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Online Quantitative Aortographic Assessment of Aortic Regurgitation After TAVR: Results of the OVAL Study Clinical impact of PCSK9 inhibitor on stabilization and regression of lipid-rich coronary plaques: a near-infrared spectroscopy study A volumetric intravascular ultrasound comparison of early drug-eluting stent thrombosis versus restenosis Extracellular Vesicles From Epicardial Fat Facilitate Atrial Fibrillation Summary of Updated Recommendations for Primary Prevention of Cardiovascular Disease in Women: JACC State-of-the-Art Review American College of Cardiology Clinical Expert Consensus Document on Standards for Acquisition, Measurement and Reporting of Intravascular Ultrasound Studies (IVUS). A report of the American College of Cardiology Task Force on Clinical Expert Consensus Documents Stage-dependent differential effects of interleukin-1 isoforms on experimental atherosclerosis Comparison of inhospital mortality, length of hospitalization, costs, and vascular complications of percutaneous coronary interventions guided by ultrasound versus angiography Prognostic value of coronary artery calcium screening in subjects with and without diabetes Colchicine Reduces Cardiovascular Events in Chronic Coronary Disease

Review ArticleVolume 12, Issue 10, May 2019

JOURNAL:JACC Cardiovasc Interv. Article Link

The Potential Use of the Index of Microcirculatory Resistance to Guide Stratification of Patients for Adjunctive Therapy in Acute Myocardial Infarction

Maznyczka AM, Oldroyd KG, Berry C et al. Keywords: ST-segment elevation myocardial; adjunctive therapy; index of microcirculatory resistance; infarction; microvascular obstruction; stratified medicine

ABSTRACT


The goal of reperfusion therapies in ST-segment elevation myocardial infarction has evolved to include effective reperfusion of the microcirculation subtended by the culprit epicardial coronary artery. The index of microcirculatory resistance is measured using a pressure- and temperature-sensing coronary guidewire and quantifies microvascular dysfunction. The index of microcirculatory resistance is an independent predictor of microvascular obstruction, infarct size, and adverse clinical outcomes. It has the advantage of being immediately measurable in the catheterization laboratory, before the results of blood biomarkers or noninvasive imaging become available. This provides an opportunity for additional intervention that may alter outcomes. In this review, the authors provide a critical appraisal of the published research on the emerging role of the index of microcirculatory resistance as a tool to guide the stratification of patients for adjunctive therapeutic strategies in acute ST-segment elevation myocardial infarction.


Copyright © 2019. Published by Elsevier Inc.