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Antiagregantes

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180 papers 0 to 25 followers
By Eduardo Roque Cardiologista com foco em cardiologia hospitalar e cuidados intensivos. Professor de clínica médica.
https://www.readbyqxmd.com/read/28306694/real-world-use-of-ticagrelor-and-prasugrel-in-patients-with-nstemi-undergoing-percutaneous-coronary-intervention
#1
Vincenzo Sucato, Egle Corrado, Carmelo Castellana, Michele Carella, Simona Raso, Giuseppe Coppola, Giuseppe Andolina, Giuseppina Novo, Salvatore Evola, Salvatore Novo
OBJECTIVE: This retrospective observational study sought to describe the safety and efficacy profile of prasugrel and ticagrelor in patients with non-ST-segment elevation myocardial infarction (NSTEMI), who were admitted to the coronary intensive care unit (CICU) and underwent primary percutaneous coronary intervention (PCI). BACKGROUND AND METHODS: Dual antiplatelet therapy is mandatory for all the patients with acute coronary syndrome, who underwent PCI. Our study includes 111 patients with NSTEMI, who underwent PCI, in a maximum time of 72 h after their ischemic event...
March 16, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28249994/duration-of-dual-antiplatelet-therapy-in-acute-coronary-syndrome
#2
REVIEW
Simon John Wilson, David E Newby, Dana Dawson, John Irving, Colin Berry
Despite a large volume of evidence supporting the use of dual antiplatelet therapy in patients with acute coronary syndrome, there remains major uncertainty regarding the optimal duration of therapy. Clinical trials have varied markedly in the duration of therapy, both across and within trials. Recent systematic reviews and meta-analyses suggest that shorter durations of dual antiplatelet therapy are superior because the avoidance of atherothrombotic events is counterbalanced by the greater risks of excess major bleeding with apparent increases in all-cause mortality with longer durations...
March 1, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28279076/triple-antithrombotic-therapy-with-aspirin-p2y12-inhibitor-and-warfarin-after-percutaneous-coronary-intervention
#3
Nathan J Verlinden, James C Coons, Carlo J Iasella, Sandra L Kane-Gill
BACKGROUND: Triple antithrombotic therapy is used in patients who require systemic anticoagulation and undergo percutaneous coronary intervention (PCI) requiring dual antiplatelet therapy. Bleeding with this combination is significant; however, few studies have described outcomes with the use of newer oral P2Y12 inhibitors in this setting. OBJECTIVES: We aimed to compare outcomes among patients prescribed triple therapy with prasugrel or ticagrelor compared to triple therapy with clopidogrel in patients who underwent PCI and required warfarin...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28262344/clopidogrel-prasugrel-or-ticagrelor-use-and-clinical-outcome-in-patients-with-acute-coronary-syndrome-a-nationwide-long-term-registry-analysis-from-2009-to-2014
#4
Safoura Sheikh Rezaei, Angelika Geroldinger, Georg Heinze, Berthold Reichardt, Michael Wolzt
BACKGROUND: The beneficial use of dual antiplatelet therapy (DAPT) with acetylsalicylic acid (ASA) and P2Y12 õinhibitors has been established for patients after acute coronary syndrome (ACS). However, the optimal duration of DAPT is under debate. The aim of the present study was to investigate the long-term utilization and clinical outcome of clopidogrel, prasugrel, and ticagrelor in patients with ACS from 2009 to 2014 in Austria. METHODS: We analysed data from 13 Austrian health insurance funds for the years 2009 to 2014, on 72,676 patients with a hospital discharge diagnosis of ACS...
February 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28267384/comparison-of-p2y12-inhibitors-for-mortality-and-stent-thrombosis-in-patients-with-acute-coronary-syndromes-single-center-study-of-10-793-consecutive-real-world-patients
#5
Rebecca Gosling, Momina Yazdani, Yasir Parviz, Ian R Hall, Ever D Grech, Julian P Gunn, Robert F Storey, Javaid Iqbal
Three oral platelet P2Y12 inhibitors, clopidogrel, prasugrel, and ticagrelor, are available for reducing the risk of cardiovascular death and stent thrombosis in patients with acute coronary syndromes (ACS). We sought to compare the efficacy of these antiplatelet drugs in contemporary practice. Data were collected for 10 793 consecutive ACS patients undergoing coronary angiography at Sheffield, UK (2009-2015). Since prasugrel use was mostly restricted to the STEMI subgroup, clopidogrel and ticagrelor were compared for all ACS patients, and all three agents were compared in the STEMI subgroup...
