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https://www.readbyqxmd.com/read/28718695/enhanced-procoagulant-activity-of-platelets-after-chemotherapy-in-non-small-cell-lung-cancer
#1
Ruishuang Ma, Yayan Bi, Junjie Kou, Jin Zhou, Jialan Shi
The procoagulant status of patients with non-small cell lung cancer (NSCLC) after chemotherapy is poorly characterized and the role of platelets in hypercoagulative state of NSCLC is unknown. The aim of this study was to evaluate the procoagulant activity (PCA) of platelets in NSCLC before and after chemotherapy. The subjects were 52 patients newly diagnosed with NSCLC. The patients had decreased clotting time compared with healthy subjects, and the thrombin-antithrombin complex increased 2.5 fold after chemotherapy...
July 18, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28714298/effect-of-sugammadex-on-coagulation-as-detected-by-rotational-thromboelastometry-in-morbidly-obese-patients
#2
Michele Carron, Diana Bertini, Tancredi Prandini, Francesca Fanton, Mirto Foletto, Carlo Ori, Egle Perissinotto, Paolo Simioni
BACKGROUND: Sugammadex, which is used to reverse rocuronium-induced neuromuscular blockade, has a limited and transient effect on activated partial thromboplastin time and prothrombin time. However, no data are available on the effects of sugammadex on coagulation in morbidly obese patients, as assessed by rotational thromboelastometry (ROTEM®). METHODS: Sixty patients received sugammadex 2 mg/kg or 4 mg/kg to reverse moderate or deep rocuronium-induced neuromuscular blockade (n = 30/group) at the end of surgery under desflurane anesthesia...
July 13, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28700408/three-versus-four-factor-prothrombin-complex-concentrates-for-factor-based-resuscitation-in-a-porcine-hemorrhagic-shock-model
#3
Donald Michael Moe, Michael Scott Lallemand, John Mason McClellan, Joshua Porter Smith, Shannon T Marko, Matthew J Eckert, Matthew J Martin
BACKGROUND: Bleeding is a leading cause of preventable death following severe injury. Prothrombin complex concentrates (PCC) treat inborn coagulation disorders and reverse oral anticoagulants, but are proposed for use in "factor-based" resuscitation strategies. Few studies exist for this indication in acidosis, or that compare 3-factor (3PCC) versus 4-factor (4PCC) products. We aimed to assess and compare their safety and efficacy in a porcine model of severe hemorrhagic shock and coagulopathy...
July 12, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28697023/clot-dynamics-and-mortality-the-ma-r-ratio
#4
Stephanie A Savage, Ben L Zarzaur, Timothy H Pohlman, Brian L Brewer, Louis J Magnotti, Martin A Croce, Garrett H Lim, Ali C Martin
INTRODUCTION: The coagulopathy of trauma, illustrated by a short R-time, is common and well understood. The physiology behind this may be early thrombin burst with rapid clot formation. Rapid consumption of fibrinogen, however, may result in weak clot and substrate depletion, resulting in low MA. While these characteristics are interesting, utilizing TEG to identify those at risk for subsequent bleeding diathesis, especially in those who do not demonstrate early signs of physiologic derangement, is challenging...
July 8, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28695976/adaptation-of-global-hemostasis-to-therapeutic-hypothermia-in-patients-with-out-of-hospital-cardiac-arrest-thromboelastography-study
#5
Aleksander Trąbka-Zawicki, Marek Tomala, Aleksander Zeliaś, Elżbieta Paszek, Wojciech Zajdel, Ewa Stępień, Krzysztof Żmudka
BACKGROUND: The use of mild therapeutic hypothermia (MTH) in patients after out-of-hospital cardiac arrest (OHCA) who are undergoing primary percutaneous coronary intervention (pPCI) can protect patients from thromboembolic complications. The aim of the study was to evaluate the adaptive mechanisms of the coagulation system in MTH-treated comatose OHCA survivors. METHODS: Twenty one comatose OHCA survivors with acute coronary syndrome undergoing immediate pPCI were treated with MTH...
July 11, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28695310/central-aortic-pulse-pressure-thrombogenicity-and-cardiovascular-risk
#6
Gailing Chen, Kevin P Bliden, Rahul Chaudhary, Fang Liu, Himabindu Kaza, Eliano P Navarese, Udaya S Tantry, Paul A Gurbel
High central aortic pulse pressure (CPP) and thrombin-induced platelet-fibrin clot strength (TIP-FCS) have been associated with ischemic outcomes in patients with coronary artery disease in separate studies. But, the ischemic risk associated with these factors has never been analyzed in a single study and their interrelation is unknown. The primary aim of the study was to establish cut points for CPP and TIP-FCS measured at the time of catheterization associated with long term major adverse cardiovascular events...
