STEMI patients show changes in circulating microparticle (cMP) signature.
Prothrombotic and proinflammatory cMPs vary both at systemic and coronary levels.
The cMP intracoronary profile associates to duration of pain-to-PCI ischemic time.
Peripheral cMPs associate to the number of diseased vessels.
cMPs may be considered as sensitive prognostic multi-biomarkers in STEMI.