The ATI score calculated prospectively during primary PCI was closely related to final infarct size assessed by cardiac magnetic resonance imaging in patients with STEMI.
Cohort (n=80)
Does the ATI score determined during primary PCI predict final infarct size and microvascular obstruction in patients with STEMI?
The ATI score, calculated during primary PCI using age, pre-stenting IMR, and angiographic thrombus score, correlates with final infarct size assessed by cMRI in STEMI patients.
AIMS: The age-thrombus burden-index of microcirculatory resistance (ATI) score is a diagnostic tool able to predict suboptimal myocardial reperfusion before stenting, in patients with ST-elevation myocardial infarction (STEMI). We aimed to validate the ATI score against cardiac magnetic resonance imaging (cMRI). METHODS AND RESULTS: The ATI score was calculated prospectively in 80 STEMI patients. cMRI was performed within 48 hours in all patients and in 50 patients at six-month follow-up to assess the extent of infarct size (IS%) and microvascular obstruction (MVO%). The ATI score was calculated using age (>50=1 point), pre-stenting index of microcirculatory resistance (IMR) (>40 and <100=1 point; ≥100=2 points) and angiographic thrombus score (4=1 point; 5=3 points). ATI score was closely related to final IS% (ATI.
Maria et al. (Sun,) conducted a cohort in ST-elevation myocardial infarction (STEMI) (n=80). ATI score was evaluated on Extent of infarct size (IS%) and microvascular obstruction (MVO%) assessed by cMRI. The ATI score calculated prospectively during primary PCI was closely related to final infarct size assessed by cardiac magnetic resonance imaging in patients with STEMI.