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Träfflista för sökning "WFRF:(Califf Robert M) ;pers:(Braunwald Eugene)"

Sökning: WFRF:(Califf Robert M) > Braunwald Eugene

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1.
  • Guigliano, Robert P, et al. (författare)
  • Early versus delayed, provisional eptifibatide in acute coronary syndromes.
  • 2009
  • Ingår i: New England Journal of Medicine. - : Massachusetts Medical Society. - 0028-4793 .- 1533-4406. ; 360:21, s. 2176-2190
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Glycoprotein IIb/IIIa inhibitors are indicated in patients with acute coronary syndromes who are undergoing an invasive procedure. The optimal timing of the initiation of such therapy is unknown. Methods We compared a strategy of early, routine administration of eptifibatide with delayed, provisional administration in 9492 patients who had acute coronary syndromes without ST-segment elevation and who were assigned to an invasive strategy. Patients were randomly assigned to receive either early eptifibatide (two boluses, each containing 180 µg per kilogram of body weight, administered 10 minutes apart, and a standard infusion 12 hours before angiography) or a matching placebo infusion with provisional use of eptifibatide after angiography (delayed eptifibatide). The primary efficacy end point was a composite of death, myocardial infarction, recurrent ischemia requiring urgent revascularization, or the occurrence of a thrombotic complication during percutaneous coronary intervention that required bolus therapy opposite to the initial study-group assignment ("thrombotic bailout") at 96 hours. The key secondary end point was a composite of death or myocardial infarction within the first 30 days. Key safety end points were bleeding and the need for transfusion within the first 120 hours after randomization. Results The primary end point occurred in 9.3% of patients in the early-eptifibatide group and in 10.0% in the delayed-eptifibatide group (odds ratio, 0.92; 95% confidence interval [CI], 0.80 to 1.06; P=0.23). At 30 days, the rate of death or myocardial infarction was 11.2% in the early-eptifibatide group, as compared with 12.3% in the delayed-eptifibatide group (odds ratio, 0.89; 95% CI, 0.79 to 1.01; P=0.08). Patients in the early-eptifibatide group had significantly higher rates of bleeding and red-cell transfusion. There was no significant difference between the two groups in rates of severe bleeding or nonhemorrhagic serious adverse events. Conclusions In patients who had acute coronary syndromes without ST-segment elevation, the use of eptifibatide 12 hours or more before angiography was not superior to the provisional use of eptifibatide after angiography. The early use of eptifibatide was associated with an increased risk of non–life-threatening bleeding and need for transfusion.    
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2.
  • Wang, Tracy Y., et al. (författare)
  • Upstream Clopidogrel Use and the Efficacy and Safety of Early Eptifibatide Treatment in Patients With Acute Coronary Syndrome An Analysis From the Early Glycoprotein IIb/IIIa Inhibition in Patients With Non-ST-Segment Elevation Acute Coronary Syndrome (EARLY ACS) Trial
  • 2011
  • Ingår i: Circulation. - 0009-7322 .- 1524-4539. ; 126:7, s. 722-730
  • Tidskriftsartikel (refereegranskat)abstract
    • Background-In the Early Glycoprotein IIb/IIIa Inhibition in Patients with Non-ST-Segment Elevation Acute Coronary Syndrome (EARLY ACS) trial, routine preangiography eptifibatide use was not superior to delayed provisional use but led to more bleeding. This analysis examines efficacy and safety of early eptifibatide in the setting of concurrent upstream clopidogrel use. Methods and Results-In EARLY-ACS, clopidogrel use and timing were determined by treating physicians, but randomization to early eptifibatide versus placebo was stratified by the intent to use upstream clopidogrel. Among 9166 non-ST-elevation acute coronary syndrome patients who underwent coronary angiography, intent to use upstream clopidogrel was declared in 6895 (75%), and 7068 (77%) received upstream clopidogrel. After multivariable adjustment, intended upstream clopidogrel use did not differentially influence the effect of early eptifibatide on the primary end point of 96-hour death/myocardial infarction/recurrent ischemia requiring urgent revascularization/thrombotic bailout (interaction P = 0.988). Early eptifibatide use reduced 30-day death/myocardial infarction among patients with intended upstream clopidogrel (adjusted odds ratio 0.85; 95% confidence interval 0.73 to 0.99) but not among those without intended upstream clopidogrel use (adjusted odds ratio 1.02; 95% confidence interval 0.80 to 1.30). However, the clopidogrel by randomized treatment interaction term was not significant (P = 0.23). Thrombolysis in Myocardial Infarction major bleeding risk was increased with early eptifibatide in the setting of upstream clopidogrel use. Results were similar using actual clopidogrel treatment strata. Conclusions-Routine early eptifibatide use, compared with delayed provisional use, may be associated with lower 30-day ischemic risk in non-ST-elevation acute coronary syndrome patients also treated with clopidogrel before angiography. The benefit-risk ratio of intensive platelet inhibition with combined early use of antiplatelet agents needs further evaluation in prospective randomized trials.
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