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Narayan Balaji, Suresh P Sulochana, Neeraj Kumar Saini, Siva Kumar A, Ramesh Mullangi
A simple, selective and reliable LC-MS/MS method was developed and validated for the simultaneous quantitation of darolutamide diastereomers (diastereomer-1 and diastereomer-2) and its active metabolite i. e. ORM-15341 in mice plasma using warfarin as an internal standard (IS) as per the regulatory guidelines. Plasma samples were extracted by liquid-liquid extraction and the chromatographic separation was achieved on a Chiralpak IA column with an isocratic mobile phase 5 mM ammonium acetate:absolute alcohol (20:80, v/v) at a flow rate of 1...
March 20, 2018: Drug Research
Megan Z Roberts, G Eric Gaskill, Julie Kanter-Washko, T Rogers Kyle, Brittany C Jones, Nicole M Bohm
Patients with sickle cell disease (SCD) experience initial and recurrent venous thromboembolism (VTE) more commonly and at a younger age than the general population, and it confers a higher mortality for patients with SCD. However, limited evidence is available to guide anticoagulant use for VTE treatment in this population. The primary objective of this study is to characterize the effectiveness and safety of direct oral anticoagulants (DOAC) and warfarin for VTE treatment among patients with SCD. This single-center retrospective study includes adult patients with SCD who were diagnosed with VTE...
March 19, 2018: Journal of Thrombosis and Thrombolysis
Tejas K Patel, Parvati B Patel
PURPOSE: The aim of this study was to estimate the prevalence of mortality among patients due to adverse drug reactions that lead to hospitalisation (fatal ADRAd ), to explore the heterogeneity in its estimation through subgroup analysis of study characteristics, and to identify system-organ classes involved and causative drugs for fatal ADRAd . METHODS: We identified prospective ADRAd -related studies via screening of the PubMed and Google Scholar databases with appropriate key terms...
March 19, 2018: European Journal of Clinical Pharmacology
Daniele Pastori, José Miguel Rivera-Caravaca, María Asunción Esteve-Pastor, Vanessa Roldán, Francisco Marín, Pasquale Pignatelli, Francesco Violi, Gregory Y H Lip
BACKGROUND: Two risk scores have been developed to predict composite outcomes in atrial fibrillation (AF): the 2MACE and TIMI-AF scores. The aim of this study was to compare the predictive ability of these scores in 2 separate warfarin-treated cohorts (one 'real world', one clinical trial) of AF patients.Methods and Results:The 2MACE and TIMI-AF scores were calculated in the 'real-world' ATHERO-AF cohort (n=907), and in the randomized controlled AMADEUS trial (n=2,265). Endpoints were major adverse cardiovascular events (MACEs), net clinical outcomes (NCO) and a combination of them, namely "clinically relevant events" (CREs)...
March 16, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
Yajuan Lv, Yong Hou, Bo Pan, Yuwan Ma, Paiyun Li, Lili Yu, Deguo Xu, Juanjuan Song, Heli Shang, Hongyan Wang, Yuan Tian
The risk of venous thrombosis and mortality associated with central catheter (PICC/CICC) for malignant tumor patients is not definite. So, we carried out a systematic review and meta-analysis to evaluate it. Among patients with comparing PICC with CICC, odds ratio (OR) or risk ratio (RR) was calculated with a random effect model meta-analysis. The result of the stratification analysis of 7 studies (PICC vs CICC) supported the theory that CICCs were associated with a decrease in the odds ratio of thrombosis compared with PICCs...
February 23, 2018: Oncotarget
Mathieu Kerneis, C Michael Gibson, Gerald Chi, Roxana Mehran, Fahad AlKhalfan, Usama Talib, Seyedmahdi Pahlavani, Mahshid Mir, Christoph Bode, Jonathan L Halperin, Tarek Nafee, Eric D Peterson, Freek W A Verheugt, Peter Wildgoose, Martin van Eickels, Gregory Y H Lip, Keith A A Fox, Marc Cohen
OBJECTIVES: This study sought to assess whether there were significant interactions of procedural access strategies and lesion characteristics with bleeding and ischemic events among atrial fibrillation (AF) patients anticoagulated with rivaroxaban or warfarin following a percutaneous coronary intervention. BACKGROUND: Among stented AF patients, the impact of procedural access strategies or lesion characteristics on antithrombotic safety and efficacy outcomes is unclear...
March 8, 2018: JACC. Cardiovascular Interventions
Hisao Otsuki, Junichi Yamaguchi, Kazuho Kamishima, Hiroyuki Arashi, Nobuhisa Hagiwara
Previous reports have focused on cardiovascular and bleeding events in patients with atrial fibrillation (AF) undergoing percutaneous coronary intervention (PCI). However, antithrombotic treatment strategies and clinical outcomes after second-generation drug-eluting stents (DES) implantation in AF patients remain to be determined. We enrolled 244 consecutive AF patients treated with second-generation DES. The study population was derived from multi-center AF registry (including 8 centers in Japan) from 2010 to 2012...
