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.
Montalto C., Kotronias RA., Marin F., Terentes-Printzios D., Shanmuganathan M., Emfietzoglou M., Scalamera R., Porto I., Langrish J., Lucking A., Choudhury R., Kharbanda R., Channon KM., De Maria GL., Banning A., Oxford Acute Myocardial Infarction (OxAMI) Study None.
BACKGROUND: The ATI (Age-Thrombus burden-Index of Microvascular Resistance [IMR]) score was developed to predict suboptimal myocardial reperfusion in patients with ST-Elevation Myocardial Infarction (STEMI). When applied in the early phases of revascularization (e.g. before stent insertion), it predicts which patients are most likely to have a larger infarct size. In this study, we assessed the score's utility in determining which STEMI patients are at highest risk of clinical events during follow-up. METHODS: The ATI-score was calculated prospectively in 254 STEMI patients using age (>50 years = 1 point), pre-stenting IMR (>40 U and