Pre-procedural ATI score (age-thrombus burden-index of microcirculatory resistance) predicts long-term clinical outcomes in patients with ST elevation myocardial infarction treated with primary percutaneous coronary intervention

•The ATI-score (ATIs) is calculated using pre-stenting IMR, age and thrombus burden score•The ATIs can be used in STEMI patients to predict microvascular dysfunction and infarct size•A high ATIs was independently associated with increased MACE at long term follow-up•The ATIs had a moderate discriminative power, not significantly different from other risk scores•Our results allow to individualize therapy in the early stages of the clinical care-pathway.