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Sökning: WFRF:(Verheugt Freek) > Xavier Denis

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1.
  • Bahit, M. Cecilia, et al. (författare)
  • Regional variation in clinical characteristics and outcomes in patients with atrial fibrillation : Findings from the ARISTOTLE trial
  • 2020
  • Ingår i: International Journal of Cardiology. - : ELSEVIER IRELAND LTD. - 0167-5273 .- 1874-1754. ; 302, s. 53-58
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Variation in patient characteristics and practice patterns may influence outcomes at a regional level.Methods: We assessed differences in demographics, practice patterns, outcomes, and the effect of apixaban compared with warfarin in ARISTOTLE (n = 18,201) by prespecified regions: North America, Latin America, Europe, and Asia Pacific. The primary outcomes were stroke/systemic embolism and major bleeding.Results: Compared with other regions, patients from Asia Pacific were younger, more women were enrolled in Latin America. Coronary artery disease was more prevalent in Europe and Asia Pacific had the highest rate of prior stroke and renal impairment. Over 50% of patients in North America were taking >= 9 drugs at randomization, compared with 10% in Latin America. North America had the highest rates of temporary study drug discontinuation and procedures. Time in therapeutic range (INR 2.0-3.0) on warfarin was highest in North America and lowest in Asia Pacific. After adjustment and compared with Europe, patients in Asia Pacific had 2-fold higher risk of stroke/systemic embolism and 3-fold higher risk of intracranial hemorrhage. Patients in Latin America had 2-fold increased risk of all-cause death compared with Europe. The benefits of apixaban compared with war-farin were consistent across regions; there was a pronounced reduction in major bleeding in patients from Asia Pacific compared with other regions (p-interaction = 0.03).Conclusions: Patients with AF enrolled in prespecified regions in ARISTOTLE had differences in clinical baseline characteristics and practice patterns. After adjustment, patients in Asia Pacific and Latin America had worse outcomes than patients from other regions. The relative benefits of apixaban compared with warfarin were consistent across regions with an even greater treatment effect in the reduction of bleeding in patients from Asia Pacific. 
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2.
  • Focks, Jeroen Jaspers, et al. (författare)
  • Polypharmacy and effects of apixaban versus warfarin in patients with atrial fibrillation : post hoc analysis of the ARISTOTLE trial
  • 2016
  • Ingår i: BMJ-BRITISH MEDICAL JOURNAL. - : BMJ. - 1756-1833. ; 353
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE To determine whether the treatment effect of apixaban versus warfarin differs with increasing numbers of concomitant drugs used by patients with atrial fibrillation. DESIGN Post hoc analysis performed in 2015 of results from ARISTOTLE (apixaban for reduction in stroke and other thromboembolic events in atrial fibrillation)-a multicentre, double blind, double dummy trial that started in 2006 and ended in 2011. PARTICIPANTS 18 201 ARISTOTLE trial participants. INTERVENTIONS In the ARISTOTLE trial, patients were randomised to either 5 mg apixaban twice daily (n=9120) or warfarin (target international normalised ratio range 2.0-3.0; n=9081). In the post hoc analysis, patients were divided into groups according to the number of concomitant drug treatments used at baseline (0-5, 6-8, >= 9 drugs) with a median follow-up of 1.8 years. MAIN OUTCOME MEASURES Clinical outcomes and treatment effects of apixaban versus warfarin (adjusted for age, sex, and country). RESULTS Each patient used a median of six drugs (interquartile range 5-9); polypharmacy (>= 5 drugs) was seen in 13 932 (76.5%) patients. Greater numbers of concomitant drugs were used in older patients, women, and patients in the United States. The number of comorbidities increased across groups of increasing numbers of drugs (0-5, 6-8, >= 9 drugs), as did the proportions of patients treated with drugs that interact with warfarin or apixaban. Mortality also rose significantly with the number of drug treatments (P<0.001), as did rates of stroke or systemic embolism (1.29, 1.48, and 1.57 per 100 patient years, for 0-5, 6-8, and >= 9 drugs, respectively) and major bleeding (1.91, 2.46, and 3.88 per 100 patient years, respectively). Relative risk reductions in stroke or systemic embolism for apixaban versus warfarin were consistent, regardless of the number of concomitant drugs (P-interaction=0.82). A smaller reduction in major bleeding was seen with apixaban versus warfarin with increasing numbers of concomitant drugs (P-interaction=0.017). Patients with interacting (potentiating) drugs for warfarin or apixaban had similar outcomes and consistent treatment effects of apixaban versus warfarin. CONCLUSIONS In the ARISTOTLE trial, three quarters of patients had polypharmacy; this subgroup had an increased comorbidity, more interacting drugs, increased mortality, and higher rates of thromboembolic and bleeding complications. In terms of a potential differential response to anticoagulation therapy in patients with atrial fibrillation and polypharmacy, apixaban was more effective than warfarin, and is at least just as safe.
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3.
