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Rotational Thromboelastometry

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https://www.readbyqxmd.com/read/29222338/blood-sample-transportation-by-pneumatic-transportation-systems-a-systematic-literature-review
#1
REVIEW
Mads Nybo, Merete E Lund, Kjell Titlestad, Christian U Maegaard
BACKGROUND: Pneumatic transportation systems (PTSs) are increasingly used for transportation of blood samples to the core laboratory. Many studies have investigated the impact of these systems on different types of analyses, but to elucidate whether PTSs in general are safe for transportation of blood samples, existing literature on the subject was systematically assessed. METHODS: A systematic literature review was conducted following the preferred reporting items for systematic reviews and metaanalyses (PRISMA) Statement guidelines to gather studies investigating the impact of PTS on analyses in blood samples...
December 8, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29198748/microparticles-from-stored-red-blood-cells-promote-a-hypercoagulable-state-in-a-murine-model-of-transfusion
#2
Young Kim, Brent T Xia, Andrew D Jung, Alex L Chang, William A Abplanalp, Charles C Caldwell, Michael D Goodman, Timothy A Pritts
BACKGROUND: Red blood cell-derived microparticles are biologically active, submicron vesicles shed by erythrocytes during storage. Recent clinical studies have linked the duration of red blood cell storage with thromboembolic events in critically ill transfusion recipients. In the present study, we hypothesized that microparticles from aged packed red blood cell units promote a hypercoagulable state in a murine model of transfusion. METHODS: Microparticles were isolated from aged, murine packed red blood cell units via serial centrifugation...
November 29, 2017: Surgery
https://www.readbyqxmd.com/read/29188763/prothrombotic-state-in-a-patient-with-acute-liver-failure-the-question-of-anticoagulation
#3
Ecaterina Scărlă Tescu, Dana Rodica Tomescu
A 35-year-old male with acute liver failure due to acute hepatitis B virus infection was admitted to the intensive care unit with significant hepatocellular injury, cholestasis, abnormal standard coagulation tests, normal rotational thromboelastometry indices, and without signs of bleeding. He underwent emergency liver transplantation without requiring blood product transfusions or procoagulant treatments. The postoperative course was complicated by deep vein thrombosis and impending hepatic artery thrombosis treated with unfractionated heparin, aspirin, and intravenous prostacyclin...
November 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29151081/association-between-standard-laboratory-and-functional-tests-of-coagulation-in-dilutional-coagulopathy-an-in-vitro-study
#4
L J Krzych, P F Czempik
Standard laboratory tests (SLTs) of coagulation are in common use in clinical practice. We aimed to determine the association between SLTs and functional tests of coagulation in blood samples diluted with balanced crystalloid and colloid solutions in an ex vivo setting. The study group comprised 32 healthy young male volunteers. Whole blood samples were diluted at a 4:1 ratio with balanced crystalloid (Plasmalyte®) and two balanced colloids, 6% hydroxyethyl starch 130/0.4 (Volulyte®) and succinylated gelatin (Geloplasma®)...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29150842/the-effect-of-6-hydroxyethyl-starch-130-0-4-on-acute-kidney-injury-in-paediatric-cardiac-surgery-a-prospective-randomised-trial
#5
H-W Oh, J-H Lee, H-C Kim, E-H Kim, I-K Song, H-S Kim, J-T Kim
We have evaluated the effect of a colloid solution on acute kidney injury in paediatric cardiac surgery. A total of 195 patients were ramdomly divided into an hydroxyethyl starch group and a control group. In the starch group, 6% hydroxyethyl starch 130/0.4 (Volulyte® ) was used as the primary fluid for volume resuscitation but was limited to 30 ml.kg-1 . In the control group, only crystalloid fluid was used during the peri-operative period. The incidence of acute kidney injury, peri-operative transfusion, clinical outcomes and laboratory data were compared...
