Ticagrelor versus clopidogrel in elderly patients with acute coronary syndromes

Background—Elderly patients with acute coronary syndrome are at high risk of recurrent ischemic events and death, and for both antithrombotic therapy and catheter-based complications. This prespecified analysis investigates the effect and treatment-related complications of ticagrelor versus clopidog...

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Hauptverfasser: Husted, Steen Elkjær (VerfasserIn) , Katus, Hugo (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 1 Sep 2012
In: Circulation. Cardiovascular quality and outcomes
Year: 2012, Jahrgang: 5, Heft: 5, Pages: 680-688
ISSN:1941-7705
DOI:10.1161/CIRCOUTCOMES.111.964395
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1161/CIRCOUTCOMES.111.964395
Verlag, Volltext: https://www.ahajournals.org/doi/10.1161/CIRCOUTCOMES.111.964395
Volltext
Verfasserangaben:Husted Steen, James Stefan, Becker Richard C., Horrow Jay, Katus Hugo, Storey Robert F., Cannon Christopher P., Heras Magda, Lopes Renato D., Morais Joao, Mahaffey Kenneth W., Bach Richard G., Wojdyla Daniel, Wallentin Lars

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520 |a Background—Elderly patients with acute coronary syndrome are at high risk of recurrent ischemic events and death, and for both antithrombotic therapy and catheter-based complications. This prespecified analysis investigates the effect and treatment-related complications of ticagrelor versus clopidogrel in elderly patients (≥75 years of age) with acute coronary syndrome compared with those <75 years of age.Methods and Results—The association between age and the primary composite outcome, as well as major bleeding were evaluated in the PLATelet inhibition and patient Outcomes (PLATO) trial using Cox proportional hazards. Similar models were used to evaluate the interaction of age with treatment effects. Hazard ratios were adjusted for baseline characteristics. The clinical benefit of ticagrelor over clopidogrel was not significantly different between patients aged ≥75 years of age (n=2878) and those <75 years of age (n=15 744) with respect to the composite of cardiovascular death, myocardial infarction, or stroke (interaction P=0.56), myocardial infarction (P=0.33), cardiovascular death (P=0.47), definite stent thrombosis (P=0.81), or all-cause mortality (P=0.76). No increase in PLATO-defined overall major bleeding with ticagrelor versus clopidogrel was observed in patients aged ≥75 years (hazard ratio, 1.02; 95% confidence interval, 0.82-1.27) or patients aged <75 years (hazard ratio, 1.04; 95% confidence interval, 0.94-1.15). Dyspnea and ventricular pauses were more common during ticagrelor than clopidogrel treatment, with no evidence of an age-by-treatment interaction.Conclusions—The significant clinical benefit and overall safety of ticagrelor compared with clopidogrel in acute coronary syndrome patients in the PLATO cohort were not found to depend on age.Clinical Trial Registration—URL: http://www.clinicaltrials.gov. Unique identifier: NCT00391872. 
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