lab Med 2024; 0:cclm-2024-0525. [PMID: 38711414 DOI: 10.1515/cclm-2024-0525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/08/2024]
Abstract
Point-of-care testing (POCT), near-patient testing (NPT) and patient self-tests (PST) are diagnostic examinations performed at the time and place of patient care. While POCT and NPT are performed and analyzed by medical professionals, PST are based on samples and parameters directly collected and analyzed by lay users. These tests are spreading both in high income countries and in low to middle income countries as they are expected to improve healthcare efficiency and equity, by saving resources, releasing pressure from hospitals and reducing logistical barriers. However, accurate multidisciplinary assessment is mandatory to ensure that what they promise is real. We reviewed some important ethical aspects, international standards and regulations. The current risks associated with alternative ways of testing are explained by the principles of respect for patient autonomy and non-maleficence. Further evidence from multidisciplinary assessment is needed to evaluate pros and cons in light of the principles of beneficence and justice. Although POCT or NPT need common regulation and accurate provider training to ensure safe and appropriate interpretation of results, PST needs even more attention as they are subject to direct patient use. Randomized controlled trails including patient education should be conducted in order to provide reliable evidence on clinical outcomes, patient acceptance and cost-effectiveness. Mandatory regulation is needed to avoid harm and EU regulation should help different countries maintain a safe use of devices in a global population of producers and users.
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Affiliation(s)
- Giuseppe Banfi
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Borut Božič
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Murat Cihan
- Faculty of Medicine, Ordu University, Ordu, Türkiye
| | - Daria Pašalić
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, University of Zagreb School of Medicine, Zagreb, Croatia
| | | | - Mario Plebani
- Laboratory Medicine Unit, Department of Medicine, University of Padua, Padua, Italy
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Patel HM, Kaur MR, Haris Ali M, Hadi Z, Parikh A, Khan SH, Kamireddy M, Faiz H, Kamani YG, Agarwal A, Al Hasibuzzaman M. Evaluation of non-invasive diagnostic tools for diarrhea: a systematic review of point-of-care tests and biomarkers. Ann Med Surg (Lond) 2024; 86:2951-2962. [PMID: 38694383 PMCID: PMC11060204 DOI: 10.1097/ms9.0000000000001946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 03/02/2024] [Indexed: 05/04/2024] Open
Abstract
Background Diarrhea is a prevalent condition affecting millions worldwide. However, current standard diagnostic methods have many drawbacks. This review examines various non-invasive point-of-care (POC) tests and biomarkers aiding rapid diagnosis of diarrhea from different causes. Methods PubMed, PubMed Central, ScienceDirect, Cochrane Library, and Google Scholar were searched from 2013 to present for relevant literature. Two reviewers independently assessed included studies' quality using the Critical Appraisal Skills Programme (CASP) checklist. Results The search yielded 1453 studies, of which 39 were included after screening and applying eligibility criteria. Polymerase chain reaction (PCR) was the POC test in 25 studies, providing consistent sensitivity and specificity. For biomarkers, C-reactive protein (CRP), fecal calprotectin, and procalcitonin offered high sensitivity and specificity for conditions like acute pediatric diarrhea, microscopic colitis, and inflammatory diarrhea, respectively. Conclusion PCR proved the ideal POC test for rapid diarrhea diagnosis, while the procalcitonin biomarker helps differentiate inflammatory from non-inflammatory diarrhea. Other reviewed tools also demonstrated promising diagnostic performance, though improvements in sensitivity, specificity, and usability are still needed.
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Affiliation(s)
| | | | - Mohammad Haris Ali
- Shaikh Khalifa Bin Zayed Al-Nahyan Medical and Dental College, Lahore, Punjab
| | | | | | | | | | - Haseeb Faiz
- Department of Medicine, Jinnah Hospital, Lahore
| | - Yashkumar G. Kamani
- Cagayan State University College of Medicine, Tuguegarao, Cagayan Valley, Philippines
| | | | - Md. Al Hasibuzzaman
- Institute of Nutrition and Food Science, University of Dhaka, Dhaka
- Med Research Hub, Panchagarh, Bangladesh
- The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang Province, People’s Republic of China
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Blondeau JM, Coetzee J. Has coronavirus disease 2019 changed clinical microbiology laboratories forever? Future Microbiol 2023; 18:1211-1215. [PMID: 37750782 DOI: 10.2217/fmb-2023-0187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/27/2023] Open
Affiliation(s)
- Joseph M Blondeau
- Division of Clinical Microbiology, Royal University Hospital & Saskatchewan Health Authority, 103 Hospital Drive, Saskatoon, Saskatchewan, S7N 0W8, Canada
- Departments of Biochemistry, Microbiology & Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Departments of Pathology & Laboratory Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Department of Ophthalmology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Jennifer Coetzee
- Clinical Microbiology, Ampath Laboratories, 166 Witch-Hazel Avenue, Technopart, Centurion, 0157, Johannesburg, South Africa
