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Unfractionated heparin

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https://www.readbyqxmd.com/read/28638161/argatroban-for-heparin-induced-thrombocytopenia-during-venovenous-extracorporeal-membrane-oxygenation-with-continuous-venovenous-hemofiltration
#1
Jonathan H Sin, Natasha D Lopez
Patients receiving extracorporeal membrane oxygenation (ECMO) are at risk of circuit thrombosis due to constant contact between blood and the extracorporeal components. Unfractionated heparin has traditionally been used in this setting as a systemic form of anticoagulation to prevent thrombosis of the circuit. However, if a patient develops heparin-induced thrombocytopenia (HIT), an alternative anticoagulant would be required while the patient is maintained on ECMO. Unfortunately, the pharmacokinetic changes induced by ECMO and critical illness may potentially affect optimal drug dosing...
June 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28632418/therapeutic-monitoring-of-unfractionated-heparin-trials-and-tribulations
#2
Israfil Baluwala, Emmanuel Favaloro, Leonardo Pasalic
Heparin is one of the oldest biological medicines with an established role in prevention and treatment of arterial and venous thromboembolism. Published therapeutic ranges for unfractionated heparin (UFH) mostly precede the large increase in the number of activated partial thromboplastin time (APTT) reagent/instrument combinations that now show wide variability. Areas covered: This paper explores the use of UFH, the development of heparin therapeutic ranges (HTRs), and the strengths and limitations of the methods used to monitor heparin's anticoagulant effect...
June 20, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28628578/neuraxial-anesthesia-in-obstetric-patients-receiving-thromboprophylaxis-with-unfractionated-or-low-molecular-weight-heparin-a-systematic-review-of-spinal-epidural-hematoma
#3
Lisa R Leffert, Heloise M Dubois, Alexander J Butwick, Brendan Carvalho, Timothy T Houle, Ruth Landau
Venous thromboembolism remains a major source of morbidity and mortality in obstetrics with an incidence of 29.8/100,000 vaginal delivery hospitalizations; cesarean delivery confers a 4-fold increased risk of thromboembolism when compared with vaginal delivery. Revised national guidelines now stipulate that the majority of women delivering via cesarean and women at risk for ante- or postpartum venous thromboembolism receive mechanical or pharmacological thromboprophylaxis. This practice change has important implications for obstetric anesthesiologists concerned about the risk of spinal epidural hematoma (SEH) among anticoagulated women receiving neuraxial anesthesia...
July 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28620756/preliminary-data-on-utility-of-subcutaneous-unfractionated-heparin-in-patients-with-deep-cerebral-venous-thrombosis
#4
Girish Baburao Kulkarni, Abbas Masoom Mirza, Subasree Ramakrishnan, Veerendrakumar Mustare
Subcutaneous unfractionated heparin (SCUFH) has been proved effective in puerperal cerebral venous thrombosis (CVT), but its efficacy in the more serious form of the disease such as deep CVT patients (DCVT) unreported. We describe the outcomes of 37 (isolated:combined: 11:26) patients of DCVT diagnosed by MRI, treated with SCUFH in a tertiary care stroke unit. It was a prospective observational cohort study using 5000 U of SCUFH every 6 hourly for 10 days with oral Acenocoumarol started on day 7, with monitoring...
June 15, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28615115/circulatory-collapse-in-a-parturient-undergoing-cesarean-delivery-a-diagnostic-dilemma
#5
M M Tawfik, M E Taman, A I Tarbay, M Sayed, K A Awad
Embolic events including thromboembolism, air embolism, and amniotic fluid embolism can cause cardiovascular collapse during cesarean delivery. Differentiation between the three conditions is challenging because they share many of the initial clinical and echocardiographic findings, but an accurate, definitive diagnosis allows the administration of specific therapy that may help in saving the life of the mother and/or the fetus. We report a case of cardiovascular collapse during cesarean delivery under general anesthesia; massive pulmonary thromboembolism was suspected and unfractionated heparin was administered...
