Combination therapy reduces the incidence of no-reflow after primary percutaneous coronary intervention in patients with ST-segment elevation acute myocardial infarction

Background No-reflow is associated with an adverse outcome and higher mortality in patients with ST-segment elevation acute my-ocardial infarction (STEMI) who undergo percutaneous coronary intervention (PCI) and is considered a dynamic process characterized by multiple pathogenetic components. The aim of this study was to investigate the effectiveness of a combination therapy for the prevention of no-reflow in patient with acute myocardial infarction (AMI) undergoing primary PCI. Methods A total of 621 patients with STEMI who underwent emergency primary PCI were enrolled in this study. Patients with high risk of no-reflow (no-flow score ≥ 10, by using a no-flow risk prediction model, n = 216) were randomly divided into a controlled group (n = 108) and a combination therapy group (n = 108). Patients in the controlled group received conventional treatment, while patients in combination therapy group received high-dose (80 mg) atorvastatin pre-treatment, intracoronary administration of adenosine (140 μg/min per kilogram) during PCI procedure, platelet membrane glycoprotein Ⅱb/Ⅲa receptor antagonist (tirofiban, 10μg/kg bolus followed by 0.15 μg/kg per minute) and thrombus aspiration. Myocardial contrast echocardiography was performed to assess the myocardial perfusion 72 h after PCI. Major adverse cardiac events (MACE) were followed up for six months. Results Incidence of no-reflow in combination therapy group was 2.8%, which was similar to that in low risk group 2.7% and was significantly lower than that in control group (35.2%, P P Conclusions Combination of thrombus aspiration, high-dose statin pre-treatment, intracoronary administration of adenosine during PCI procedure and platelet membrane glycoprotein Ⅱb/Ⅲa receptor antagonist reduce the incidence of no-reflow after primary PCI in patients with acute myocardial infarction who are at high risk of no-reflow.