Post-primary PCI angio-IMR independently predicts myocardial infarct size and microvascular obstruction in STEMI patients.
Does post-PCI angio-IMR predict myocardial infarct size and microvascular obstruction in patients with STEMI?
Post-PCI angio-IMR serves as an independent predictor of infarct size and microvascular obstruction in STEMI patients, suggesting its utility in assessing residual myocardial damage.
Background: Coronary microvascular dysfunction has been associated with adverse cardiovascular events following acute myocardial infarction. This study evaluates the role of the angiography-derived index of microcirculatory resistance (angio-IMR) in predicting myocardial damage in patients with ST-segment-elevation myocardial infarction undergoing primary percutaneous coronary intervention (PCI). Conclusions: In patients with ST-segment-elevation myocardial infarction, post-PCI angio-IMR was identified as independent predictor of myocardial infarct size and extent of microvascular obstruction. Registration: URL: https://clinicaltrials.gov; Unique Identifier: NCT01529554.
Candreva et al. (2025) studied this question. Post-primary PCI angio-IMR independently predicts myocardial infarct size and microvascular obstruction in STEMI patients.