March 7, 2017: Platelets
https://www.readbyqxmd.com/read/28159767/ticagrelor-reversal-in-vitro-assessment-of-four-haemostatic-agents
#6
Leyla Calmette, Anne-Céline Martin, Bernard Le Bonniec, Diane Zlotnik, Isabelle Gouin-Thibault, Christilla Bachelot-Loza, Pascale Gaussem, Anne Godier
AIM: Management of ticagrelor-induced bleeding is challenging as platelet transfusion is ineffective. An effective strategy is needed. This study aimed to investigate in vitro the efficacy of four haemostatic drugs (HDs), namely recombinant activated factor VII (rFVIIa), fibrinogen concentrate (Fib), tranexamic acid (TXA) and factor XIII concentrate (FXIII) to improve the haemostatic capacity in the presence of ticagrelor. METHODS: Blood was spiked with ticagrelor then supplemented by either HD or control...
February 3, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28242212/out-of-hospital-cardiac-arrest-and-stent-thrombosis-ticagrelor-versus-clopidogrel-in-patients-with-primary-percutaneous-coronary-intervention-under-mild-therapeutic-hypothermia
#7
Gustavo Jiménez-Brítez, Xavier Freixa, Eduardo Flores-Umanzor, Rodolfo San Antonio, Gala Caixal, John Garcia, Marco Hernandez-Enriquez, Rut Andrea, Ander Regueiro, Mónica Masotti, Salvatore Brugaletta, Victoria Martin, Manel Sabaté
BACKGROUND: Out-of-Hospital Cardiac Arrest (OHCA) and mild therapeutic hypothermia (MTH) have been linked to increased risk of Stent Thrombosis (ST) in comatose survivors who undergo percutaneous coronary intervention (PCI). In this sense, there is no formal recommendation about which antiplatelet regimen should be used in patients with acute coronary syndromes (ACS) after OHCA. AIMS: To compare the incidence of probable/definite ST and bleeding events between ticagrelor and clopidogrel, in patients with ACS under MTH after an OHCA...
February 24, 2017: Resuscitation
https://www.readbyqxmd.com/read/27810295/association-of-pcsk9-with-platelet-reactivity-in-patients-with-acute-coronary-syndrome-treated-with-prasugrel-or-ticagrelor-the-pcsk9-react-study
#8
Eliano P Navarese, Michalina Kolodziejczak, Max-Paul Winter, Arman Alimohammadi, Irene M Lang, Antonino Buffon, Gregory Yh Lip, Jolanta M Siller-Matula
BACKGROUND: Circulating proprotein convertase subtilisin/kexin type 9 (PCSK9) enzyme might be associated with increased activation of platelets. We aimed to assess the relationship between PCSK9 levels, platelet reactivity and ischemic outcomes. METHODS: Consecutive ACS patients receiving prasugrel or ticagrelor and undergoing percutaneous coronary intervention (PCI) were enrolled in a prospective, observational study. Adenosine diphosphate (ADP)-induced platelet aggregation was determined by Multiplate Analyzer in the maintenance phase of treatment with prasugrel or ticagrelor...
January 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27815268/relationship-of-platelet-reactivity-with-bleeding-outcomes-during-long-term-treatment-with-dual-antiplatelet-therapy-for-medically-managed-patients-with-non-st-segment-elevation-acute-coronary-syndromes
#9
Jan H Cornel, E Magnus Ohman, Benjamin Neely, Joseph A Jakubowski, Deepak L Bhatt, Harvey D White, Diego Ardissino, Keith A A Fox, Dorairaj Prabhakaran, Paul W Armstrong, David Erlinge, Udaya S Tantry, Paul A Gurbel, Matthew T Roe
BACKGROUND: The relationship between "on-treatment" low platelet reactivity and longitudinal risks of major bleeding dual antiplatelet therapy following acute coronary syndromes remains uncertain, especially for patients who do not undergo percutaneous coronary intervention. METHODS AND RESULTS: We analyzed 2428 medically managed acute coronary syndromes patients from the Targeted Platelet Inhibition to Clarify the Optimal Strategy to Medically Manage Acute Coronary Syndromes (TRILOGY ACS) trial who had serial platelet reactivity measurements (P2Y12 reaction units; PRUs) and were randomized to aspirin+prasugrel versus aspirin+clopidogrel for up to 30 months...
November 4, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28228427/myocardial-infarction-risk-after-discontinuation-of-thienopyridine-therapy-in-the-randomized-dapt-study
#10
Ada C Stefanescu Schmidt, Dean J Kereiakes, Donald E Cutlip, Robert W Yeh, Ralph B D'Agostino, Joseph M Massaro, Wen-Hua Hsieh, Laura Mauri
Background -Thienopyridine plus aspirin beyond one year after coronary stenting (PCI) reduces myocardial infarction (MI) risk and increases bleeding risk compared with aspirin alone. The hazard associated with late thienopyridine discontinuation and risk factors for MI after discontinuation are poorly defined. Methods -In the Dual Antiplatelet Therapy (DAPT) Study, after PCI and 12 months of thienopyridine (clopidogrel or prasugrel) plus aspirin, eligible patients remained on aspirin and were randomized to continued thienopyridine vs...