May 10, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28594800/-results-of-administering-oral-anticoagulants-for-treatment-of-patients-with-venous-thromboembolic-complications
#6
B S Sukovatykh, A V Sereditskiĭ, V F Muradian, L N Belikov, A M Azarov, O F Gerasimova
The objective of the study was to compare safety and efficacy of rivaroxaban and dabigatran with warfarin in treatment of patients with acute venous thromboembolic complications (VTEC). The authors analysed the results of examining and treating a total of 95 patients presenting with VTEC and randomly divided into three groups. In all groups the initial anticoagulant therapy consisted in unfractionated heparin administered for 5 days, after which the patients followed by switching were switched to a 6-month course of treatment with oral anticoagulants...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28594426/new-developments-in-anticoagulants-past-present-and-future
#7
Jeffrey I Weitz, Job Harenberg
Thrombosis is a leading cause of death and disability worldwide, and anticoagulants are the mainstay of its prevention and treatment. Starting with unfractionated heparin (UFH) and vitamin K antagonists (VKAs) such as warfarin, the choices of anticoagulants have exploded in the past 20 years. With over 90 % subcutaneous bioavailability, no need for coagulation monitoring and dose adjustment, and a lower risk of heparin-induced thrombocytopenia, low-molecular-weight heparin and fondaparinux have replaced UFH for prevention and initial treatment of venous thromboembolism and for secondary prevention in cancer patients...
June 8, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28593681/initial-anticoagulation-in-patients-with-pulmonary-embolism-thrombolysis-unfractionated-heparin-lmwh-fondaparinux-or-doacs
#8
REVIEW
Jenneke Leentjens, Mike Peters, Anne C Esselink, Yvo Smulders, Cornelis Kramers
The initial treatment of hemodynamically stable patients with pulmonary embolism (PE) has dramatically changed since the introduction of low molecular weight heparins (LMWHs). With the recent discovery of the direct oral anticoagulant drugs (DOACs), initial treatment of PE will be simplified even further. In several large clinical trials it has been demonstrated that DOACs are non-inferior to standard therapy for the initial treatment of PE, and because of their practicability they are becoming the agents of first choice...
June 7, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28592259/safety-of-low-molecular-weight-heparin-compared-to-unfractionated-heparin-in-hemodialysis-a-systematic-review-and-meta-analysis
#9
Hind Harrak Lazrak, Émilie René, Naoual Elftouh, Martine Leblanc, Jean-Philippe Lafrance
BACKGROUND: Low molecular weight heparins (LMWH) have been extensively studied and became the treatment of choice for several indications including pulmonary embolism. While their efficacy in hemodialysis is considered similar to unfractionated heparin (UFH), their safety remains controversial mainly due to a risk of bioaccumulation in patients with renal impairment. The aim of this systematic review was to evaluate the safety of LMWH when compared to UFH for extracorporeal circuit (ECC) anticoagulation...
June 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28591361/doppler-velocimetry-in-fetal-rats-exposed-to-enoxaparin-and-unfractionated-heparin-ufh-during-pregnancy
#10
Flavio Renato de Almeida Senefonte, Ricardo Dutra Aydos, Vanessa Marcon de Oliveira, Marco Antonio Costa Bósio, Ernesto Antonio Figueiró-Filho
Purpose: To evaluate the effects of enoxaparin and unfractionated heparin (UFH) administered in prophylactic and therapeutic doses on fetal vessels in healthy pregnant Wistar rats, according to Doppler velocimetry measurements. Methods: Fifty animals were assigned to one of five groups: controls (saline), prophylactic and therapeutic enoxaparin (1 and 2 mg/kg/day, respectively), and prophylactic and therapeutic UFH (72 and 400 UI/kg/day, respectively). Uterine horns were examined by ultrasound for identification of live fetuses...