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Maluleke K, Musekiwa A, Kgarosi K, Gregor EM, Dlangalala T, Nkambule S, Mashamba-Thompson T. A Scoping Review of Supply Chain Management Systems for Point of Care Diagnostic Services: Optimising COVID-19 Testing Capacity in Resource-Limited Settings. Diagnostics (Basel) 2021; 11:diagnostics11122299. [PMID: 34943536 PMCID: PMC8700402 DOI: 10.3390/diagnostics11122299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 12/23/2022] Open
Abstract
Background: Point of care (POC) testing has enabled rapid coronavirus disease 2019 (COVID-19) diagnosis in resource-limited settings with limited laboratory infrastructure and high disease burden. However, the accessibility of the tests is not optimal in these settings. This scoping review mapped evidence on supply chain management (SCM) systems for POC diagnostic services to reveal evidence that can help guide future research and inform the improved implementation of SARS-CoV-2 POC diagnostics in resource-limited settings. Methodology: This scoping review was guided by an adapted version of the Arksey and O’Malley methodological framework. We searched the following electronic databases: Medline Ovid, Medline EBSCO, Scopus, PubMed, PsychInfo, Web of Science and EBSCOHost. We also searched grey literature in the form of dissertations/theses, conference proceedings, websites of international organisations such as the World Health Organisation and government reports. A search summary table was used to test the efficacy of the search strategy. The quality of the included studies was appraised using the mixed method appraisal tool (MMAT) version 2018. Results: We retrieved 1206 articles (databases n = 1192, grey literature n = 14). Of these, 31 articles were included following abstract and full-text screening. Fifteen were primary studies conducted in LMICs, and 16 were reviews. The following themes emerged from the included articles: availability and accessibility of POC diagnostic services; reasons for stockouts of POC diagnostic tests (procurement, storage, distribution, inventory management and quality assurance) and human resources capacity in POC diagnostic services. Of the 31 eligible articles, 15 underwent methodological quality appraisal with scores between 90% and 100%. Conclusions: Our findings revealed limited published research on SCM systems for POC diagnostic services globally. We recommend primary studies aimed at investigating the barriers and enablers of SCM systems for POC diagnostic services for highly infectious pathogens such SARS-CoV-2 in high disease-burdened settings with limited laboratory infrastructures.
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Affiliation(s)
- Kuhlula Maluleke
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria 0084, South Africa; (A.M.); (T.D.)
- Correspondence:
| | - Alfred Musekiwa
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria 0084, South Africa; (A.M.); (T.D.)
| | - Kabelo Kgarosi
- Department of Library Services, Faculty of Health Sciences, University of Pretoria, Pretoria 0084, South Africa;
| | - Emily Mac Gregor
- School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0084, South Africa;
| | - Thobeka Dlangalala
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria 0084, South Africa; (A.M.); (T.D.)
| | - Sphamandla Nkambule
- Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban 4000, South Africa;
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Wang IE, Cooper G, Mousa SA. Diagnostic Approaches for COVID-19 and Its Associated Complications. Diagnostics (Basel) 2021; 11:2071. [PMID: 34829418 PMCID: PMC8619505 DOI: 10.3390/diagnostics11112071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/23/2022] Open
Abstract
With almost 4 million deaths worldwide from the COVID-19 pandemic, the efficient and accurate diagnosis and identification of COVID-19-related complications are more important than ever. Scales such as the pneumonia severity index, or CURB-65, help doctors determine who should be admitted to the hospital or the intensive care unit. To properly treat and manage admitted patients, standardized sampling protocols and methods are required for COVID-19 patients. Using PubMed, relevant articles since March 2020 on COVID-19 diagnosis and its complications were analyzed. Patients with COVID-19 had elevated D-dimer, thrombomodulin, and initial factor V elevation followed by decreased factor V and factor VII and elevated IL-6, lactate dehydrogenase, and c-reactive protein, which indicated coagulopathy and possible cytokine storm. Patients with hypertension, newly diagnosed diabetes, obesity, or advanced age were at increased risk for mortality. Elevated BUN, AST, and ALT in severe COVID-19 patients was associated with acute kidney injury or other organ damage. The gold standard for screening COVID-19 is reverse transcriptase polymerase chain reaction (RT-PCR) using sputum, oropharyngeal, or nasopharyngeal routes. However, due to the low turnover rate and limited testing capacity of RT-PCR, alternative diagnostic tools such as CT-scan and serological testing (IgM and IgG) can be considered in conjunction with symptom monitoring. Advancements in CRISPR technology have also allowed the use of alternative COVID-19 testing, but unfortunately, these technologies are still under FDA review and cannot be used in patients. Nonetheless, increased turnover rates and testing capacity allow for a bright future in COVID-19 diagnosis.
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Affiliation(s)
| | | | - Shaker A. Mousa
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, 1 Discovery Drive, Rensselaer, NY 12144, USA; (I.E.W.); (G.C.)
