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Laboratory and coagulation test

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https://www.readbyqxmd.com/read/28714924/cross-sectional-study-to-determine-the-prevalence-of-hepatitis-b-and-c-virus-infection-in-high-risk-groups-in-the-northeast-region-of-brazil
#1
Jakeline Ribeiro Barbosa, Cristianne Sousa Bezerra, Filipe Anibal Carvalho-Costa, Carolina Pimentel de Azevedo, Geane Lopes Flores, Jeová Keny Baima Colares, Danielle Malta Lima, Elisabeth Lampe, Lívia Melo Villar
Background: HBV (Hepatitis B Virus) and HCV (Hepatitis C Virus) infections are more prevalent in vulnerable populations than the general population. The objective of this study was to investigate the prevalence of HBV and HCV infection in HIV-positive patients (GI), chronic renal failure (CRF) patients (GII) and coagulation disorder individuals (GIII). Methods: A cross-sectional study was conducted from June 2014 to March 2015. Serum samples were tested for markers of hepatitis B and C by enzyme-linked immunosorbent assay (ELISA)...
July 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28706751/development-and-implementation-of-a-coagulation-factor-testing-method-utilizing-autoverification-in-a-high-volume-clinical-reference-laboratory-environment
#2
Paul W Riley, Benoit Gallea, Andre Valcour
BACKGROUND: Testing coagulation factor activities requires that multiple dilutions be assayed and analyzed to produce a single result. The slope of the line created by plotting measured factor concentration against sample dilution is evaluated to discern the presence of inhibitors giving rise to nonparallelism. Moreover, samples producing results on initial dilution falling outside the analytic measurement range of the assay must be tested at additional dilutions to produce reportable results...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28705054/radiofrequency-perforation-of-the-pulmonary-valve-an-efficient-low-cost-solution
#3
Stephen C Brown, Bjorn Cools, Derize Boshoff, Ruth Heying, Benedicte Eyskens, Marc Gewillig
Objective The aim of the study was to assess the feasibility of using commonly available catheterization laboratory equipment for radiofrequency perforation of the pulmonary valve in patients with pulmonary atresia and intact ventricular septum. Methods The system (off-label use for all items) is made up of a co-axial telescopic arrangement consisting of a 0.014" PT 2 ™ coronary guidewire, for insulation inside a 2.7-F microcatheter which has an inner lumen of 0.021". The microcatheter was passed via a standard 4-F right coronary catheter to just below the atretic pulmonary valve...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28680172/direct-oral-anticoagulants-and-vitamin-k-antagonists-for-treatment-of-deep-venous-thrombosis-and-pulmonary-embolism-in-the-outpatient-setting-comparative-economic-evaluation
#4
Abdullah S Al Saleh, Patrick Berrigan, David Anderson, Sudeep Shivakumar
BACKGROUND: To date, there have been few economic evaluations, from a Canadian perspective, of direct oral anticoagulants (DOACs) for the prevention of recurrent venous thromboembolism (VTE) in patients with acute unprovoked VTE. As a result, there is a lack of consensus about which treatment strategy should be adopted in the clinical setting. OBJECTIVES: To assess the cost-effectiveness of currently approved anti-coagulant options, in terms of cost per quality-adjusted life-year (QALY) gained, for the prevention of recurrent VTE in patients with unprovoked events managed on an outpatient basis...
May 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/28678302/clinical-pearls-laboratory-assessments-of-direct-oral-anticoagulants-doacs
#5
Robert C Gosselin, Robert Gosselin, Jonathan Douxfils, Dorothy Adcock
Direct oral anticoagulants (DOACS) are being used for stroke prevention in patients with atrial fibrillation as well as for prophylaxis and treatment of venous thromboembolism. Clinicians who treat, or may encounter, patients with DOAC exposure, should be aware of the limitations of coagulation testing in this setting, and seek counsel from their laboratory to understand the effects of DOACS on coagulation results. Generally, assays that employ clot based principles, or methods that require thrombin or Factor Xa activation or substrates may be affected by the presence of DOACS...