May 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28587360/the-value-of-sonoclot-detection-technology-to-guide-the-clinical-medication-of-the-perioperative-anticoagulation-and-antiplatelet-therapy-in-patients-with-acute-myocardial-infarction-undergoing-emergent-pci
#11
Wu-Xiao Yang, Chun-Lin Lai, Fu-Heng Chen, Ji-Rong Wang, You-Rui Ji, Dong-Xia Wang
The value of Sonoclot detection technology to guide the clinical medication of the perioperative anticoagulation and antiplatelet therapy in patients with acute myocardial infarction (AMI) undergoing emergent percutaneous coronary intervention (PCI) was estimated. One hundred and twenty-eight patients were randomly divided into control group and observation group with 64 cases in each group. Control group adopted routine blood coagulation indexes, including prothrombin time, activated partial thromboplastin time, fibrinogen and plasma thrombin time, platelet count and platelet aggregation turbidity analysis; observation group adopted Sonoclot detection technology, including activated clotting time, coagulation rate and platelet function...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28583423/postoperative-bleeding-after-change-in-heparin-supplier-a-cardiothoracic-center-experience
#12
Mirela Bojan, Andreas Fischer, Ashok Narayanasamy, Paul Yea, Eleanor Dunnett, Andrea Kelleher
OBJECTIVE: Unfractionated heparin is a mixture of glycosaminoglycans with different pharmacologic and pharmacokinetic properties. The literature suggests that blood loss after cardiac surgery is related to both elevated postoperative heparin concentrations and the potency of different heparin brands. DESIGN: An audit of the observed increase in the incidence of cardiac surgery-related bleeding after change in heparin supplier. Patient characteristics were compared between groups before and after a change in heparin brands...
February 16, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28581998/controversies-in-the-management-of-st-elevation-myocardial-infarction-thrombin-inhibition
#13
REVIEW
Neeraj Shah, David Cox
Anticoagulation is essential in patients with ST elevation myocardial infarction (STEMI) to prevent further thrombosis and to maintain patency of the infarct-related artery after reperfusion. The various anticoagulant medications available for use in patients with STEMI include unfractionated heparin (UFH), low-molecular-weight heparin, fondaparinux, and bivalirudin, a direct thrombin inhibitor. The authors review the current anticoagulation strategies for patients with STEMI undergoing primary percutaneous coronary intervention (PCI), fibrinolysis, or no reperfusion...
October 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28579397/meta-analysis-of-heparin-therapy-for-preventing-venous-thromboembolism-in-acute-spinal-cord-injury
#14
REVIEW
Yang Liu, Hong Xu, Feifei Liu, Zenghui Lv, Shunli Kan, Guangzhi Ning, Shiqing Feng
OBJECTIVE: Venous thromboembolism (VTE) is a frequent complication in patients with acute spinal cord injury (SCI) and may have serious consequences. This study aimed to assess the efficacy and safety of heparin and low-molecular-weight heparin (LMWH) venous thromboprophylaxis in patients with acute SCI. METHODS: PubMed, Web of Science, EMBASE and the Cochrane library were searched from January 1980 to August 2016. The primary outcome was the incidence of VTE. Secondary outcomes included the incidences of Deep-vein thrombosis (DVT), pulmonary embolism (PE) and major bleeding...
June 1, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28576266/safety-and-tolerability-of-transitioning-from-cangrelor-to-ticagrelor-in-patients-who-underwent-percutaneous-coronary-intervention
#15
Hisham A Badreldin, Danielle Carter, Bryan M Cook, Arman Qamar, Muthiah Vaduganathan, Deepak L Bhatt
The 3 phase 3 CHAMPION (Cangrelor vs Standard Therapy to Achieve Optimal Management of Platelet Inhibition) trials collectively demonstrated the safety of transitioning from cangrelor, a potent, parenteral rapidly-acting P2Y12 inhibitor, to clopidogrel in patients who underwent percutaneous coronary intervention (PCI). However, variation in timing of therapy, site-specific binding, and drug half-lives may theoretically complicate switching to other oral P2Y12 inhibitors. Since regulatory approval, limited data are available regarding the "real-world" safety and tolerability of transitioning to these more potent oral P2Y12 antagonists...