July 10, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28694742/clinical-validation-of-a-blood-based-classifier-for-diagnostic-evaluation-of-asymptomatic-individuals-with-pulmonary-nodules
#7
Charles E Birse, Jennifer L Tomic, Harvey I Pass, William N Rom, Robert J Lagier
BACKGROUND: The number of pulmonary nodules detected in the US is expected to increase substantially following recent recommendations for nationwide CT-based lung cancer screening. Given the low specificity of CT screening, non-invasive adjuvant methods are needed to differentiate cancerous lesions from benign nodules to help avoid unnecessary invasive procedures in the asymptomatic population. We have constructed a serum-based multi-biomarker panel and assessed its clinical accuracy in a retrospective analysis of samples collected from participants with suspicious radiographic findings in the Prostate, Lung, Chest and Ovarian (PLCO) cancer screening trial...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28693366/idarucizumab-for-dabigatran-reversal-full-cohort-analysis
#8
Charles V Pollack, Paul A Reilly, Joanne van Ryn, John W Eikelboom, Stephan Glund, Richard A Bernstein, Robert Dubiel, Menno V Huisman, Elaine M Hylek, Chak-Wah Kam, Pieter W Kamphuisen, Jörg Kreuzer, Jerrold H Levy, Gordon Royle, Frank W Sellke, Joachim Stangier, Thorsten Steiner, Peter Verhamme, Bushi Wang, Laura Young, Jeffrey I Weitz
Background Idarucizumab, a monoclonal antibody fragment, was developed to reverse the anticoagulant effect of dabigatran. Methods We performed a multicenter, prospective, open-label study to determine whether 5 g of intravenous idarucizumab would be able to reverse the anticoagulant effect of dabigatran in patients who had uncontrolled bleeding (group A) or were about to undergo an urgent procedure (group B). The primary end point was the maximum percentage reversal of the anticoagulant effect of dabigatran within 4 hours after the administration of idarucizumab, on the basis of the diluted thrombin time or ecarin clotting time...
July 11, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28693359/coagulation-monitoring-correlation-with-heparin-dose-in-pediatric-extracorporeal-life-support
#9
Katie Moynihan, Kerry Johnson, Lahn Straney, Christian Stocker, Ben Anderson, Prem Venugopal, John Roy
OBJECTIVES: Extracorporeal Life Support (ECLS) risks thrombotic and hemorrhagic complications. Optimal anti-coagulation monitoring is controversial. We compared coagulation tests evaluating the heparin effect in pediatric ECLS. METHODS: A retrospective study of children (<18yrs) undergoing ECLS over 12 months in a tertiary pediatric intensive care unit (PICU). Variables included anti-Factor Xa activity (anti-Xa), activated partial thromboplastin time (aPTT), activated clotting time (ACT) and thromboelastogram (TEG(®)6s) parameters: ratio and delta reaction (R) times (the ratio and difference, respectively, between R times in kaolin assays with and without heparinase)...
July 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28692110/plasma-carboxypeptidase-u-cpu-cpb2-tafia-generation-during-in-vitro-clot-lysis-and-its-interplay-between-coagulation-and-fibrinolysis
#10
Dorien Leenaerts, Jef Aernouts, Pieter Van Der Veken, Yani Sim, Anne-Marie Lambeir, Dirk Hendriks
Carboxypeptidase U (CPU, CPB2, TAFIa) is a basic carboxypeptidase that is able to attenuate fibrinolysis. The inactive precursor procarboxypeptidase U is converted to its active form by thrombin, the thrombin-thrombomodulin complex or plasmin. The aim of this study was to investigate and characterise the time course of CPU generation in healthy individuals. In plasma of 29 healthy volunteers, CPU generation was monitored during in vitro clot lysis. CPU activity was measured by means of an enzymatic assay that uses the specific substrate Bz-o-cyano-Phe-Arg...
