March 20, 2017 — For patients experiencing angina (chest pain) or a heart attack, instantaneous wave-free ratio (iFR) was equivalent to the current gold standard of fractional flow reserve (FFR) in assessing the hemodynamic severity of coronary lesions. Two key late-breaking trials presented at the 2017 American College of Cardiology (ACC) meeting this weekend showed iFR vs. FFR had same incidence of major adverse. The studies also showed iFR had much less patient discomfort and reduced procedure-related adverse events compared to FFR.