March 16, 2018: Heart and Vessels
Peter Wæde Hansen, Thomas S G Sehested, Emil Loldrup Fosbøl, Christian Torp-Pedersen, Lars Køber, Charlotte Andersson, Gunnar H Gislason
AIM: Warfarin is a cornerstone for the prevention of thromboembolism in atrial fibrillation (AF), and several efforts have been taken to increase its usage and safety, including risk stratification schemes. Our aim was to investigate the temporal trends in initiation of warfarin and its effects on incidence of bleeding and thromboembolism in patients with new-onset atrial fibrillation 1996-2011. METHODS: All patients with a first-time diagnosis of non-valvular atrial fibrillation were identified from nationwide administrative registries...
2018: PloS One
Amer Afaneh, Jennifer Ford, Jenna Gharzeddine, Alexandre Mazar, R David Hayward, Joseph Buck
OBJECTIVE: To determine the likelihood that head injured patients on Warfarin with a negative initial head CT will have a positive repeat head CT. A retrospective chart review of our institution's trauma registry was performed for all patients admitted for blunt head trauma and on Warfarin anti-coagulation from January 2009 to April 2014. Inclusion criteria included patients over 18 years of age with initial GCS ≥ 13, INR greater than 1.5 and negative initial head CT. Initial CT findings, repeat CT findings and INR were recorded...
March 15, 2018: BMC Research Notes
So-Young Kim, Drew R Jones, Ji-Yeon Kang, Chul-Ho Yun, Grover P Miller
Coumadin (R/S-warfarin) metabolism plays a critical role in patient response to anticoagulant therapy. Several cytochrome P450s oxidize warfarin into R/S-6-, 7-, 8-, 10, and 4'-hydroxywarfarin that can undergo subsequent glucuronidation by UDP-glucuronosyltransferases (UGTs); however, current studies on recombinant UGTs cannot be adequately extrapolated to microsomal glucuronidation capacities for the liver. Herein, we estimated the capacity of the average human liver to glucuronidate hydroxywarfarin and identified UGTs responsible for those metabolic reactions through inhibitor phenotyping...
March 15, 2018: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
Sylvie Perreault, Payman Shahabi, Robert Côté, Stéphanie Dumas, Étienne Rouleau-Mailloux, Yassamin Feroz Zada, Sylvie Provost, Ian Mongrain, Marc Dorais, Thao Huynh, Simon Kouz, Ariel Diaz, Mark Blostein, Simon de Denus, Jacques Turgeon, Jeffrey Ginsberg, Jacques Lelorier, Lyne Lalonde, Lambert Busque, Jeannine Kassis, Mario Talajic, Jean-Claude Tardif, Marie-Pierre Dubé
BACKGROUND: Over- and under-coagulation with warfarin is associated with hemorrhagic and thromboembolic events, respectively. Genetic and clinical factors affect warfarin response, and the causes of this variability remain unclear. We present descriptive statistics and test for predictors of poor anticoagulation control. METHODS: The Quebec Warfarin Cohort (QWC) comprises 1,059 new warfarin users, with prospective follow up using telephone questionnaires every 3 months for one year, and using healthcare administrative databases (RAMQ and Med-Echo) for 5-year prior to cohort entry and up to 10-years following active patient participation...
March 15, 2018: Clinical Cardiology
Jing Li Huang, Theo A Woehrle, Pat Conway, Catherine A McCarty, Madeline M Eyer, Steven D Eyer
PURPOSE: In 2007, Essentia Health St. Mary's Medical Center (SMMC), a Level II trauma center in northeastern Minnesota, implemented a protocol for patients who presented with blunt head trauma and were receiving warfarin for anticoagulation. The purpose of this study was to determine the incidence and risk factors of early delayed, warfarin-associated intracranial hemorrhage (ICH). METHODS: Adult patients with signs and symptoms of head injury on warfarin who were admitted by protocol to SMMC between March 2007 and June 2015 were included...
March 14, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
Yu Meng, FangGen Lu, Lin Shi, MeiChu Cheng, Jie Zhang
RATIONALE: The use of anticoagulants is a contributor to gastrointestinal (GI) bleeding. Most bleeding patients on anticoagulant therapy such as warfarin commonly have basic lesions existing in their GI mucosa. PATIENT CONCERNS: We report a case of major GI bleeding following the use of anticoagulants in a patient with hookworm infection. DIAGNOSES: The patient was diagnosed with nephrotic syndrome with pulmonary embolism. INTERVENTIONS: He was treated with anticoagulants and suffered from acute major GI bleeding during the treatment...
