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  • Title: Aspiration coronary thrombectomy for acute myocardial infarction increases myocardial salvage: single center randomized study.
    Author: Ciszewski M, Pregowski J, Teresińska A, Karcz M, Kalińczuk Ł, Pracon R, Witkowski A, Rużyłło W.
    Journal: Catheter Cardiovasc Interv; 2011 Oct 01; 78(4):523-31. PubMed ID: 21234920.
    Abstract:
    OBJECTIVES: The aim of the study was to assess if aspiration thrombectomy in high risk patients with STEMI and angiographic evidence of thrombus may improve myocardial salvage. BACKGROUND: It is unclear if thrombus aspiration before percutaneous intervention (PCI) improves myocardial salvage. METHODS: The trial was a prospective randomized study. The inclusion criteria were: first STEMI within 12 hr from symptoms onset, culprit lesion in left anterior descending or right coronary artery, culprit artery TIMI flow ≤ 2 and angiographic evidence of thrombus. The primary endpoint was myocardial salvage index (MSI) as assessed by (99m) Tc-sestamibi SPECT imaging. RESULTS: We randomized 137 patients (98 male, mean age 64.1 ± 12.5 years) either to aspiration thrombectomy followed by standard PCI with stent implantation (n = 67) or to standard primary PCI (n = 70). Index perfusion defect was similar in both study groups: 34.2% ± 13.1% in thrombectomy group versus 37.1% ± 12.0% in primary PCI group (P = 0.2). MSI was larger in aspiration thrombectomy group than in control patients [25.4% (IQR 13.5-44) vs. 18.5% (IQR 7.7-30.3) respectively, P = 0.02]. The final infarct size was smaller in patients treated with aspiration thrombectomy (23.1% ± 13.3% vs. 28.9% ± 10.2% in the control group, P = 0.002). CONCLUSIONS: Aspiration thrombectomy improves myocardial salvage in high risk STEMI patients with angiographic evidence of thrombus.
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