July 5, 2017: Hämostaseologie
https://www.readbyqxmd.com/read/28673222/rational-clinical-pathology-assessment-in-the-intensive-care-unit
#6
K S Rachakonda, M Parr, A Aneman, S Bhonagiri, S Micallef
Blood tests are ordered on a daily basis in intensive care units (ICU). There are no widely accepted guidelines for testing requirements. This study investigated the impact on ICU laboratory test costs of a multi-strategy change in practice involving routine blood testing. A single centre, prospective, interventional study using historical controls was undertaken to investigate the impact of ICU specialist authorisation of high-volume routine tests on ICU laboratory test costs. Prior to commencement of the study, ICU nursing and junior ICU doctors were able to order tests...
July 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28655949/peri-operative-blood-management
#7
REVIEW
Alex Eeles, Ravishankar Rao Baikady
Anaemia and allogeneic blood transfusions in surgical patients are associated with poor outcomes. Patient blood management (PBM) has been developed as an evidence-based clinical tool, by which clinicians can optimise anaemia, manage peri-operative bleeding, avoid unnecessary blood transfusion and improve patient outcome. This article aims to highlight the recent updates regarding evidence-based PBM in the perioperative period, following a thorough literature review involving original research articles, published guidelines and consensus documents discovered through an extensive PubMed and Medline search...
June 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28652957/a-retrospective-study-of-acute-renal-failure-in-children-its-incidence-etiology-complications-and-prognosis
#8
Kadar Ismail Hassan, Jama Hodan M, Chunfu Li
BACKGROUND: Acute renal failure (ARF) developed due to various causes and may lead to significant morbidity and mortality among pediatric patients. OBJECTIVES: The study was conducted to determine the incidence, etiology, outcome of treatment and clinical presentation of ARF in pediatric patients in Somalia. METHODS: Comprehensive case history of 39 pediatric patients below 12 years of age, admitted with renal diseases in four tertiary care hospitals in Hargeisa and Borama cities in Somalia during December 2015 to November 2016...
May 25, 2017: Curēus
https://www.readbyqxmd.com/read/28648013/-retrospective-analysis-of-anesthetic-and-perioperative-management-in-patients-of-acute-fatty-liver-of-pregnancy
#9
Y Y Qu, H Zeng, X Y Guo, M Li
Objective: To retrospectively analyze the clinical characteristics of patients with acute fatty liver of pregnancy (AFLP), and to discuss perioperative and anesthetic management. Methods: A retrospective review was conducted on the records of pregnant patients with a diagnosis of acute fatty liver of pregnancy in Peking University Third Hospital from January 2007 to December 2015. 12 cases were identified. The clinical features, preoperative laboratory findings, types of delivery, anesthetic techniques for cesarean section, and the outcomes of parturients and fetus were collected and analyzed...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647631/a-prospective-randomized-multicenter-clinical-trial-on-the-safety-and-efficacy-of-a-ready-to-use-fibrin-sealant-as-an-adjunct-to-hemostasis-during-vascular-surgery
#10
Ian Chetter, Gerard Stansby, José Aurelio Sarralde, Vicente Riambau, Antonio Giménez-Gaibar, Kent MacKenzie, Francisco Acín, Jordi Navarro-Puerto
PURPOSE: Anastomotic or "stitch hole" bleeding is common during vascular surgery with synthetic material such as Dacron or polytetrafluoroethylene (PTFE). Hemostatic adjuncts such as fibrin sealant (FS) may reduce blood loss and operating time in such circumstances. We evaluated the safety and the hemostatic effectiveness of a ready-to-use human plasma-derived FS in vascular surgery. METHODS: Patients with mild / moderate suture line bleeding during elective, open, vascular surgery using synthetic grafts or patches were studied...
