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Antifibrinolytics

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https://www.readbyqxmd.com/read/28632940/characterization-of-the-i4399m-variant-of-apolipoprotein-a-implications-for-altered-prothrombotic-properties-of-lipoprotein-a
#1
Corey A Scipione, Jackson T McAiney, Daniel J Simard, Zainab A Bazzi, Matthew Gemin, Rocco Romagnuolo, Fraser L Macrae, Robert A Ariëns, Robert A Hegele, Janeen Auld, James W Gauld, Michael B Boffa, Marlys L Koschinsky
BACKGROUND: Lipoprotein(a) (Lp(a)) is a causal risk factor for a variety of cardiovascular diseases. Apolipoprotein(a) (apo(a)), the distinguishing component of Lp(a), is homologous to plasminogen, suggesting that Lp(a) can interfere with the normal fibrinolytic functions of plasminogen. This has implications for the persistence of fibrin clots in the vasculature and hence to atherothrombotic diseases. A single nucleotide polymorphism (rs3798220) in the gene encoding apo(a) has been reported that results in an Ile to Met substitution in the protease-like domain (I4399M variant)...
June 20, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28611888/efficacy-and-safety-of-tranexamic-acid-in-prehospital-traumatic-hemorrhagic-shock-outcomes-of-the-cal-pat-study
#2
Michael M Neeki, Fanglong Dong, Jake Toy, Reza Vaezazizi, Joe Powell, Nina Jabourian, Alex Jabourian, David Wong, Richard Vara, Kathryn Seiler, Troy W Pennington, Joe Powell, Chris Yoshida-McMath, Shanna Kissel, Katharine Schulz-Costello, Jamish Mistry, Matthew S Surrusco, Karen R O'Bosky, Daved Van Stralen, Daniel Ludi, Karl Sporer, Peter Benson, Eugene Kwong, Richard Pitts, John T Culhane, Rodney Borger
INTRODUCTION: The California Prehospital Antifibrinolytic Therapy (Cal-PAT) study seeks to assess the safety and impact on patient mortality of tranexamic acid (TXA) administration in cases of trauma-induced hemorrhagic shock. The current study further aimed to assess the feasibility of prehospital TXA administration by paramedics within the framework of North American emergency medicine standards and protocols. METHODS: This is an ongoing multi-centered, prospective, observational cohort study with a retrospective chart-review comparison...
June 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28605821/abnormal-uterine-bleeding
#3
Cristina Laguna Benetti-Pinto, Ana Carolina Japur de Sá Rosa-E-Silva, Daniela Angerame Yela, José Maria Soares Júnior
Abnormal uterine bleeding is a frequent condition in Gynecology. It may impact physical, emotional sexual and professional aspects of the lives of women, impairing their quality of life. In cases of acute and severe bleeding, women may need urgent treatment with volumetric replacement and prescription of hemostatic substances. In some specific cases with more intense and prolonged bleeding, surgical treatment may be necessary. The objective of this chapter is to describe the main evidence on the treatment of women with abnormal uterine bleeding, both acute and chronic...
June 12, 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28601210/tranexamic-acid-use-in-prehospital-uncontrolled-hemorrhage
#4
REVIEW
Benjamin R Huebner, Warren C Dorlac, Chris Cribari
The use of tranexamic acid (TXA) in the treatment of trauma patients was relatively unexplored until the landmark Clinical Randomisation of an Antifibrinolytic in Significant Haemorrhage-2 (CRASH-2) trial in 2010 demonstrated a reduction in mortality with the use of TXA. Although this trial was a randomized, double-blinded, placebo-controlled study incorporating >20,000 patients, numerous limitations and weaknesses have been described. As a result, additional studies have followed, delineating the potential risks and benefits of TXA administration...
June 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28591091/antifibrinolytic-agents-in-acquired-bleeding-disorders
#5
Mark Walsh
No abstract text is available yet for this article.
