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  • Title: Improvement in three-month angiographic outcome suggested after primary angioplasty for acute myocardial infarction (Zwolle trial) compared with successful thrombolysis (APRICOT trial). Antithrombotics in the Prevention of Reocclusion In COronary Thrombolysis.
    Author: Veen G, de Boer MJ, Zijlstra F, Verheugt FW.
    Journal: Am J Cardiol; 1999 Oct 01; 84(7):763-7. PubMed ID: 10513770.
    Abstract:
    It has been shown that primary percutaneous transluminal coronary angioplasty (PTCA) for acute myocardial infarction results in higher patency rates than thrombolytic therapy. However, no data are available on differences in long-term angiographic outcome after successful primary PTCA compared with successful thrombolysis. Therefore, we compared angiographic data of the Antithrombotics in the Prevention of Reocclusion In COronary Thrombolysis (APRICOT) trial and the Zwolle primary PTCA trial. In the APRICOT trial 248 patients underwent coronary angiography at a mean of 24 hours after thrombolysis and had a patent infarct-related vessel (Thrombolysis In Myocardial Infarction-3 trial flow) when entering the study. Reocclusion rates were assessed at a second angiography after 3 months. In the Zwolle trial 136 patients had a successful primary PTCA. At 3 months 131 patients underwent a second angiography. Quantitative coronary angiography showed a significant lower mean diameter stenosis of the infarct-related vessel after primary PTCA (27 +/- 12% vs 57 +/-12%; p = 0.00001). At 3 months this difference was sustained (35 +/- 22% vs 63 +/- 26%; p = 0.00001). After thrombolysis the reocclusion rate at 3 months was 29% compared with 5% after primary PTCA (p = 0.0001). Results show that compared with successful thrombolytic therapy, primary PTCA for acute myocardial infarction results in an improved infarct-related vessel status not only short term but also long term, with a low reocclusion rate.
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