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Resuscitation. 2009 Apr;80(4):402-6. doi: 10.1016/j.resuscitation.2008.12.004. Epub 2009 Jan 22.

Reperfusion rate and inhospital mortality of patients with ST segment elevation myocardial infarction diagnosed already in the prehospital phase: results of the German Prehospital Myocardial Infarction Registry (PREMIR).

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Herzzentrum Ludwigshafen, Germany; Institut für Herzinfarktforschung Ludwigshafen an der Universität Heidelberg, Ludwigshafen, Germany.



We sought to evaluate the in-hospital fate of patients with ST segment elevation myocardial infarction (STEMI) diagnosed already in the prehospital phase by physican equipped ambulances.


A total of 2326 consecutive STEMI patients were included in PREMIR. For this analysis 218 patients with prehospital cardiopulmonary resuscitation were excluded.


The median time between symptom onset and 12-lead ECG was 85 min. The median time intervals between the diagnostic 12-lead ECG and prehospital fibrinolysis were 10 min, until inhospital fibrinolysis 52 min and until primar PCI 86min, respectively. Reperfusion therapy with prehospital fibrinolysis (24%), inhospital fibrinolysis (13%) or primary PCI (45%) was performed in 82% of the patients. Inhospital mortality was 6.0% in patients with prehospital fibrinolysis (n = 504), 5.8% in patients with inhospital fibrinolysis (n = 278), 4.5% in patients with primary percutaneous coronary intervention (n = 962) and 16.2% in patients without early reperfusion therapy (n = 377), respectively. In the multivariate propensity score analysis comparing prehospital fibrinolysis and primary PCI we observed no significant difference in the odds for in-hospital mortality (odds ratio: 1.57, 95% CI: 0.94-2.63). The final discharge diagnosis was STEMI in 90% of the patients, in patients with prehospital fibrinolysis 95%.


In patients with STEMI already diagnosed in the prehospital phase the ischemic time is short, accuracy of the diagnosis is high and reperfusion therapy is performed in over 82%. Inhospital mortality was not different between prehospital fibrinolysis and primary PCI.

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