February 22, 2017: Circulation
https://www.readbyqxmd.com/read/28230176/antithrombotic-therapy-for-patients-with-stemi-undergoing-primary-pci
#11
REVIEW
Francesco Franchi, Fabiana Rollini, Dominick J Angiolillo
Antithrombotic therapy, including antiplatelet and anticoagulant agents, is the cornerstone of pharmacological treatment to optimize clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI). Intravenous anticoagulant drugs available for PPCI include the indirect thrombin inhibitors unfractionated heparin and low-molecular-weight heparin, and the direct thrombin inhibitor bivalirudin. Intravenous antiplatelet drugs mainly include glycoprotein IIb/IIIa inhibitors and the P2Y12-receptor inhibitor cangrelor...
February 23, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28122793/real-world-insights-on-the-initiation-and-treatment-duration-of-oral-antiplatelets-in-acute-coronary-syndromes-a-retrospective-cohort-study
#12
Marc J Claeys, Christophe Beauloye, Suzanne Pourbaix, Peter R Sinnaeve
AIMS: This study is a real world, observational study evaluating the treatment persistence of oral antiplatelet (OAP) therapy during a one-year follow-up in patients after an acute coronary syndrome (ACS). METHODS AND RESULTS: Data on diagnosis, comorbidities, follow-up, OAP treatment, reasons, and decision maker for treatment discontinuation in patients who were discharged from a hospital in Belgium after an ACS between 1 July 2012 and 1 June 2013 were collected by cardiologists from 18 centres, up to 360 days from discharge...
January 24, 2017: European Heart Journal. Cardiovascular Pharmacotherapy
https://www.readbyqxmd.com/read/28203684/crushed-sublingual-versus-oral-ticagrelor-administration-strategies-in-patients-with-unstable-angina-a-pharmacokinetic-pharmacodynamic-study
#13
Piotr Niezgoda, Joanna Sikora, Malwina Barańska, Adam Sikora, Katarzyna Buszko, Emilia Siemińska, Michał Piotr Marszałł, Jolanta M Siller-Matula, Bernd Jilma, Dimitrios Alexopoulos, Tomasz Fabiszak, Jacek Kubica
Oral administration of crushed ticagrelor tablets turned out to be an efficacious method that improves its pharmacokinetics and pharmacodynamics. This strategy, however, is unlikely to eliminate the drug-drug interaction in patients receiving intravenous morphine, as the impairment of the P2Y12 inhibitor absorption related to decreased propulsive motility of the gastro-intestinal tract is the most likely mechanism of interaction. Thus, we designed a pharmacokinetic and pharmacodynamic study setting the feasibility of platelet inhibition with a loading dose of ticagrelor given as crushed tablets sublingually compared with two other ticagrelor loading dose administration strategies: integral tablet given orally and crushed tablet given orally in patients with unstable angina...
February 16, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28202132/comparison-of-platelet-reactivity-in-black-versus-white-patients-with-acute-coronary-syndromes-after-treatment-with-ticagrelor
#14
Michael A Gaglia, Michael J Lipinski, Thibault Lhermusier, Arie Steinvil, Sarkis Kiramijyan, Shreejana Pokharel, Rebecca Torguson, Dominick J Angiolillo, Lars Wallentin, Robert F Storey, Ron Waksman
Ticagrelor, a potent platelet inhibitor, has primarily been studied in white patients. Platelet reactivity among black patients with acute coronary syndrome (ACS) on ticagrelor, however, is unknown. Our objective was to compare platelet reactivity in black versus white patients with ACS treated with ticagrelor. We conducted a prospective, pharmacodynamic study of 29 black patients with ACS treated with ticagrelor. Platelet reactivity was assessed at 1, 4, and 8 hours after a loading dose of ticagrelor 180 mg and at 30 days on a maintenance dose of ticagrelor 90 mg twice daily...
