Predictive Value of the Index of Microcirculatory Resistance in Patients With ST-Segment Elevation Myocardial Infarction

Predictive Value of the Index of Microcirculatory Resistance in Patients With ST-Segment Elevation Myocardial Infarction William F. Fearon, Maulik Shah, Martin Ng, Todd Brinton, Andrew Wilson, Jennifer A. Tremmel, Ingela Schnittger, David P. Lee, Randall H. Vagelos, Peter J. Fitzgerald, Paul G. Yock, Alan C. Yeung Evaluating the coronary microvasculature remains challenging, particularly in the setting of ST-segment elevation myocardial infarction (STEMI), where its status has a significant impact on outcomes. In this study, we find that the index of microcirculatory resistance, a new method for assessing the microvasculature, is a better predictor of myocardial damage in patients undergoing primary percutaenous coronary intervention for STEMI compared to traditional methods for evaluating the microcirculation.