Primary percutaneous coronary intervention for ST-elevation myocardial infarction: From clinical trial to clinical practice

BackgroundMore than 10 years ago, survival benefit of primary percutaneous coronary intervention (PCI) for ST-elevation myocardial infarction (STEMI) was demonstrated in several randomized trials. Since then, primary PCI has been implemented in routine daily practice and is in the guidelines of the preferred reperfusion therapy for patients with STEMI. We aimed to assess time-dependent changes in baseline characteristics, concomitant treatment and prognosis in patients with STEMI treated with primary PCI.MethodsIndividual patient data from all 4732 patients admitted for primary PCI for STEMI between 1994 and 2004 in our hospital were recorded. Patient characteristics, concomitant treatment and one-year outcome were evaluated.ResultsDuring the 11-year period, mean age and proportion of female were increasing, whereas door to balloon time decreased. Stent implantation rates increased from 2% to 84%. At discharge, prescription of aspirin, beta-blockers, statins, and ADP receptor blockers increased significantly. From 1994 to 2004, hospital stay shortened from 10.4 to 4.5 days p < 0.001. Hospital and one-year mortality decreased, from 6.7% to 1.4% and 9% to 4.9% (both p < 0.001), respectively.ConclusionsBetween 1994 and 2004, utilization of stents and recommended pharmacotherapies increased remarkably. Hospital stay and both hospital and one-year mortality decreased significantly.