November 17, 2017: Anaesthesia
https://www.readbyqxmd.com/read/29145467/adenosine-lidocaine-and-mg2-alm-fluid-therapy-attenuates-systemic-inflammation-platelet-dysfunction-and-coagulopathy-after-non-compressible-truncal-hemorrhage
#6
Hayley Letson, Geoffrey Dobson
BACKGROUND: Systemic inflammation and coagulopathy are major drivers of injury progression following hemorrhagic trauma. Our aim was to examine the effect of small-volume 3% NaCl adenosine, lidocaine and Mg2+ (ALM) bolus and 0.9% NaCl/ALM 'drip' on inflammation and coagulation in a rat model of hemorrhagic shock. METHODS: Sprague-Dawley rats (429±4 g) were randomly assigned to: 1) shams, 2) no-treatment, 3) saline-controls, 4) ALM-therapy, and 5) Hextend®. Hemorrhage was induced in anesthetized-ventilated animals by liver resection (60% left lateral lobe and 50% medial lobe)...
2017: PloS One
https://www.readbyqxmd.com/read/29126686/transfusion-threshold-of-hemoglobin-80-g-l-is-comparable-to-100-g-l-in-terms-of-bleeding-in-cardiac-surgery-a-prospective-randomized-study
#7
Antti Laine, Tomi Niemi, Alexey Schramko
OBJECTIVE: Anemia is common after cardiac surgery and, according to some suggestive evidence, may be associated with increased bleeding, other morbidity, and mortality. However, transfusion of red blood cells (RBC) may cause adverse effects and increase cost. The authors hypothesized that the restrictive hemoglobin threshold (Hb of 80 g/L) may aggravate bleeding more than the higher Hb threshold (Hb 100 g/L). DESIGN: Prospective randomized trial. TYPE OF HOSPITAL: University Hospital of Helsinki, Finland...
August 30, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29112094/thrombelastography-early-amplitudes-in-bleeding-and-coagulopathic-trauma-patients-results-from-a-multicenter-study
#8
Thomas H Laursen, Martin A S Meyer, Anna Sina P Meyer, Tina Gaarder, Paal A Naess, Jakob Stensballe, Sisse R Ostrowski, Pär I Johansson
BACKGROUND: Early amplitudes in the viscoelastic hemostatic assays Thrombelastography (TEG) and Rotation Thromboelastometry (ROTEM) provide fast results, which is critical in resuscitation of bleeding patients. This study investigated associations between TEG early amplitudes and standard TEG variables in a large multicenter cohort of moderately to severely injured trauma patients admitted at three North European level 1 Trauma Centers. METHODS: Prospective observational study of 404 trauma patients with clinical suspicion of severe injury from London, UK, Copenhagen, Denmark and Oslo, Norway...
November 3, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29108404/assessment-of-rotational-thromboelastometry-for-the-prediction-of-red-blood-cell-requirements-in-orthotopic-liver-transplantation
#9
Antoni Sabate, Annabel Blasi, Marta Costa, Raquel Reyes, Joan Beltran, Ferran Torres
BACKGROUND: In liver transplantation most studies were designed to predict massive transfusion rather than whether or not transfusion is required. We hypothesized that (presurgery) data from thromboelastometry may predict perioperative blood requirements. METHODS: A post-hoc analysis of data from a controlled trial was performed with the primary end point of predicting zero red blood cells. Of the 92 patients studied, 6 were excluded because of incomplete EXTEM and / or FIBTEM data...
November 6, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29095763/effects-of-malignancy-on-blood-coagulation-in-septic-intensive-care-patients
#10
Ecaterina Scărlătescu, Marcus D Lancé, Nathan J White, Stefan S Aramă, Dana R Tomescu
: The objectives of the study are to examine the effect of sepsis on the coagulation profile of patients having solid cancer and to test the hypothesis that septic patients with cancer have normal or increased hemostatic capacity despite prolonged standard coagulation tests (SCTs) compared with noninfected cancer patients. Patients with solid cancer were included in the study forming two groups: study group included patients with sepsis with minimum two organ dysfunctions and control group formed by noninfected cancer patients...
October 31, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29088950/neurosurgical-applications-of-viscoelastic-hemostatic-assays
#11
Svetlana Kvint, James Schuster, Monisha A Kumar
Patients taking antithrombotic agents are very common in neurosurgical practice. The perioperative management of these patients can be extremely challenging especially as newer agents, with poorly defined laboratory monitoring and reversal strategies, become more prevalent. This is especially true with emergent cases in which rapid reversal of anticoagulation is required and the patient's exact medical history is not available. With an aging patient population and the associated increase in diseases such as atrial fibrillation, it is expected that the use of these agents will continue to rise in coming years...