July 6, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28691137/effective-use-of-balloon-guide-catheters-in-reducing-incidence-of-mechanical-thrombectomy-related-distal-embolization
#11
Dong Hoon Lee, Jae Hoon Sung, Sang Uk Kim, Ho Jun Yi, Jae Taek Hong, Sang Won Lee
BACKGROUND AND PURPOSE: The clinical benefit of endovascular stroke therapy has been demonstrated in several prospective randomized trials. However, in a relevant percentage of patients, mechanical thrombectomy bears the risk of causing new infarction in initially unaffected vascular territories through thrombus fragmentation and migration of clot debris. The goal of this study was to evaluate the use of the balloon guide catheter (BGC) to effectively achieve flow arrest and thrombus aspiration during the intervention to avoid distal embolization...
July 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28689183/acute-thrombus-formation-on-phosphorilcholine-surface-modified-flow-diverters
#12
Miklos Marosfoi, Frederic Clarencon, Erin T Langan, Robert M King, Olivia W Brooks, Takamisu Tamura, John M Wainwright, Matthew J Gounis, Srinivasan Vedantham, Ajit S Puri
PURPOSE: Thromboembolic complications remain a limitation of flow diverting stents. We hypothesize that phosphorilcholine surface modified flow diverters (Pipeline Flex with Shield Technology, sPED) would have less acute thrombus formation on the device surface compared with the classic Pipeline Embolization device (cPED). METHODS: Elastase-induced aneurysms were created in 40 rabbits and randomly assigned to receive cPED or sPED devices with and without dual antiplatelet therapy (DAPT) (four groups, n=10/group)...
July 8, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28688719/how-safe-are-noacs-compared-with-phenprocoumon-after-pulmonary-vein-isolation-with-the-cryoballoon-technique-using-purse-string-suture-closure
#13
Ersan Akkaya, Alexander Berkowitsch, Sergej Zaltsberg, Nikolas Deubner, Harald Greiss, Andreas Hain, Christian W Hamm, Johannes Sperzel, Malte Kuniss, Thomas Neumann
INTRODUCTION: The aim of this observational study was to compare the postprocedural incidence of bleeding and thromboembolic complications associated with novel oral anticoagulants (NOACs) with that of interrupted and continuous phenprocoumon after pulmonary vein isolation (PVI) using a purse-string suture (PSS) closure of the puncture site. METHODS AND RESULTS: Consecutive patients who had undergone PVI via cryoballoon ablation were divided into the following groups: (1) interrupted phenprocoumon with heparin bridging (n=101), (2) continuous phenprocoumon targeting an internationally normalized ratio>2 (n=70), and (3) NOACs without bridging that were restarted 2-4h after the procedure (n=185)...
June 23, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28688133/in-silico-evaluation-of-limited-blood-sampling-strategies-for-individualized-recombinant-factor-ix-prophylaxis-in-hemophilia-b-patients
#14
T Preijers, H C A M Hazendonk, K Fijnvandraat, F W G Leebeek, M H Cnossen, R A A Mathôt
BACKGROUND: Patients with severe hemophilia B regularly administer prophylactic intravenous doses of clotting factor IX (FIX) concentrate to maintain a trough level of at least 0.01 IUmL(-1) in order to prevent joint bleeds. Assessment of individual pharmacokinetic (PK) parameters allows individualization of the recombinant FIX (rFIX) dose. AIM: This in silico study aims to evaluate the predictive performance of limited sampling strategies (LSSs) with 1 to 3 samples to estimate individual PK parameters of rFIX...
July 8, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28686914/an-optimized-drvvt-based-assay-to-estimate-the-intensity-of-anticoagulation-in-patients-treated-with-direct-oral-anticoagulants
#15
Anne-Laure Sennesael, Thomas Exner, Bernard Chatelain, Sarah Lessire, Anne-Sophie Larock, Christelle Vancraeynest, Lionel Pochet, Jean-Michel Dogné, Anne Spinewine, François Mullier, Jonathan Douxfils
BACKGROUND: The dilute Russell's viper venom time (dRVVT) has been suggested for the assessment of the intensity of anticoagulation of all direct oral anticoagulants (DOACs). This study aimed to compare the performance of an optimized liquid-stable dRVVT-based DOAC assay (DRVV-DOAC) on clinical samples before and after mixing these with normal pooled plasma (NPP). METHODS: Forty-one apixaban, 25 dabigatran, 56 rivaroxaban and 49 vitamin K antagonists (VKAs) plasma samples were included for retrospective analysis...
