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Warfarin reversal

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https://www.readbyqxmd.com/read/29768672/catheter-ablation-for-atrial-fibrillation-on-uninterrupted-direct-oral-anticoagulants-a-safe-approach
#1
V Sawhney, M Shaukat, E Volkova, N Jones, R Providencia, S Honarbakhsh, G Dhillon, A Chow, M Lowe, P Lambiase, M Dhinoja, S Sporton, M J Earley, R J Schilling, R J Hunter
BACKGROUND: Current consensus guidelines suggest DOACs are interrupted peri-procedurally for catheter ablation (CA) of AF. However, this may predispose patients to thromboembolic complications. This study investigates the safety of CA for AF on uninterrupted DOACs compared to uninterrupted warfarin. METHODS: Single centre, retrospective study of consecutive patients undergoing CA for AF. All patients were heparinised prior to trans-septal puncture with a target activated clotting time (ACT) of 300-350 seconds...
May 16, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29766126/factor-viia-administration-in-traumatic-brain-injury-an-aast-mitc-propensity-score-analysis
#2
Sarah Lombardo, D Millar, Gregory J Jurkovich, Raul Coimbra, Ram Nirula
Background: Recombinant factor VIIa (rFVIIa) has been used off-label as an adjunct in the reversal of warfarin therapy and management of hemorrhage after trauma. Only a handful of these reports are rigorous studies, from which results regarding safety and effectiveness have been mixed. There remains no clear consensus as to the role of rFVIIa in traumatic brain injury (TBI). Methods: Eleven level 1 trauma centers provided clinical data and head CT scans of patients with a Glasgow Coma Scale (GCS) score of ≤13 and radiographic evidence of TBI...
2018: Trauma surgery & acute care open
https://www.readbyqxmd.com/read/29753603/direct-oral-anticoagulant-agents-pharmacologic-profile-indications-coagulation-monitoring-and-reversal-agents
#3
REVIEW
Deborah K Rose, Barak Bar
Vitamin K antagonists (VKAs), such as warfarin, have been used for thromboprophylaxis and for the treatment of thromboembolic events in patients with nonvalvular atrial fibrillation for over 60 years. The increasing use of direct oral anticoagulants (DOACs) in recent years has shown greater advantages and safer use over VKA, including reduced bleeding, fewer drug interactions, no food interactions, a quick onset and offset of activity, and predictable dose-response properties. Despite their advantages, there are a couple of major limitations that raise concerns among clinicians, including the need for more coagulation assays to monitor their effects and more specific reversal antidotes in life-threatening circumstances of bleeding...
May 9, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29743176/warfarin-and-vitamin-k-epoxide-reductase-a-molecular-accounting-for-observed-inhibition
#4
Sangwook Wu, Xuejie Chen, Da-Yun Jin, Darrel W Stafford, Lee G Pedersen, Jian-Ke Tie
Vitamin K epoxide reductase (VKOR), an endoplasmic reticulum membrane protein, is the key enzyme for vitamin K-dependent carboxylation, a post-translational modification that is essential for the biological functions of coagulation factors. VKOR is the target of the most widely prescribed oral anticoagulant warfarin. However, the topological structure of VKOR and the mechanism of warfarin's inhibition of VKOR remain elusive. Additionally, it is not clear why warfarin-resistant VKOR mutations identified in patients significantly decrease warfarin's binding affinity, but have only a minor effect on vitamin K binding...
May 9, 2018: Blood
https://www.readbyqxmd.com/read/29710221/what-surgeons-should-know-about-non-vitamin-k-oral-anticoagulants-a-review
#5
Atul Verma, Andrew C T Ha, James T Rutka, Subodh Verma
Importance: Non-vitamin K oral anticoagulants (NOACs) are increasingly prescribed for patients to treat or prevent arterial or venous thromboembolism. The following 4 NOAC agents are approved by the US Food and Drug Administration for clinical use: dabigatran etexilate, apixaban, edoxaban tosylate, and rivaroxaban. A good understanding of these agents' pharmacologic properties is important for surgeons given their marked differences compared with warfarin sodium. This review highlights key practical issues surrounding the use of NOACs in the perioperative setting...