May 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28584521/tranexamic-acid-encapsulating-thermosensitive-liposomes-for-site-specific-pharmaco-laser-therapy-of-port-wine-stains
#6
M Ingmar van Raath, Ruud Weijer, Gia Hung Nguyen, Bernard Choi, Anton I de Kroon, Michal Heger
Site-specific pharmaco-laser therapy (SSPLT) is a developmental stage treatment modality designed to non-invasively remove superficial vascular pathologies such as port wine stains (PWS) by combining conventional laser therapy with the prior administration of a prothrombotic and/or antifibrinolytic pharmaceutical-containing drug delivery system. For the antifibrinolytic SSPLT component, six different PEGylated thermosensitive liposomal formulations encapsulating tranexamic acid (TA), a potent antifibrinolytic lysine analogue, were characterized for drug:lipid ratio, encapsulation efficiency, size, endovesicular TA concentration (CTA), phase transition temperature (Tm), and assayed for heat-induced TA release...
August 2016: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/28572282/cm352-reduces-brain-damage-and-improves-functional-recovery-in-a-rat-model-of-intracerebral-hemorrhage
#7
José A Rodríguez, Tomás Sobrino, Esteban López-Arias, Ana Ugarte, Juan A Sánchez-Arias, Alba Vieites-Prado, Irene de Miguel, Julen Oyarzabal, José A Páramo, Francisco Campos, Josune Orbe, José Castillo
BACKGROUND: Intracerebral hemorrhage (ICH) is an acute neurological disorder with high mortality and no effective treatment. In addition to the initial bleeding event, rebleeding and hematoma expansion are associated with poor outcome in these patients. We studied the effectiveness of the new antifibrinolytic agent CM352, a short-half-life matrix metalloproteinase inhibitor, for achieving early hemostasis and improving functional recovery in a rat model of collagenase-induced ICH. METHODS AND RESULTS: ICH was induced by striatal injection of collagenase, and 1 hour later, rats received an intravenous injection of saline (n=6) or CM352 (1 mg/kg, n=6)...
June 1, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28552944/intraoperative-tranexamic-acid-is-associated-with-postoperative-stroke-in-patients-undergoing-cardiac-surgery
#8
Zhen-Feng Zhou, Feng-Jiang Zhang, Yang-Fan Huo, Yun-Xian Yu, Li-Na Yu, Kai Sun, Li-Hong Sun, Xiu-Fang Xing, Min Yan
BACKGROUND: Stroke is a devastating and potentially preventable complication of cardiac surgery. Tranexamic acid (TXA) is a commonly antifibrinolytic agent in cardiac surgeries with cardiopulmonary bypass (CPB), however, there is concern that it might increase incidence of stroke after cardiac surgery. In this retrospective study, we investigated whether TXA usage could increase postoperative stroke in cardiac surgery. METHODS: A retrospective study was conducted from January 1, 2010, to December 31, 2015, in 2,016 patients undergoing cardiac surgery, 664 patients received intravenous TXA infusion and 1,352 patients did not receive any antifibrinolytic agent...
2017: PloS One
https://www.readbyqxmd.com/read/28546128/predictive-factors-of-intraoperative-cell-salvage-during-pediatric-scoliosis-surgery-cell-saver-during-scoliosis-surgery-in-children
#9
Daphné Michelet, Florence Julien-Marsollier, Julie Hilly, Thierno Diallo, Christophe Vidal, Souhayl Dahmani
INTRODUCTION: blood saving strategy during spinal surgery in children often includes recombinant erythropoietin (rEPO) and antifibrinolytic therapapy (AFT). The aim of this study was to investigate the efficacy of intraoperative blood salvage in decreasing homologous blood transfusion. MATERIAL AND METHODS: using the prospective data from patients operated during a one year period for scoliosis correction, we calculate the predictable hematocrit at day postoperative 1 without the use of blood salvage and compare it to the target hematocrit transfusion according to patient's status...
