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Am J Cardiol. 2010 Nov 1;106(9):1218-24. doi: 10.1016/j.amjcard.2010.06.049. Epub 2010 Sep 9.

Impact of transfer for primary percutaneous coronary intervention on survival and clinical outcomes (from the HORIZONS-AMI Trial).

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Clinic of Internal Medicine II, University of Ulm, Germany.


Primary percutaneous coronary intervention (PCI) is the preferred reperfusion strategy in patients with ST-segment elevation myocardial infarction (STEMI). We evaluated whether presentation of patients with STEMI to a noninterventional facility requiring transfer for primary PCI compared to direct admission to a PCI center has an impact on clinical outcomes. Of 3,602 patients enrolled in the multicenter, prospective HORIZONS-AMI trial, 988 (24.7%) were transferred for primary PCI and 2,614 were directly admitted to an interventional hospital. Clinical outcomes at 30 days and 1 year were evaluated. Median time to reperfusion in patients with transfer was 67 minutes longer compared to patients without transfer (272 vs 205 minutes, p <0.001), and first door-to-balloon time was 47 minutes longer (134 vs 87 minutes, p <0.001). At 30 days and 1 year there were no significant differences between patients with and without transfer in the rates of major adverse cardiac events (30 days 5.8% vs 5.4%, p = 0.68; 1 year 11.6% vs 12.0%, p = 0.74), major bleeding (30 days 7.3% vs 6.9%, p = 0.66; 1 year 7.9% vs 7.4%, p = 0.63), or mortality (30 days 2.6% vs 2.6%, p = 0.92; 1 year 4.0% vs 4.2%, p = 0.81). In transfer and nontransfer patients use of bivalirudin compared to unfractionated heparin plus glycoprotein IIb/IIIa inhibitor was associated with lower rates of bleeding, cardiac death, and net adverse clinical events. In conclusion, in the HORIZONS-AMI trial, 30-day and 1-year survival rates and clinical outcomes were comparable in patients with STEMI requiring and not requiring transfer for primary PCI.

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