Objectives: We sought to investigate the prognostic impact of rheolytic thrombectomy (RT) in patients with acute myocardial infarction (AMI) complicated by cardiogenic shock (CS).
Background: Very few data exist on thrombus removal before stenting in patients with AMI and CS treated with primary percutaneous coronary intervention (PCI).
Methods: Of 4023 patients who underwent PCI for AMI between 1995 and 2012, we focused on 371 patients presenting with CS at admission and separated them into two groups: the first included 63 patients treated with RT (RT group), and the remaining 308 underwent standard PCI (non-RT group). The primary endpoint was the composite of cardiac death, reinfarction, stroke, and target-vessel revascularization (TVR) at 2-year follow-up (MACE).
Results: The primary endpoint rate was lower in the RT-group (57.1% RT vs 70.8% non-RT; P=.04). The difference between groups was driven by a lower TVR rate (9.5% RT vs 23.4% non-RT; P=.02) and reinfarction (1.6% RT vs 9.1% non-RT; P=.04), while no difference between groups was revealed in mortality (46.0% RT vs 49.4% non-RT; P=.68) or stroke rate (1.6% RT vs 3.2% non-RT; P=.70). At multivariable analysis, the variables related to the risk of the primary endpoint were age (hazard ratio [HR], 1.036; 95% confidence interval [CI], 1.022-1.048; P<.001), three-vessel disease (HR, 1.504; 95% CI, 1.163-1.946; P=.01), RT (HR, 0.689; 95% CI, 0.476-0.998; P=.049), and successful primary PCI (HR, 0.367; 95% CI, 0.266-0.505; P<.001).
Conclusion: RT reduces 2-year MACE rate in patients with large thrombus burden and AMI complicated by CS.
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