  • Garcia, David, et al. (författare)
  • Management and clinical outcomes in patients treated with apixaban versus warfarin undergoing procedures
  • 2014
  • Ingår i: Blood. - : American Society of Hematology. - 0006-4971 .- 1528-0020. ; 124:25, s. 3692-3698
  • Tidskriftsartikel (refereegranskat)abstract
    • Using data from ARISTOTLE, we describe the periprocedural management of anticoagulation and rates of subsequent clinical outcomes among patients chronically anticoagulated with warfarin or apixaban. We recorded whether (and for how long) anticoagulant therapy was interrupted pre-procedure; whether bridging therapy was used; and the proportion of patients who experienced important clinical outcomes during the 30 days post-procedure. Of 10,674 procedures performed during follow-up in 5924 patients, 9260 were included in this analysis. Anticoagulant treatment was not interrupted pre-procedure 37.5% of the time. During the 30 days post-procedure, stroke or systemic embolism occurred after 16/4624 (0.35%) procedures among apixaban-treated patients and 26/4530 (0.57%) procedures among warfarin-treated patients (OR 0.601; 95% CI 0.322–1.120). Major bleeding occurred in 74/4560 (1.62%) procedures in the apixaban arm and 86/4454 (1.93%) in the warfarin arm (OR 0.846; 95% CI 0.614–1.166). The risk of death was similar with apixaban (54/4624 [1.17%]) and warfarin (49/4530 [1.08%]) (OR 1.082; 95% CI 0.733–1.598). Among patients in ARISTOTLE, the 30-day post-procedure stroke, death, and major bleeding rates were low and similar in apixaban- and warfarin-treated patients, regardless of whether anticoagulation was stopped beforehand. Our findings suggest that many patients on chronic anticoagulation can safely undergo procedures; some will not require a pre-procedure interruption of anticoagulation. ARISTOTLE ClinicalTrials.gov number (NCT00412984).
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4.
  • Granger, CB, et al. (författare)
  • Clinical events after transitioning from apixaban versus warfarin to warfarin at the end of the Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) trial
  • 2015
  • Ingår i: American Heart Journal. - : Elsevier BV. - 0002-8703 .- 1097-6744. ; 169:1, s. 25-30
  • Tidskriftsartikel (refereegranskat)abstract
    • Background We sought to assess the occurrence of events after blinded study drug discontinuation and transition to open-label vitamin K antagonist (VKA) in ARISTOTLE.Methods At the end of ARISTOTLE, blinded study drug was stopped, and open-label VKA was recommended. For patients completing the trial on blinded study drug, a 2-day bridging period with apixaban or apixaban placebo was recommended (while beginning open-label VKA). Outcomes were assessed during the 30 days after stopping blinded study drug.Results Of the 6,809 patients in the apixaban group and 6,588 in the warfarin group who completed the trial on study drug, there were 21 strokes or systemic emboli (4.02%/year) and 26 major bleeding (4.97%/year) events in the apixaban group (transitioning to VKA) and 5 strokes or systemic emboli (0.99%/year) and 10 major bleeding (1.97%/year) events in the warfarin group (continuing on VKA), with most of the imbalance between groups being after the first week. Similar results were seen in the first 30 days of the trial where warfarin-naive patients starting warfarin had a higher rate of stroke or systemic emboli (5.41%/year) than warfarin-experienced patients (1.42%/year), a pattern not seen when starting apixaban. No similar increase in events with apixaban versus warfarin was seen during temporary or permanent study drug discontinuation during the trial.Conclusions The excess in thrombotic and bleeding events in the apixaban group after study drug discontinuation appears to be related to an increased risk associated with the initiation of a VKA rather than a direct effect of apixaban. Whether >= 2 days of apixaban bridging improves outcomes during VKA transition is unknown and deserves further evaluation.
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5.
  • Washam, Jeffrey B., et al. (författare)
  • Interacting medication use and the treatment effects of apixaban versus warfarin : results from the ARISTOTLE Trial
  • 2019
  • Ingår i: Journal of Thrombosis and Thrombolysis. - : SPRINGER. - 0929-5305 .- 1573-742X. ; 47:3, s. 345-352
  • Tidskriftsartikel (refereegranskat)abstract
    • Warfarin is dependent on multiple hepatic enzymes for metabolism while apixaban is a substrate for P-glycoprotein (P-gp) transport and hepatic CYP3A4 metabolism. The aim of this analysis was to assess the impact of interacting medication use on the treatment effects of apixaban versus warfarin. Outcomes were compared between apixaban and warfarin using Cox proportional hazards modeling according to the use of interacting medications at randomization in ARISTOTLE (n=18,201). Interacting medications for apixaban were identified as combined P-gp and 3A4 inhibitors or inducers while interacting medications for warfarin were defined as those highly probable for warfarin potentiation or inhibition. At randomization, 5547 (30.5%) patients were on an interacting medication, including 2722 on apixaban and 2825 on warfarin. Patients using an interacting medication were more likely to be female, taking aspirin, and have a history of prior bleeding and were less likely to have a prior stroke or transient ischemic attack. No significant differences were observed on the treatment effect of apixaban compared with warfarin in patients on and off interacting medications for outcomes including the primary efficacy outcome of stroke or systemic embolism (P for interaction=0.79) or the primary safety outcome of major bleeding (P for interaction=0.75). Use of interacting medications with anticoagulants occurs often in patients with atrial fibrillation. Despite the potential for altered exposure, interacting medication use was not associated with a significant change in the efficacy or safety of apixaban compared with warfarin in the ARISTOTLE trial.Trial registration ClinicalTrials.gov, NCT00412984
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