April 18, 2018: JAMA Surgery
https://www.readbyqxmd.com/read/29703468/antidotes-for-the-direct-oral-anticoagulants-what-news
#6
S Galliazzo, M P Donadini, W Ageno
The direct oral anticoagulants (DOACs) are recommended as the first-choice anticoagulants for both stroke prevention in patients with non-valvular atrial fibrillation and the treatment and secondary prevention of venous thromboembolism. DOACs cause bleeding, albeit less than warfarin. Most bleeding complications can be controlled by general reversal strategies and supportive care. However, in case of life-threatening bleeding, or when urgent invasive procedures are needed, a more rapid and thorough reversal may be required...
April 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29687299/anticoagulation-reversal-in-vitamin-k-antagonist-associated-intracerebral-hemorrhage-a-systematic-review
#7
Darae Ko, Zayd Razouki, James Otis, Erika Marulanda-Londoño, Elaine M Hylek
The effect of rapid anticoagulation reversal on mortality and functional outcome in vitamin K antagonist-associated intracerebral hemorrhage (VKA-ICH) is uncertain. Given the approval of idarucizumab for dabigatran reversal and pending approval for andexanet alfa for reversal of factor Xa inhibitors, a systematic appraisal of the effectiveness of reversal for VKA-ICH would provide a bench mark for current practice. We performed PubMed searches and reviewed current guidelines. Using pre-specified inclusion and exclusion criteria, studies were reviewed by two physicians independently...
April 23, 2018: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/29619338/three-versus-four-factor-prothrombin-complex-concentrate-for-the-reversal-of-warfarin-induced-bleeding
#8
Tara Holt, Scott Taylor, Prasad Abraham, Wesley Mcmillian, Serena Harris, James Curtis, Tai Elder
Objective: The objective of this study was to evaluate the effectiveness of 3-factor prothrombin complex concentrate (3F-PCC) compared to 4-factor PCC (4F-PCC) in warfarin-associated bleeding. Methods: This multicenter, retrospective, cohort study analyzed data from patients admitted between May 2011 and October 2014 who received PCC for warfarin-associated bleeding. The primary outcome was the rate of international normalized ratio (INR) normalization, defined as an INR ≤1...
January 2018: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29619276/use-of-anticoagulants-remains-a-significant-threat-to-timely-hip-fracture-surgery
#9
Razvan Taranu, Chelsea Redclift, Patrick Williams, Marina Diament, Anne Tate, Jamie Maddox, Faye Wilson, Will Eardley
Introduction: Hip fracture remains the biggest single source of morbidity and mortality in the elderly trauma population, and any intervention focused on quality improvement and system efficiency is beneficial for both patients and clinicians. Two of the variables contributory to improving care and efficiency are time to theater and length of stay, with the overall goal being to improve care as reflected within the achievement of best practice tariff. One of the biggest barriers to optimizing these variables is preinjury anticoagulation...
2018: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/29619251/spinal-subdural-hematoma-and-ankylosing-spondylitis-case-report-and-review-of-literature
#10
Darian R Esfahani, Harsh P Shah, Mandana Behbahani, Gregory D Arnone, Ankit I Mehta
Introduction: Spinal subdural hematomas are rare, disabling hemorrhages. Ankylosing spondylitis (AS) is a relatively common inflammatory condition of the spine that can progress to a fragile, unstable fusion vulnerable to fracture. While spinal epidural hematomas have been described, subdural hematomas to date have not been reported in AS. In this report, we describe the unique case of a patient on warfarin with AS who developed a spinal subdural hematoma and fracture in the absence of trauma...
