Prognostic Assessment of Fractional Flow Reserve in Different Strata in Patients with Coronary Artery Disease.

Background: There are limited real-world data on the clinical course of untreated coronary lesions according to their functional severity.

Objective: To evaluate the 5-year clinical outcomes of patients with revascularized lesions with fractional flow reserve (FFR) ≤ 0.8 and patients with non-revascularized lesions with FFR > 0.