Coronary resting gradients for hemodynamic lesion assessment ‐ The future of coronary physiology?

Abstract

Coronary resting gradient measurements with cut-off values of ≤0.87 and ≥0.93 portend a high degree of certainty with respect to appropriateness of coronary revascularization Less agreement exists in patients in the so called indeterminate "gray zone" Pressure-bounded coronary flow reserve may aid in our understanding of the underlying physiologic principles and facilitate the clinical assessment of these lesions.