2018: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/29606406/management-of-spontaneous-soft-tissue-hemorrhage-secondary-to-anticoagulant-therapy-a-cohort-study
#11
Vincenzo G Menditto, Francesca Fulgenzi, Sirio Lombardi, Anna Dimitriadou, Cinzia Mincarelli, Marzia Rosati, Roberto Candelari, Giovanni Pomponio, Aldo Salvi, Armando Gabrielli
STUDY OBJECTIVE: The optimal management of patients receiving heparin, warfarin or direct anti-coagulant therapy who experience spontaneous, severe, life-threatening soft-tissue hemorrhage (SSTH) is unclear. The purpose of this study is to investigate efficacy and safety of the interventional protocol implemented in our department. METHODS: In this retrospective cohort study, we analyzed data from 80 consecutive patients with SSTH secondary to anticoagulation therapy diagnosed by the appropriate computed tomography scan...
March 23, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29576276/liquid-chromatography-with-alkylammonium-formate-ionic-liquid-mobile-phases-and-fluorescence-detection
#12
Neil D Danielson, Fotouh R Mansour, Ling Zhou, Casey V Connell, Erin M Dotlich, Justin N Gibler, Blake E Norman, Shau Grossman, Wenjun Wei, Ying Zhang
Fluorescence detection of various pharmaceuticals and the amino acid tryptophan (low molecular weight organic compounds) as well as the enzyme lactate dehydrogenase LDH (high molar mass compound) has been studied in aqueous solutions using alkyl ammonium formate ionic liquids as the primary solvent component. It was expected that the high viscosity of such ionic liquid-water mixtures would enhance fluorescence. Pharmaceuticals such as riboflavin and naproxen showed no such enhancement in the presence of ethylammonium formate (EAF) or isopropylammonium formate (IPAF) but the fluorescence of warfarin was substantially enhanced by a factor of 4 with 80% EAF and a factor of 7 with 70% IPAF...
March 14, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29561270/low-dose-prothrombin-complex-concentrate-in-patients-with-left-ventricular-assist-devices
#13
Caitlin S Brown, Wesley R Zemrak, Kaitlin J Dyer, Stephen Rolfe
Left ventricular assist devices (LVADs) have become an important advancement for patients with end-stage heart failure. Left ventricular assist devices come with the risk of stroke and pump thrombosis, and to mitigate these risks, anticoagulation is given to these patients. With anticoagulation comes increased bleeding risk, and urgent reversal may be necessary. Reports have shown that the risk of thrombosis with prothrombin complex concentrate (PCC) does exist, especially in patients with baseline risk factors for thrombosis...
March 20, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29510892/evaluation-of-fixed-dose-four-factor-prothrombin-complex-concentrate-for-emergent-warfarin-reversal-in-patients-with-intracranial-hemorrhage
#14
Rachael Scott, Brian Kersten, Jeanne Basior, Megan Nadler
BACKGROUND: Different strategies exist for dosing four-factor prothrombin complex concentrate (PCC4) for international normalized ratio (INR) reversal in the setting of life-threatening bleeding. Fixed doses ranging from 1000 IU to 1750 IU have demonstrated efficacy similar to weight-based dosing, however, few studies look exclusively at intracranial hemorrhage (ICH). OBJECTIVE: Our aim was to evaluate whether a fixed dose of 1000 IU of PCC4 achieves INR reversal similar to weight-based dosing in patients with ICH who were anticoagulated with warfarin...
March 3, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29507024/spontaneous-splenic-rupture-due-to-rivaroxaban
#15
Vinayak Nagaraja, Greg Cranney, Virag Kushwaha
In the prevention and treatment of thromboembolic disease, novel oral anticoagulants have emerged as alternatives to warfarin. A major challenge continues to be the reversal of their anticoagulant effect in the case of life-threatening haemorrhagic complications. We report a case of spontaneous splenic rupture treated by splenic artery embolisation in a 77-year-old woman who was anticoagulated with rivaroxaban.
March 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29498942/activated-prothrombin-complex-concentrate-versus-4-factor-prothrombin-complex-concentrate-for-vitamin-k-antagonist-reversal
#16
A Shaun Rowe, Scott K Dietrich, John W Phillips, Kaci E Foster, Joshua R Canter
OBJECTIVES: To compare the international normalized ratio normalization efficacy of activated prothrombin complex concentrates and 4-factor prothrombin complex concentrates and to evaluate the thrombotic complications in patients treated with these products for warfarin-associated hemorrhage. DESIGN: Retrospective, Multicenter Cohort. SETTING: Large, Community, Teaching Hospital. PATIENTS: Patients greater than 18 years old and received either activated prothrombin complex concentrate or 4-factor prothrombin complex concentrate for the treatment of warfarin-associated hemorrhage...
