Summary

This article presents the results of the Verification of Instantaneous Wave-Free Ratio and Fractional Flow Reserve for the Assessment of Coronary Artery Stenosis Severity in Everyday Practice trial [VERIFY-2] comparing the performance of nonhyperemic indices of stenosis severity (instantaneous wave-free ratio [iFR] or resting distal coronary pressure / aortic pressure ratio [Pd/Pa]) with fractional flow reserve for assessing coronary stenosis severity.