January 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28184261/dual-antiplatelet-therapy-and-non-cardiac-surgery-evolving-issues-and-anesthetic-implications
#15
REVIEW
Jong Wook Song, Sarah Soh, Jae-Kwang Shim
Dual antiplatelet therapy (DAPT) consisting of aspirin plus a P2Y12 inhibitor (clopidogrel, prasugrel, or ticagrelor) is imperative for the treatment of acute coronary syndrome, particularly during the re-endothelialization period after percutaneous coronary intervention (PCI). When patients undergo surgery during this period, the consequences of stent thrombosis are far more serious than those of bleeding complications, except in cases of intracranial surgery. The recommendations for perioperative DAPT have changed with emerging evidence regarding the improved efficacy of non-first-generation drug (everolimus, zotarolimus)-eluting stents (DES)...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28097639/risk-of-bleeding-and-repeated-bleeding-events-in-prasugrel-treated-patients-a-review-of-data-from-the-japanese-prasfit-studies
#16
REVIEW
Masakatsu Nishikawa, Takaaki Isshiki, Takeshi Kimura, Hisao Ogawa, Hiroyoshi Yokoi, Shunichi Miyazaki, Yasuo Ikeda, Masato Nakamura, Yuko Tanaka, Shigeru Saito
Prasugrel is a third-generation thienopyridine that achieves potent platelet inhibition with less pharmacological variability than other thienopyridines. However, clinical experience suggests that prasugrel may be associated with a higher risk of de novo and recurrent bleeding events compared with clopidogrel in Japanese patients undergoing percutaneous coronary intervention (PCI). In this review, we evaluate the risk of bleeding in Japanese patients treated with prasugrel at the doses (loading/maintenance doses: 20/3...
January 17, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28150850/chewing-versus-swallowing-ticagrelor-to-accelerate-platelet-inhibitionin-acute-coronary-syndrome-the-cheers-study-for-the-platis-platelets-and-thrombosis-in-sheba-study-group
#17
Elad Asher, Shir Frydman, Moshe Katz, Ehud Regev, Avi Sabbag, Israel Mazin, Arsalan Abu-Much, Andrew Kukuy, Anna Mazo, Aharon Erez, Anat Berkovitch, Michael Narodistky, Israel Barbash, Amit Segev, Roy Beigel, Shlomi Matetzky
It was the study objective to evaluate whether chewing a 180 mg loading dose of ticagrelor versus an equal dose of traditional oral administration, enhances inhibition of platelet aggregation 1 hour (h) after administering a ticagrelor loading dose in non-ST elevation myocardial infarction (NSTEMI) patients. Dual anti-platelet therapy represents standard care for treating NSTEMI patients. Ticagrelor is a direct acting P2Y12 inhibitor and, unlike clopidogrel and prasugrel, does not require metabolic activation...
February 2, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28089137/a-comparison-of-cangrelor-prasugrel-ticagrelor-and-clopidogrel-in-patients-undergoing-percutaneous-coronary-intervention-a-network-meta-analysis
#18
Peter C Westman, Michael J Lipinski, Rebecca Torguson, Ron Waksman
BACKGROUND: Newer P2Y12 inhibitors have more rapid onset of platelet inhibition compared with clopidogrel, especially the intravenous P2Y12 inhibitor cangrelor. Direct comparisons between cangrelor and oral P2Y12 inhibitors ticagrelor and prasugrel do not exist. Thus, we performed a network meta-analysis to directly and indirectly compare different P2Y12 inhibitors in patients undergoing percutaneous coronary intervention (PCI). METHODS: MEDLINE/PubMed and ClinicalTrials...
March 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28092426/incomplete-reversibility-of-platelet-inhibition-following-prolonged-exposure-to-ticagrelor
#19
A J Gerrits, J A Jakubowski, A Sugidachi, A D Michelson, A L Frelinger
INTRODUCTION: Ticagrelor is described as a reversible P2Y12 antagonist. However, residual platelet inhibition persists after discontinuation of ticagrelor when plasma levels are undetectable. We assessed the reversibility of platelet inhibition by ticagrelor and its active metabolite (T-AM) in comparison with cangrelor and prasugrel's active metabolite (P-AM). METHODS: Whole blood was treated in vitro with ~50% inhibitory concentrations of ticagrelor, T-AM, cangrelor, P-AM and assessed for ADP-stimulated activated GPIIb-IIIa and P-selectin and vasodilator stimulated phosphoprotein (VASP) platelet reactivity index (PRI) before and after 100-fold dilution...
January 16, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28052578/ticagrelor-increased-adenosine-and-cyclic-adenosine-monophosphate-plasma-concentration-compared-with-clopidogrel-in-acute-coronary-syndromes-patients
#20
Xiao-Ye Li, Qi-Bing Wang, Ying Xue, Jia-Hui Chen, Qian-Zhou Lv
Ticagrelor produces a more potent antiplatelet effect than clopidogrel, and inhibits cellular uptake of adenosine, which is associated with several cardiovascular consequences. We aimed to explore the correlation between adenosine and cyclic adenosine monophosphate (cAMP) plasma concentration and antiplatelet effect by clopidogrel or ticagrelor in acute coronary syndrome (ACS) patients receiving dual antiplatelet therapy (DAPT). We conducted a prospective, observational and single-centre cohort study enrolling 68 patients with non-ST-segment elevation ACS from January 2016 to May 2016...
January 4, 2017: Basic & Clinical Pharmacology & Toxicology
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