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Hotinger JA, Morris ST, May AE. The Case against Antibiotics and for Anti-Virulence Therapeutics. Microorganisms 2021; 9:2049. [PMID: 34683370 PMCID: PMC8537500 DOI: 10.3390/microorganisms9102049] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 12/14/2022] Open
Abstract
Although antibiotics have been indispensable in the advancement of modern medicine, there are downsides to their use. Growing resistance to broad-spectrum antibiotics is leading to an epidemic of infections untreatable by first-line therapies. Resistance is exacerbated by antibiotics used as growth factors in livestock, over-prescribing by doctors, and poor treatment adherence by patients. This generates populations of resistant bacteria that can then spread resistance genes horizontally to other bacterial species, including commensals. Furthermore, even when antibiotics are used appropriately, they harm commensal bacteria leading to increased secondary infection risk. Effective antibiotic treatment can induce bacterial survival tactics, such as toxin release and increasing resistance gene transfer. These problems highlight the need for new approaches to treating bacterial infection. Current solutions include combination therapies, narrow-spectrum therapeutics, and antibiotic stewardship programs. These mediate the issues but do not address their root cause. One emerging solution to these problems is anti-virulence treatment: preventing bacterial pathogenesis instead of using bactericidal agents. In this review, we discuss select examples of potential anti-virulence targets and strategies that could be developed into bacterial infection treatments: the bacterial type III secretion system, quorum sensing, and liposomes.
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Affiliation(s)
| | | | - Aaron E. May
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23219, USA; (J.A.H.); (S.T.M.)
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Piva E, Zuin J, Pelloso M, Tosato F, Fogar P, Plebani M. Monocyte distribution width (MDW) parameter as a sepsis indicator in intensive care units. Clin Chem Lab Med 2021; 59:1307-1314. [PMID: 33675202 DOI: 10.1515/cclm-2021-0192] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Patients in Intensive Care Units (ICU) are a high-risk population for sepsis, recognized as a major cause of admission and death. The aim of the current study was to evaluate the diagnostic accuracy and prognostication of monocyte distribution width (MDW) in sepsis for patients admitted to ICU. METHODS Between January and June 2020, we conducted a prospective observational study during the hospitalization of 506 adult patients admitted to the ICU. MDW was evaluated in 2,367 consecutive samples received for routine complete blood counts (CBC) performed once a day and every day during the study. Sepsis was diagnosed according to Sepsis-3 criteria and patients enrolled were classified in the following groups: no sepsis, sepsis and septic shock. RESULTS MDW values were significantly higher in patients with sepsis or septic shock in comparison to those within the no sepsis group [median 26.23 (IQR: 23.48-29.83); 28.97 (IQR: 21.27-37.21); 21.99 (IQR: 19.86-24.36) respectively]. ROC analysis demonstrated that AUC is 0.785 with a sensitivity of 66.88% and specificity of 77.79% at a cut-off point of 24.63. In patients that developed an ICU-acquired sepsis MDW showed an increase from 21.33 [median (IQR: 19.47-21.72)] to 29.19 [median (IQR: 27.46-31.47)]. MDW increase is not affected by the aetiology of sepsis, even in patients with COVID-19. In sepsis survivors a decrease of MDW values were found from the first time to the end of their stay [median from 29.14 (IQR: 26.22-32.52) to 25.67 (IQR: 22.93-30.28)]. CONCLUSIONS In ICU, MDW enhances the sepsis detection and is related to disease severity.
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Affiliation(s)
- Elisa Piva
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Jenny Zuin
- Department of Medicine-DIMED, University of Padova, Padova, Italy
| | - Michela Pelloso
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Francesca Tosato
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Paola Fogar
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Mario Plebani
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy.,Department of Medicine-DIMED, University of Padova, Padova, Italy
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Mak GC, Lau SS, Wong KK, Chow NL, Lau CS, Lam ET, Chan RC, Tsang DN. Analytical sensitivity and clinical sensitivity of the three rapid antigen detection kits for detection of SARS-CoV-2 virus. J Clin Virol 2020; 133:104684. [PMID: 33176236 DOI: 10.1016/j.jcv.2020.104684] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/14/2020] [Accepted: 10/24/2020] [Indexed: 01/28/2023]
Abstract
We compared the three commercially available rapid antigen detection (RAD) kits for detection of SARS-CoV-2 virus. The three RAD kits varied from 102–105 fold less sensitive than RT-PCR. Clinical sensitivity of RAD kits ranged from 22.9 %–71.4 % for detecting respiratory specimens from COVID-19 patients. Understanding the clinical characteristics of different RAD kits can increase the likelihood of positive results.
Background Numerous rapid antigen detection (RAD) kits for diagnosing COVID-19 patients are available in the market recently. Objective To compare analytical sensitivity and clinical sensitivity for the three commercially available RAD kits. Study Design Analytical sensitivity for the detection of SARS-CoV-2 virus was determined by limit of detection (LOD) using RT-PCR as a reference method. Clinical sensitivity was evaluated by using respiratory specimens collected from confirmed COVID-19 patients. Results The LOD results showed that the three RAD kits varied from 102–105 fold less sensitive than RT-PCR. Clinical sensitivity of RAD kits ranged from 22.9 %–71.4 % for detecting specimens from COVID-19 patients. Conclusions Although RAD kits were less sensitive than RT-PCR, understanding the clinical characteristics of different RAD kits can guide us to obtain suitable specimens for testing. The likelihood of positive results for RAD kits will be higher.
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