May 22, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28544698/the-use-of-antifibrinolytics-in-pediatric-patients-with-hypoproliferative-thrombocytopenia
#10
Meghan Delaney, Dana C Matthews, Terry B Gernsheimer
Despite the use of evidence-based platelet transfusion therapy during periods of hypoproliferative thrombocytopenia, a large proportion of pediatric hematology/oncology patients continue to suffer from clinically significant bleeding. Antifibrinolytic (AF) drugs have been shown in certain surgical and trauma settings to decrease bleeding, blood transfusion, and improve survival. We conducted a retrospective assessment of the safety of using AF drugs in pediatric patients with hypoproliferative thrombocytopenia at our center as well as the impact on bleeding occurrence and severity...
May 24, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28523092/management-of-a-life-threatening-bleeding-following-extraction-of-deciduous-second-molar-related-to-a-capillary-haemangioma
#11
REVIEW
Amr Amin Ghanem, Yasser Nabil El Hadidi
Various forms of vascular lesion affect the head and neck region. The head and neck vascular lesions are classified into neoplasms and malformations. Neoplasm presents either as hemangioma or lymphangioma; neoplasm usually presents in young age compared with vascular malformation. A 9-year-old female patient presented to the outpatient clinic referred from the department of pedodontics after extraction of a right mandibular second deciduous molar. Extraction was done by dental GP in outpatient clinic. Massive bleeding followed the extraction...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28512017/a-case-of-autoimmune-severe-acquired-von-willebrand-syndrome-type-3-like
#12
Chakri Gavva, Prapti Patel, Yu-Min Shen, Eugene Frenkel, Ravi Sarode
Von Willebrand disease (VWD) is the most common congenital bleeding disorder and is due to quantitative or qualitative defects of von Willebrand factor (VWF). Acquired defects of VWF, termed acquired von Willebrand syndrome (AVWS), are due to a host of different mechanisms. Autoantibody-mediated AVWS may be associated with lymphoproliferative or immunological disorders, such as systemic lupus erythematosus (SLE). A large majority of AVWS cases are type 1 or type 2A-like and patients tend to have a mild to moderate bleeding tendency...
April 27, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28501326/management-of-platelet-disorders-and-platelet-transfusions-in-icu-patients
#13
REVIEW
Neil Blumberg, Jill M Cholette, Amy E Schmidt, Richard P Phipps, Sherry L Spinelli, Joanna M Heal, Anthony P Pietropaoli, Majed A Refaai, Patricia J Sime
Thrombocytopenia or receipt of antiplatelet drugs, with or without bleeding, is a common indication for platelet transfusions in the ICU. However, there is almost no evidence base for these practices other than expert opinion. Also common is use of platelet transfusions prior to invasive procedures or surgery in patients with thrombocytopenia. Likewise, there is no high-quality evidence that such practices are efficacious or safe. Recently, it has become clear that, whether causal or not, patients receiving prophylactic platelet transfusions experience high rates of nosocomial infection, thrombosis, organ failure, and mortality, which increase the urgency and need for randomized trials to assess these practices...
May 4, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28497100/does-tranexamic-acid-reduce-bleeding-during-femoral-fracture-operation
#14
Mohammad Haghighi, Hossein Ettehad, Mohsen Mardani-Kivi, Ahmadreza Mirbolook, Bahram Naderi Nabi, Roya Moghaddam, Abbas Sedighinejad, Gita Khanjanian
BACKGROUND: Proximal Femoral shaft fractures are commonly associated with marked blood loss which can lead to postoperative acute anemia and some other complications. Tranexamic acid (TA) is an antifibrinolytic medication that reduces intra-and postoperative blood loss and transfusion requirements during some elective surgeries. The aim of this study is to evaluate the effect of intravenous Tranexamic acid (TA) on intraoperative blood loss and a subsequent need for transfusion in patients who were undergoing surgery for femoral shaft fractures in trauma setting...
