Postocclusional Hyperemia for Fractional Flow Reserve After Percutaneous Coronary Intervention

Postocclusional hyperemia caused by balloon occlusion is a potential alternative method of inducing hyperemia for measuring post-percutaneous coronary intervention fractional flow reserve (FFR). The aim of this study was to investigate postocclusional hyperemia as a method of inducing hyperemia. FFR measured by postocclusional hyperemia (FFRoccl) caused by balloon occlusion after percutaneous coronary intervention was compared with FFR measured by drug-induced hyperemia (FFR measured by intravenous ATP; and FFR measured by intracoronary papaverine injection [FFRpap]) in 98 lesions from 98 patients. The hyperemia duration was also measured for FFRoccl and FFRpap. The correlation coefficient between FFRoccl, FFR measured by intravenous ATP ( =0.973;