March 2018: Medicine (Baltimore)
Geoffrey D Barnes, Erin Mouland
Peri-procedural management of oral anticoagulants can be complex and confusing for many providers. It involves a careful balance of a patient's thromboembolic risk and bleeding risk. For every patient chronically taking an oral anticoagulant who will be undergoing an elective procedure, a four step approach may be considered when creating a plan for the oral anticoagulant.(Writing Group M, 20161 ) Does the oral anticoagulant need to stop for the procedure?(Periprocedural Management of Anticoagulation Writing C, Doherty JU, Gluckman TJ, et al...
March 10, 2018: Progress in Cardiovascular Diseases
Hirosuke Yamaji, Takashi Murakami, Kazuyoshi Hina, Shunichi Higashiya, Hiroshi Kawamura, Masaaki Murakami, Shigeshi Kamikawa, Satoshi Hirohata, Shozo Kusachi
BACKGROUND: Different target activated clotting times (ACTs) during atrial fibrillation (AF) ablation have been proposed. Moreover, relationships between initial bolus dose of heparin at the start of AF ablation in patients receiving edoxaban anticoagulation therapy and ACT are unclear. METHODS: Patients who received anticoagulation with uninterrupted warfarin (control; n = 120) or interrupted edoxaban (n = 120) on the morning of day of ablation were studied...
March 13, 2018: Journal of Cardiovascular Electrophysiology
John Burn, Munir Pirmohamed
About 1.4 British million people are at risk of strokes due to non-valvular atrial fibrillation (AF) necessitating long-term anticoagulation. The vitamin K antagonist, warfarin, has a long half-life and narrow therapeutic range necessitating regular monitoring and is a common cause of iatrogenic hospital admission. Direct-acting oral anticoagulants (DOACs), dabigatran, rivaroxaban, apixaban and edoxaban are not required to have monitoring but are sensitive to changes in renal function and are associated with poorer adherence...
2018: Open Heart
Martijn J Schuemie, George Hripcsak, Patrick B Ryan, David Madigan, Marc A Suchard
Observational healthcare data, such as electronic health records and administrative claims, offer potential to estimate effects of medical products at scale. Observational studies have often been found to be nonreproducible, however, generating conflicting results even when using the same database to answer the same question. One source of discrepancies is error, both random caused by sampling variability and systematic (for example, because of confounding, selection bias, and measurement error). Only random error is typically quantified but converges to zero as databases become larger, whereas systematic error persists independent from sample size and therefore, increases in relative importance...
March 13, 2018: Proceedings of the National Academy of Sciences of the United States of America
Beatrice J Edwards, Xiaotao Zhang, Ming Sun, Holly M Holmes, Leena Ketonen, Nandita Guha, Peter Khalil, Juhee Song, Shelli Kesler, Jay B Shah, Debasish Tripathy, Vicente Valero, Richard E Champlin
OBJECTIVE: To assess cognitive function in older adults undergoing cancer care. MATERIALS AND METHODS: This is a cross-sectional study, in the University of Texas MD Anderson Cancer Center, in older adults undergoing cancer care. Comprehensive geriatric assessments were conducted prior to surgery, chemotherapy or allogeneic stem cell transplantation, at the Program for Healthy Aging from January 1, 2013 through March 31, 2015. Cognitive assessment was conducted through personal and family interview, and the Montreal cognitive assessment (MoCA)...
March 9, 2018: Journal of Geriatric Oncology
Wenke Cheng, Weijun Liu, Bin Li, Dongfang Li
BACKGROUND: Currently, it is considered that atrial fibrillation (AF) is a risk factor for cognitive impairment and dementia, which is independent of stroke. However, the relationship between anticoagulant drugs and cognitive function in patients with atrial fibrillation is unknown. OBJECTIVES: This study aimed to complete a meta-analysis, and investigate the association between Anticoagulant therapy and cognitive impairment in patients undergoing AF. METHODS AND RESULTS: Two investigators systematically searched the Cochrane Library, PubMed, Embase databases and Web of Science for all studies showing associations...
March 2, 2018: Journal of Cardiovascular Pharmacology
Orçun Çiftci, Kerem Can Yılmaz, Atilla Sezgin, Mehmet Bülent Özin, İbrahim Haldun Müderrisoğlu, Mehmet Haberal
OBJECTIVES: Cardiac implantable electrical devices are widely used for patients with advanced heart failure and are usually explanted during orthotopic heart transplant. However, lead fragments and the pulse generator are sometimes left after the procedure. Given the concerns of infectious and thromboembolic complications, their removal is recommended. Herein, we report our experience with cardiac implantable electrical device explantation after orthotopic heart transplant. MATERIALS AND METHODS: We included recipients of heart transplants performed at Başkent University Faculty of Medicine, Department of Cardiovascular Surgery, who underwent lead and pulse generator explantation by manual traction between January 2012 and June 2017...
March 2018: Experimental and Clinical Transplantation
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