March 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28491013/peptides-with-6-aminohexanoic-acid-synthesis-and-evaluation-as-plasmin-inhibitors
#15
Maciej Purwin, Agnieszka Markowska, Irena Bruzgo, Tomasz Rusak, Arkadiusz Surażyński, Urszula Jaworowska, Krystyna Midura-Nowaczek
Fifteen new peptide derivatives of ɛ-aminocaproic acid (EACA) containing the known fragment -Ala-Phe-Lys- with an affinity for plasmin were synthesised in the present study. The synthesis was carried out a solid phase. The following compounds were synthesised: H-Phe-Lys-EACA-X, H-d-Ala-Phe-Lys-EACA-X, H-Ala-Phe-Lys-EACA-X, H-d-Ala-Phe-EACA-X and H-Ala-Phe-EACA-X, where X = OH, NH2 and NH-(CH2)5-NH2. All peptides, except for those containing the sequence H-Ala-Phe-EACA-X, displayed higher inhibitory activity against plasmin than EACA...
2017: International Journal of Peptide Research and Therapeutics
https://www.readbyqxmd.com/read/28475556/high-concentrations-of-tranexamic-acid-inhibit-ionotropic-glutamate-receptors
#16
Irene Lecker, Dian-Shi Wang, Kirusanthy Kaneshwaran, C David Mazer, Beverley A Orser
BACKGROUND: The antifibrinolytic drug tranexamic acid is structurally similar to the amino acid glycine and may cause seizures and myoclonus by acting as a competitive antagonist of glycine receptors. Glycine is an obligatory co-agonist of the N-methyl-D-aspartate (NMDA) subtype of glutamate receptors. Thus, it is plausible that tranexamic acid inhibits NMDA receptors by acting as a competitive antagonist at the glycine binding site. The aim of this study was to determine whether tranexamic acid inhibits NMDA receptors, as well as α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid and kainate subtypes of ionotropic glutamate receptors...
July 2017: Anesthesiology
https://www.readbyqxmd.com/read/28474812/safety-of-antifibrinolytics-in-cranial-vault-reconstructive-surgery-a-report-from-the-pediatric-craniofacial-collaborative-group
#17
(no author information available yet)
No abstract text is available yet for this article.
June 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28459723/aortoiliac-thrombosis-following-tranexamic-acid-administration-during-urgent-cesarean-hysterectomy-a-case-report
#18
Omar S Hajmurad, Ankeet A Choxi, Zahira Zahid, Roman Dudaryk
Postpartum hemorrhage (PPH) contributes to 25% of maternal deaths worldwide. Abnormal placentation is a well-known culprit of PPH. Although controversial, iliac artery balloon occlusion has been used in patients to decrease bleeding. The use of antifibrinolytic agents, such as tranexamic acid (TXA), have gained popularity in the management of PPH. We present a 35-year-old parturient with placenta percreta that was managed with internal iliac artery balloon occlusion with concomitant use of TXA during urgent cesarean hysterectomy with subsequent aortoiliac thrombosis formation...
April 28, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28457777/antifibrinolytic-agents-in-cardiac-and-noncardiac-surgery-a-comprehensive-overview-and-update
#19
REVIEW
Neal S Gerstein, Janet K Brierley, Jimmy Windsor, Pramod V Panikkath, Harish Ram, Kirill M Gelfenbeyn, Lindsay J Jinkins, Liem C Nguyen, Wendy H Gerstein
No abstract text is available yet for this article.
February 5, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28449959/resource-utilization-in-adolescent-idiopathic-scoliosis-surgery-is-there-opportunity-for-standardization
#20
Baron S Lonner, Courtney S Toombs, Justin C Paul, Suken A Shah, Harry L Shufflebarger, John M Flynn, Peter O Newton
INTRODUCTION: Recent healthcare reforms have raised the importance of cost and value in the management of disease. Value is a function of benefit and cost. Understanding variability in resources utilized by individual surgeons to achieve similar outcomes may provide an opportunity for cutting costs though greater standardization. The purpose of this study is to evaluate differences in use of implants and hospital resources among surgeons performing adolescent idiopathic scoliosis (AIS) surgery...
May 2017: Spine Deformity
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