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Orban, Martin; Limbourg, Tobias; Neumann, Franz-Josef; Ferenc, Miroslaw; Olbrich, Hans-Georg; Richardt, Gert; Hennersdorf, Marcus; Empen, Klaus; Fuernau, Georg; Desch, Steffen; Eitel, Ingo; Hambrecht, Rainer; Poess, Janine; Schneider, Steffen; Schuler, Gerhard; Werdan, Karl; Zeymer, Uwe; Thiele, Holger; Hausleiter, Jörg (2016): ADP receptor antagonists in patients with acute myocardial infarction complicated by cardiogenic shock: a post hoc IABP-SHOCK II trial subgroup analysis. In: Eurointervention, Vol. 12, No. 11, E1395-E1403
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Abstract

Aims: The aim of this post hoc subgroup analysis of the Intraaortic Balloon Pump in Cardiogenic Shock II trial was to compare the clinical outcome of patients treated with either clopidogrel or the newer, more potent P2Y 12 receptor inhibitors prasugrel or ticagrelor. Methods and results: The primary endpoint was one-year mortality with respect to different P2Y(12) receptor inhibitors. Secondary safety endpoints were GUSTO bleedings until hospital discharge. After exclusion of 117 patients (patients who died before or during PCI, patients with unavailable information on P2Y(12) receptor inhibitor treatment, patients not receiving or receiving a combination of different P2Y(12) receptor inhibitors as acute antiplatelet therapy), 483 patients were analysed. Of these, 373 patients (77.2%) received clopidogrel and 110 patients (22.8%) either prasugrel or ticagrelor as acute antiplatelet therapy. The adjusted rate of mortality did not differ between prasugrel/ticagrelor and clopidogrel treated patients (HR: 0.83, 95% CI: 0.59-1.19, p(adj) = 0.31). GUSTO bleedings did not differ between groups (14.3% for prasugrel/ ticagrelor and 16.4% for clopidogrel, HR: 0.91, 95% CI: 0.55-1.5, p(adj) = 0.7). Conclusions: This IABP-SHOCK II trial subgroup analysis shows that the use of potent P2Y 12 receptor inhibitors like prasugrel or ticagrelor is feasible and might not be harmful in selected patients with cardiogenic shock complicating acute myocardial infarction. However, the superiority in comparison to clopidogrel remains to be proven.