June 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29490916/comparing-intracerebral-hemorrhages-associated-with-direct-oral-anticoagulants-or-warfarin
#17
Ryota Kurogi, Kunihiro Nishimura, Michikazu Nakai, Akiko Kada, Satoru Kamitani, Jyoji Nakagawara, Kazunori Toyoda, Kuniaki Ogasawara, Junichi Ono, Yoshiaki Shiokawa, Toru Aruga, Shigeru Miyachi, Izumi Nagata, Shinya Matsuda, Shinichi Yoshimura, Kazuo Okuchi, Akifumi Suzuki, Fumiaki Nakamura, Daisuke Onozuka, Keisuke Ido, Ai Kurogi, Nobutaka Mukae, Ataru Nishimura, Koichi Arimura, Takanari Kitazono, Akihito Hagihara, Koji Iihara
OBJECTIVES: This cross-sectional survey explored the characteristics and outcomes of direct oral anticoagulant (DOAC)-associated nontraumatic intracerebral hemorrhages (ICHs) by analyzing a large nationwide Japanese discharge database. METHODS: We analyzed data from 2,245 patients who experienced ICHs while taking anticoagulants (DOAC: 227; warfarin: 2,018) and were urgently hospitalized at 621 institutions in Japan between April 2010 and March 2015. We compared the DOAC- and warfarin-treated patients based on their backgrounds, ICH severities, antiplatelet therapies at admission, hematoma removal surgeries, reversal agents, mortality rates, and modified Rankin Scale scores at discharge...
March 27, 2018: Neurology
https://www.readbyqxmd.com/read/29472508/false-prolongation-of-international-normalized-ratio-associated-with-daptomycin
#18
Susan E Smith, Kelli A Rumbaugh
PURPOSE: Persistent elevation of prothrombin time (PT) and International Normalized Ratio (INR) values in a patient receiving daptomycin is reported. SUMMARY: A morbidly obese 51-year-old man was hospitalized for evaluation for surgical intervention for gallstone pancreatitis and biliary obstruction. Previously prescribed warfarin therapy was withheld due to suspected coagulopathy and an elevated INR (5.1), and warfarin reversal was initiated. After undergoing partial cholecystectomy on hospital day 6, the patient developed sepsis and was treated with i...
March 1, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29456085/what-is-the-role-of-reversal-agents-in-the-management-of-emergency-department-patients-with-dabigatran-associated-hemorrhage
#19
Bryan D Hayes, Michael E Winters, Steve B Rosenbaum, Mohannad F Allehyani, Gary M Vilke
BACKGROUND: In 2010, the U.S. Food and Drug Administration (FDA) approved dabigatran as the first non-warfarin oral anticoagulant for use in the United States. At the time of FDA approval, there was no antidote or effective treatment for dabigatran-induced hemorrhage. In 2015, the FDA approved idarucizumab for the treatment of dabigatran-induced hemorrhage. The purpose of this clinical practice statement is to evaluate the role of select reversal agents in the management of patients with dabigatran-associated bleeding...
April 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29449120/bilateral-phlegmasia-cerulea-dolens-after-warfarin-reversal-for-acute-rectal-bleeding-a-case-report
#20
Burr Fong, Daniel Novak, Michael Dalley, Gregory Alfred
BACKGROUND: Deep vein thrombosis (DVT) is a common disease that is diagnosed in approximately 1 in 1000 adults annually. Extensive DVT can lead to life- or limb-threatening diagnoses such as phlegmasia cerulea dolens (PCD), phlegmasia alba dolens, and venous gangrene. PCD, also known as massive iliofemoral venous thrombosis, is rare, and a severe complication of DVT. CASE REPORT: We report a case of a 94-year-old bedridden woman with past medical history of dementia, hypertension, pulmonary embolism, DVT, and atrial fibrillation...
April 2018: Journal of Emergency Medicine
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