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Objective  This study aims to compare the clinical effects of selective interventional therapy (PCI) under the guidance of fractional flow reserve (FFR) and coronary arteriography.    Methods  Patients with sub-acute ST-segment elevation myocardial infarction (sub-acute STEMI), who were under selective PCI treatment between April 2012 and June 2014, were included into this study. These patients were divided into two groups, based on FFR measurements: FFR-PCI group and radiography-PCI group. Then, differences in clinical symptoms, coronary angiography, intervention, and endpoint events were compared between these two groups.    Results  A total of 592 patients with sub-acute STEMI were included in this study (207 patients in the FFR-PCI group and 385 patients in the radiography-PCI group). No statistical differences were observed in baseline clinical data and coronary angiography results between these two groups. Mean stent number was greater in the radiography-PCI group (1.22 ± 0.32) than in the FFR-PCI group (1.10 ± 0.29), and the difference was statistically significant ( P  = 0.019). During the follow-up period, 78 adverse events occurred (21 adverse events in the FFR-PCI group and 57 adverse events in the radiography-PCI group); and no statistical significance was observed between these two groups (log-rank  P  = 0.112).    Conclusion  Selective PCI treatment in patients with sub-acute STEMI under FFR acquired similar effects, compared to PCI treatment under the guidance of radiography, which can reduce the mean stent number.

european journal of medical research

Clinical effect of selective interventional therapy on sub-acute ST-segment elevation myocardial infarction under the guidance of fractional flow reserve and coronary arteriography