June 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28647217/recognition-and-management-of-hemostatic-disorders-in-critically-ill-patients-needing-to-undergo-an-invasive-procedure
#11
REVIEW
Marcella C A Müller, Simon J Stanworth, Michiel Coppens, Nicole P Juffermans
Abnormal laboratory coagulation test results are frequently documented in critically ill patients, and these patients often also need to undergo invasive procedures. Clinicians have an understandable desire to minimize any perceived heightened risk of bleeding complications in those patients who require invasive procedures. In this setting, prophylactic administration of platelets or plasma is commonplace. This review explores the nature of these sequential statements and the degree to which these statements are supported by evidence...
June 15, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28640321/effects-of-direct-oral-anticoagulants-on-lupus-anticoagulant-assays-in-a-real-life-setting
#12
Aleksandra Antovic, Eva-Marie Norberg, Maria Berndtsson, Agnes Rasmuson, Rickard E Malmström, Mika Skeppholm, Jovan Antovic
Laboratory diagnosis of lupus anticoagulant (LA) is based on prolongation in at least one coagulation assay (diluted Russell's viper venom time - dRVVT or activated partial thromboplastin time - aPTT), which normalises after addition of phospholipids. Both assays may be influenced by anticoagulants and therefore LA should not be tested during warfarin or heparin treatment. It has been shown (primarily in vitro) that direct oral anticoagulants (DOACs - dabigatran [DAB], rivaroxaban [RIV] and apixaban [API]) may also influence LA testing...
June 22, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28640024/molecular-adsorbent-recirculating-system-can-reduce-short-term-mortality-among-patients-with-acute-on-chronic-liver-failure-a-retrospective-analysis
#13
Hans U Gerth, Michele Pohlen, Gerold Thölking, Hermann Pavenstädt, Marcus Brand, Anna Hüsing-Kabar, Christian Wilms, Miriam Maschmeier, Iyad Kabar, Josep Torner, Marco Pavesi, Vicente Arroyo, Rafael Banares, Hartmut H J Schmidt
OBJECTIVES: Acute-on-chronic liver failure is associated with numerous consecutive organ failures and a high short-term mortality rate. Molecular adsorbent recirculating system therapy has demonstrated beneficial effects on the distinct symptoms, but the associated mortality data remain controversial. DESIGN: Retrospective analysis of acute-on-chronic liver failure patients receiving either standard medical treatment or standard medical treatment and molecular adsorbent recirculating system...
June 21, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28637514/performance-of-point-of-care-international-normalized-ratio-measurement-to-diagnose-trauma-induced-coagulopathy
#14
Thomas Mistral, Yvonnick Boué, Jean-Luc Bosson, Pauline Manhes, Jules Greze, Julien Brun, Pierre Albaladejo, Jean-François Payen, Pierre Bouzat
BACKGROUND: Trauma-induced coagulopathy (TIC) is a common feature after severe trauma. Detection of TIC is based upon classic coagulation tests including international normalized ratio (INR) value. Point-of-care (POC) devices have been developed to rapidly measure INR at the bedside on whole blood. The aim of the study was to test the precision of the Coagucheck® XS Pro device for INR measurement at hospital admission after severe trauma. METHODS: We conducted a prospective observational study in a French level I trauma center...
June 21, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28611189/an-evaluation-of-a-coagulation-system-xprecia-stride-for-utilisation-in-anticoagulation-management
#15
Deborah McCahon, Andrea Roalfe, David A Fitzmaurice
AIM: To evaluate the reliability and performance of the Xprecia Stride coagulometer under the conditions in which it is most likely to be used. METHODS: The performance of the Xprecia Stride coagulometer was compared with a local laboratory and the CoaguChek systems routinely used for international normalised ratio (INR) estimation within one primary and one secondary care based anticoagulation clinic in Birmingham. Anticoagulation clinic personnel were trained to use the Xprecia Stride...