June 28, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28686711/co-ordinated-spatial-propagation-of-blood-plasma-clotting-and-fibrinolytic-fronts
#16
Ansar S Zhalyalov, Mikhail A Panteleev, Marina A Gracheva, Fazoil I Ataullakhanov, Alexey M Shibeko
Fibrinolysis is a cascade of proteolytic reactions occurring in blood and soft tissues, which functions to disintegrate fibrin clots when they are no more needed. In order to elucidate its regulation in space and time, fibrinolysis was investigated using an in vitro reaction-diffusion experimental model of blood clot formation and dissolution. Clotting was activated by a surface with immobilized tissue factor in a thin layer of recalcified blood plasma supplemented with tissue plasminogen activator (TPA), urokinase plasminogen activator or streptokinase...
2017: PloS One
https://www.readbyqxmd.com/read/28682954/acute-intracardiac-thrombosis-and-pulmonary-thromboembolism-after-cardiopulmonary-bypass-a-systematic-review-of-reported-cases
#17
Brittney Williams, Brody Wehman, Michael A Mazzeffi, Patrick Odonkor, Ryan L Harris, Zachary Kon, Kenichi A Tanaka
Intracardiac thrombosis (ICT) and pulmonary thromboembolism (PE) after cardiopulmonary bypass (CPB) are life-threatening events, but pathological mechanisms are not yet well defined. The aim of this review is to provide an update of case literature of a postbypass hypercoagulable state. Case commonalities among 48 ICT/PE events included congestive heart failure (50%), platelet transfusion (37.5%), CPB duration greater than 3 hours (37.5%), and aortic injury (27.1%). Preexisting thrombophilia was rarely reported, and 16...
July 4, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28680886/the-phosphatase-inhibitor-calyculin-a-impairs-clot-retraction-platelet-activation-and-thrombin-generation
#18
Renáta Hudák, János Vincze, László Csernoch, Ildikó Beke Debreceni, Tamás Oláh, Ferenc Erdődi, Kenneth J Clemetson, János Kappelmayer
The aim of this study was to investigate the effect of the serine/threonine protein phosphatase inhibitor, calyculin-A (CLA), on clot formation and on the procoagulant activity of human platelets. Platelet-rich plasma (PRP) samples were preincubated with buffer or CLA and subsequently platelets were activated by the protease-activated receptor 1 (PAR-1) activator, thrombin receptor activating peptide (TRAP). Clot retraction was detected by observing clot morphology up to 1 hour, phosphatidylserine- (PS-) expression was studied by flow cytometry, and thrombin generation was measured by a fluorimetric assay...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28678733/preparation-characterization-and-blood-compatibility-assessment-of-a-novel-electrospun-nanocomposite-comprising-polyurethane-and-ayurvedic-indhulekha-oil-for-tissue-engineering-applications
#19
Manikandan Ayyar, Mohan Prasath Mani, Saravana Kumar Jaganathan, Rajasekar Rathanasamy
Electrospun polyurethane based nanocomposite scaffolds were fabricated by mixing with indhulekha oil. Scanning electron microscope (SEM) portrayed the nanofibrous nature of the composite and the average diameters of the composite scaffold were smaller than the pristine scaffolds. The fabricated scaffold was found to be hydrophobic (114°) due to the inclusion of indhulekha oil, which was displayed in contact angle measurement analysis. The fourier transform infrared spectroscopy (FTIR) results indicated that the indhulekha oil was dispersed in PU matrix identified by formation of hydrogen bond and peak shifting of CH group...
July 5, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28678046/coagulation-profile-is-not-a-predictor-of-acute-cerebrovascular-events-in-pediatric-extracorporeal-membrane-oxygenation-patients
#20
Pilar Anton-Martin, Janna Journeycake, Vinai Modem, Sailaja Golla, Lakshmi Raman, Jefferson Tweed, Cindy Darnell-Bowens
We performed a retrospective matched case-control study evaluating whether the traditional coagulation profile predicts cerebrovascular events in children on extracorporeal membrane oxygenation (ECMO) in a 71 bed intensive care unit at a tertiary children's hospital. Between 2009 and 2014, 241 neonates and children were initiated on ECMO. The cumulative 5 year incidence of intracranial hemorrhage and infarct was 9.2% and 7.9%, respectively. Thirty-six cases were individually matched 1:1 with control subjects based on age, primary diagnosis, ECMO type, cannulation site, and the presence of pre-ECMO coagulopathy...
July 3, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
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