Six month results of randomized clinical trial: Multivessel stenting versus staged revascularization for ST-elevation myocardial infarction patients with second generation drug eluting stents

Background: There are no randomized trials described outcomes of multivessel percutaneous coronary interventions (PCI) (in primary and staged revascularization) with second generation drug eluting stents (DES) in patients with ST-elevation myocardial infarction (STEMI). We are presenting preliminary results of randomized trial (NCT01781715). Methods: Six-month outcomes of 89 consecutive patients with STEMI and multivessel coronary artery disease (CAD) (SYNTAX 18.6±7.9 points) undergoing primary PCI with zotarolimus-eluting stents (Resolute Integrity; Medtronic) were studied. We used two strategies of multivessel stenting: in primary PCI (MS primary, n=46) (the IRA was opened followed by dilatation of other significantly narrowed arteries during the same procedure) and multivessel stenting in staged revascularisation (MS staged, n=43) (the IRA only was treated during the primary intervention while the complete revascularization was planned in a second procedure (8.5±4.2 days)) in our prospective randomized study. Results: During follow-up of 6 months there was no cardiac death in overall group. We observed 1 (2.3%) non-cardiac death in MS staged group vs 0 in MS primary (p=0.9), 0 non-fatal myocardial infarction (MI) in MS staged group vs 3 (6.5%) in MS primary (p=0.3) due to definite stent thromboses (ST) (2.5% on the number of stents). There was no target vessel revascularization (TVR) in MS staged group, but it was performed in 2 cases (4.3%) in MS primary group (p=0.5). Major adverse cardiac event (MACE) (cardiac death, MI, TVR) was diagnosed in 2.3% and 6.5% in MS staged and MS primary group (p=0.7). Conclusions: second generation DES in STEMI patients with multivessel CAD are satisfactory safely and effectively as part of the strategy of multivessel stenting in primary PCI and multivessel staged PCI (8.5±4.2 days). Multivessel stenting in primary PCI was associated with higher risk of stent thrombosis (ST) compared with multivessel staged PCI in six month follow-up period.