November 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/29077660/successful-resuscitation-of-maternal-cardiac-arrest-with-disseminated-intravascular-coagulation-guided-by-rotational-thromboelastometry-and-transesophageal-echocardiography-a-case-report
#12
Hannah Brown, Helen L Barrett, Julie Lee, Jason M Pincus, Rebecca M Kimble, Victoria A Eley
We present a case of maternal cardiac arrest during an elective cesarean delivery. Transesophageal echocardiography identified a large pulmonary artery mass, and guided resuscitation efforts. After return of spontaneous circulation, the patient developed disseminated intravascular coagulation with massive hemorrhage. Blood product selection and volume replacement were guided by rotational thromboelastometry and transesophageal echocardiography, respectively. Correction of coagulopathy was observed clinically and confirmed by rotational thromboelastometry...
October 26, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/29075072/evaluation-of-coagulation-profile-in-children-with-type-1-diabetes-mellitus-using-rotational-thromboelastometry
#13
Cigdem Binay, Ayse Bozkurt Turhan, Enver Simsek, Ozcan Bor, Olga Meltem Akay
The prothrombotic state in type 1 diabetes mellitus (T1DM) has been reported as a plausible cause of vascular complications. Rotational thromboelastometry (ROTEM) assay enables the global assessment of coagulation status. This study aimed to assess hypercoagulability in children with T1DM using ROTEM. A total of 43 T1DM children (20 females and 23 males) aged 2-18 years and age- and sex-matched 30 healthy control subjects were enrolled in the study group. ROTEM assays [intrinsic TEM (INTEM) and extrinsic TEM (EXTEM)] were used to measure and analyze coagulation time (CT), clot formation time, maximum clot firmness (MCF)...
December 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29055918/rotational-thromboelastometry-or-conventional-coagulation-tests-in-liver-transplantation-comparing-blood-loss-transfusions-and-cost
#14
Laura Smart, Khalid Mumtaz, Danielle Scharpf, Nicole O'Bleness Gray, Daniel Traetow, Sylvester Black, Anthony J Michaels, Elmahdi Elkhammas, Robert Kirkpatrick, A James Hanje
INTRODUCTION: Orthotopic liver transplantation (OLT) can be associated with significant bleeding requiring multiple blood product transfusions. Rotational thromboelastometry (ROTEM) is a point-of-care device that has been used to monitor coagulation during OLT. Whether it reduces blood loss/transfusions during OLT remains controversial. MATERIALS AND METHODS: We aim to compare ROTEM with conventional coagulation tests (aPTT, PT, INR, platelet count, fibrinogen) to guide transfusion of platelets, cryoprecipitate, and fresh frozen plasma (FFP) during OLT over 3 years...
October 16, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29035463/effect-of-balanced-crystalloid-gelatin-and-hydroxyethyl-starch-on-coagulation-detected-by-rotational-thromboelastometry-in-vitro
#15
Silvie Sevcikova, Tomas Vymazal, Miroslav Durila
BACKGROUND: Fluid resuscitation with crystalloid and colloid solutions is a common treatment in perioperative medicine. However, a variety of unbalanced or balanced solutions are used in clinical practice and there is still vivid debate going on regarding selection of optimal fluid with minimal negative effect on coagulation to minimize bleeding and blood transfusion requirements. The aim of the study was to investigate adverse effects of balanced crystalloids and colloids on coagulation measured by thromboelastometry in vitro...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28988002/the-effect-of-sepsis-and-septic-shock-on-the-viscoelastic-properties-of-clot-quality-and-mass-using-rotational-thromboelastometry-a-prospective-observational-study
#16
Gareth R Davies, Matthew Lawrence, Suresh Pillai, Gavin M Mills, Robert Aubrey, Dafydd Thomas, Rhodri Williams, Keith Morris, Phillip Adrian Evans
PURPOSE: The study purpose was to define changes in coagulation across the sepsis spectrum using rotational thromboelastometry (ROTEM). METHODS: Sepsis patients were recruited on admission to the Emergency Department and Intensive Care Units of a large teaching hospital in Wales. ROTEM markers of clot development and fibrinolysis were determined, as well as standard coagulation markers. A healthy control group matched for age and gender was also recruited (n=44)...
