Long-term outcome of FFR-guided PCI for stable coronary artery disease in daily clinical practice: A propensity scorematched landmark analysis

Aims: Our aim was to investigate the strength of fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) for stable coronary artery disease (CAD) in daily practice. Methods and results: For this study, 3,512 patients with stable CAD and at least one 50-89% coronary stenosis were identified; those patients thought to require PCI (n=1,716) were selected. Of these, 962 (56%) were treated based on angiography (XA) alone, whereas 754 patients (44%) had an FFR-guided treatment. In the latter group, 321 patients (43%) were reallocated to another treatment, predominantly medical treatment. After propensity score matching, the number of indicated lesions was 957 in the XA-guided group and 947 in the FFR-guided group. FFR guidance resulted in PCI deferral in 462 lesions (48.8%). In a seven-day landmark analysis, the rate of periprocedural myocardial infarction (MI) was less than half in the FFR-guided group (p>0.05). For the eight-day to four-year follow-up period, FFR guidance resulted in a significantly lower rate of the combined endpoint of death/MI (hazard ratio [HR] 0.63) and MI-driven target lesion revascularisation (HR 0.35). Conclusions: This large, retrospective study shows that performing FFR has a significant impact on therapeutic strategy and demonstrates the favourable long-term outcome of FFR-guided PCI in an "all-comers" population of patients with stable CAD in daily clinical practice.