Prognostic Implication of Angiography-Derived IMR in STEMI Patients

Coronary microcirculatory dysfunction has been known to be prevalent even after successful revascularization of STEMI patients. Previous study presented that index of microcirculatory resistance (IMR) in culprit vessel of STEMI patients showed significant association with the risk of cardiac death or heart failure admission. Recent technical development enabled angiographic derivation of IMR without pressure wire, hyperemic agents, or theromdilution method. In this regard, the current study will evaluate prognostic implication of angiography-derived IMR in STEMI patients who were successfully revascularized.