October 2, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28980758/impact-of-four-direct-oral-anticoagulants-on-rotational-thromboelastometry-rotem
#17
L Seyve, C Richarme, B Polack, R Marlu
INTRODUCTION: Rotational Thromboelastometry (ROTEM) is a point of care method used to monitor coagulation during surgery and to guide transfusion strategies in patients presenting with severe bleeding. The aim of our study was to determine the impact of four direct oral anticoagulants (DOACs) on 3 commonly used ROTEM tests. METHODS: Whole blood samples from 20 healthy donors were spiked in vitro with apixaban, edoxaban, rivaroxaban or dabigatran at 5 different plasma concentrations (0-1000 ng/mL)...
October 5, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28938703/evaluation-of-thromboelastometry-parameters-as-predictive-markers-for-sinusoidal-obstruction-syndrome-in-patients-undergoing-allogeneic-stem-cell-transplantation-for-acute-leukaemia
#18
Joanna Rupa-Matysek, Lidia Gil, Ewelina Wojtasińska, Zuzanna Kanduła, Adam Nowicki, Magdalena Matuszak, Mieczysław Komarnicki
Hepatic sinusoidal obstruction syndrome (previously named veno-occlusive disease, SOS/VOD) is a serious complication of allogeneic stem cell transplantation (HSCT). Early identification of patients at risk of SOS/VOD may possibly improve the outcome and reduce mortality. Rotation thromboelastometry (ROTEM) is global assay allowing for the precise assessment of both bleeding and thrombotic conditions, however, its usefulness in patients undergoing HSCT for acute leukaemia has not been studied. We evaluated the thromboelastometry parameters in patients undergoing allogeneic HSCT for acute leukaemia to identify candidate biomarkers of SOS/VOD occurrence...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28920906/clotchip-a-microfluidic-dielectric-sensor-for-point-of-care-assessment-of-hemostasis
#19
Debnath Maji, Michael A Suster, Erdem Kucukal, Ujjal D S Sekhon, Anirban Sen Gupta, Umut A Gurkan, Evi X Stavrou, Pedram Mohseni
This paper describes the design, fabrication, and testing of a microfluidic sensor for dielectric spectroscopy of human whole blood during coagulation. The sensor, termed ClotChip, employs a three-dimensional, parallel-plate, capacitive sensing structure with a floating electrode integrated into a microfluidic channel. Interfaced with an impedance analyzer, the ClotChip measures the complex relative dielectric permittivity, ϵ Tr, of human whole blood in the frequency range of 40 Hz to 100 MHz. The temporal variation in the real part of the blood dielectric permittivity at 1 MHz features a time to reach a permittivity peak, Tpeak, as well as a maximum change in permittivity after the peak, ∆εr,max, as two distinct parameters of ClotChip readout...
September 12, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28911285/in-vitro-evaluation-of-the-effect-of-haemodilution-with-dextran-40-on-coagulation-profile-as-measured-by-thromboelastometry-and-multiple-electrode-aggregometry
#20
Pca Kam, Jpc Liou, Kxf Yang
We evaluated the effects of haemodilution with either dextran 40 or 0.9% normal saline on coagulation in vitro using rotational thromboelastometry (ROTEM®, Pentapharm Co., Munich, Germany) and multiple electrode aggregometry (Multiplate® Platelet Function Analyser, Dynabyte, Munich, Germany). Venous blood samples obtained from 20 healthy volunteers were diluted in vitro with dextran 40 or normal saline by 5%, 10% and 15%. Fibrinogen concentration, ROTEM-EXTEM® (screening test for the extrinsic coagulation pathway), FIBTEM® (an EXTEM-based assay of the fibrin component of clot) parameters including coagulation time, clot formation time, alpha angle, maximum clot firmness and lysis index were measured in the undiluted sample and at each level of haemodilution...
September 2017: Anaesthesia and Intensive Care
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