June 13, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28606277/-study-and-analysis-of-national-current-status-and-problems-of-anticoagulant-proteins-assay
#16
X L Liu, W B Zhou, C B Li, H R Hu, M T Peng
Objective: To investigate current status and problems of anticoagulant proteins assay in domestic laboratories so as to provide suggestions for implementing the standardization and quality improvement. Methods: Two hundred and seventy-four laboratories those had developed or prepared to do anticoagulant proteins assay were selected from one thousand and five hundred participants in the national coagulation screening External Quality Assessment(EQA) program by an internet survey and then a questionnaire and quality control materials were sent to them to carry out a further survey...
June 13, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28606160/consumption-coagulopathy-in-acute-aortic-dissection-principles-of-management
#17
Yuyong Liu, Lu Han, Jiachen Li, Ming Gong, Hongjia Zhang, Xinliang Guan
BACKGROUND: The effect of acute aortic dissection itself on coagulopathy or surgery-related coagulopathy has never been specifically studied. The aim of the present study was to perioperatively describe consumption coagulopathy in patients with acute aortic dissection. METHODS: Sixty-six patients with acute type A aortic dissection were enrolled in this study from January 2015 to September 2016. Thirty-six patients with thoracic aortic aneurysms were used as a control group during the same period...
June 12, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28599392/the-laboratory-control-of-anticoagulant-thromboprophylaxis-during-the-early-postpartum-period-after-cesarean-delivery
#18
Ekaterina M Koltsova, Anna N Balandina, Konstantin I Grischuk, Margarita A Shpilyuk, Elena A Seregina, Natalia M Dashkevich, Alexander V Poletaev, Alexey V Pyregov, Gennady T Sukhih, Ilya I Serebriyskiy, Fazly I Ataullakhanov
INTRODUCTION: The incidence of venous thromboembolism (VTE) after cesarean section is up to 0.6%, and the widespread use of cesarean section draws attention to this group. The dosage and duration of low-molecular-weight heparin (LMWH) prophylaxis after delivery is estimated by anamnestic risk-scales; however, the predictive potency for an individual patient's risk can be low. Laboratory hemostasis assays are expected to solve this problem. The aim of this study was to estimate the potency of tests to reflect the coagulation state of patients receiving LMWH in the early postpartum period...
May 25, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28593923/the-effects-of-transport-by-a-car-on-coagulation-tests
#19
Merve Ergin, Serpil Erdogan, Onur Akturk, Ozcan Erel
BACKGROUND: This research investigated the effects of the transport of blood samples between centers/laboratories by car on coagulation tests. METHODS: Five tubes of blood samples were taken from 20 healthy volunteers. The samples consisted of a baseline (control) group, centrifuged and noncentrifuged transported samples; centrifuged and noncentrifuged untransported samples. The groups of centrifuged and noncentrifuged samples were transported by car for 2 h. The centrifuged and noncentrifuged untransported samples were incubated in the laboratory until the transported samples arrived...
May 5, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28574019/k-time-maximum-amplitude-of-thromboelastogram-predict-post-central-venous-cannulation-bleeding-in-patients-with-cirrhosis-a-pilot-study
#20
Chandra K Pandey, Vandana Saluja, Kumar Gaurav, Manish Tandon, Vijay K Pandey, Ajeet S Bhadoria
BACKGROUND & OBJECTIVES: Coagulation and haemostasis are dynamic processes. The haemostatic changes in liver disease affect all aspects of coagulation. The prothrombin time (PT)/ international normalized ratio (INR) was developed to monitor oral anticoagulant therapy and the activated partial thromboplastin time to investigate inheritable single factor deficiencies. Viscoelastic tests such as thromboelastogram (TEG) give information about dynamics of clot formation (coagulation factor and anticoagulant activity), clot strength (platelets and fibrinogen) and clot stability (finbrinolysis and factor XIII)...
January 2017: Indian Journal of Medical Research
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