Fracassi F, et al. - Researchers investigated whether hemorheological parameters contribute to the incidence of microvascular obstruction (MVO) and the periprocedural necrosis after primary or elective percutaneous coronary intervention (PCI), and whether these have any prognostic significance. Participants were 25 patients with ST-elevation myocardial infarction (STEMI), 30 patients with non-ST-elevation myocardial infarction (NSTEMI), and 30 patients with stable angina (SA) undergoing PCI. According to findings, hemorheological parameters might contribute to myocardial injury in patients undergoing either urgent or elective PCI. These parameters, if furtherly confirmed, associate with an unfavorable outcome in these subjects.