Predictive Value of Combining AccuIMR and AccuFFR in Patients With STEMI

Predictive Value of Combining Angio-Based Index of Microcirculatory Resistance and Fractional Flow Reserve in Patients With STEMI

Patients with acute myocardial infarction were enrolled retrospectively. The fractional flow reserve (AccuFFR) and microcirculatory resistance index (AccuIMR) based on coronary angiography were analyzed, and the relationship between FFR and IMR and the prognosis of patients with acute myocardial infarction was analyzed

We retrospectively enrolled STEMI patients who underwent PCI in Peking University Third Hospital. The fractional flow reserve (AccuFFR) and microcirculatory resistance index (AccuIMR) based on coronary angiography were obtained by analyzing the coronary angiography images. The prognosis of patients was obtained by searching inpatient and outpatient systems and telephone follow-up. The relationship between AccuFFR, AccuIMR and prognosis was statistically analyzed

Inclusion Criteria:

• Age of >18 years;
• Onset-to-treatment time of ≤12 h, meeting the diagnostic criteria for STEMI;
• underwent primary PCI within 12 h of symptom onset and achieved successful PCI in the culprit vessel;
• Availability of complete clinical data

Exclusion Criteria:

• severe tortuosity and overlap of the target vessel;
• poor-quality coronary angiography images;
• missing two coronary angiography images >25° apart