Some studies have shown that TA prior to stent insertion in PCI in patients with acute ST-elevation myocardial infarction can improve several events such as all-cause mortality, cardiovascular death, non-fatal MI at one year, and two years; improve myocardial perfusion and mortality during the procedure; improve microvascular perfusion, improve left ventricular remodeling and reduce infarct size at 90 days and 6 months.