May 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28571631/maternal-and-fetal-outcomes-of-anticoagulation-in-pregnant-women-with%C3%A2-mechanical-heart%C3%A2-valves
#16
Zachary L Steinberg, Clara P Dominguez-Islas, Catherine M Otto, Karen K Stout, Eric V Krieger
BACKGROUND: Anticoagulation for mechanical heart valves during pregnancy is essential to prevent thromboembolic events. Each regimen has drawbacks with regard to maternal or fetal risk. OBJECTIVES: This meta-analysis sought to estimate and compare the risk of adverse maternal and fetal outcomes in pregnant women with mechanical heart valves who received different methods of anticoagulation. METHODS: Studies were identified using a Medline search including all publications up to June 5, 2016...
June 6, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28552474/anticoagulation-therapy-in-neonates-children-and-adolescents
#17
Michele Hepponstall, Anthony Chan, Paul Monagle
Anticoagulation of neonates, children and adolescents remains an important part of clinical care for many individuals. There are different options for anticoagulation, each with their own advantages and disadvantages and selection of an appropriate anticoagulation regime for the specific condition should be judicious. This is in part because age related differences in the coagulation systems exist that mean that the pharmacokinetics and pharmacodynamics of anticoagulation drugs vary across the pediatric spectrum in addition to being distinct from adults...
May 13, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28543770/the-comparative-safety-of-abciximab-versus-eptifibatide-in-patients-on-dialysis-undergoing-percutaneous-coronary-intervention-insights-from-the-blue-cross-blue-shield-of-michigan-cardiovascular-consortium-bmc2
#18
Devraj Sukul, Milan Seth, Theodore Schreiber, George Hanzel, Akshay Khandelwal, Louis A Cannon, Thomas A Lalonde, Hitinder S Gurm
OBJECTIVES: We sought to evaluate the patterns of use and outcomes associated with eptifibatide and abciximab administration among dialysis patients who underwent percutaneous coronary intervention (PCI). BACKGROUND: Contraindicated medications are frequently administered to dialysis patients undergoing PCI often resulting in adverse outcomes. Eptifibatide is a glycoprotein IIb/IIIa inhibitor that is often used during PCI and is contraindicated in dialysis. METHODS: We included dialysis patients who underwent PCI from January 2010 to September 2015 at 47 hospitals in Michigan...
May 22, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28543543/cardiac-implantable-electronic-device-hematomas-risk-factors-and-effect-of-prophylactic-pressure-bandaging
#19
Youlin Koh, Nicholas E Bingham, Natalie Law, Dustin Le, Justin A Mariani
BACKGROUND: Cardiac implantable electronic device (CIED) hematomas are associated with many adverse outcomes. We examined the incidence and risk factors associated with hematoma formation post-CIED implantation, and explored the preventative effect of prophylactic pressure bandaging (PPB) in a large tertiary center. METHODS: 1,091 devices were implanted during October 2011-December 2014. Clinically significant hematomas (CSH) were those that necessitated prolonged admission, including those due to reoperation, and clinically suspicious hematomas were swellings noted by medical/nursing staff...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28538627/early-heparin-administration-after-tbi-prolonged-cognitive-recovery-associated-with-reduced-cerebral-edema-and-neutrophil-sequestration
#20
Katsuhiro Nagata, Kevin D Browne, Yujin Suto, Kenichiro Kumasaka, John Cognetti, Victoria E Johnson, Joshua Marks, Douglas H Smith, Jose L Pascual
BACKGROUND: Early administration of unfractionated heparin (UFH) after TBI reduces early in vivo circulating leukocytes (LEU) in peri-injury penumbral brain tissue, enhancing cognitive recovery 2 days after injury. It remains unclear how long this effect lasts and if this is related to persistently accumulating LEU in penumbral brain tissue. We hypothesized that UFH reduces LEU brain tissue sequestration resulting in prolonged cognitive recovery. METHODS: CD1 male mice underwent either TBI by controlled cortical impact (CCI) or sham craniotomy...
May 22, 2017: Journal of Trauma and Acute Care Surgery
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