OPTIMIZE Trial: Subanalysis of Patients Treated at Instituto Dante Pazzanese de Cardiologia

Background:

OPTIMIZE was a prospective study conducted in 33 Brazilian sites that randomized patients to receive dual antiplatelet therapy for 3 or 12 months after zotarolimus eluting stent implantation. Our objective was to evaluate the outcomes of patients treated at Instituto Dante Pazzanese de Cardiologia and compare them to the outcomes of patients from other participating study sites.

Methods:

Patients with stable angina or low risk acute coronary syndrome were included in the study. The primary outcome was the incidence of adverse clinical and cerebral events, a composite of all cause of death, myocardial infarction, stroke, or major bleeding at 12 months.

Results:

Between April/2010 and March/2012, we included 624 (20%) patients in the OPTIMIZE study. At 12 months, there was no significant difference between groups (3 vs. 12 months of dual antiplatelet therapy) for net adverse clinical and cerebral events (3.8% vs. 6.7%; p = 0.15), major adverse cardiac events (6.7% vs. 7.1; p > 0.99) or stent thrombosis (0 vs. 1.3%; p = 0.12). The heterogeneity test showed that the variability observed in the results of Instituto Dante Pazzanese de Cardiologia and in the remaining sites was not greater than the expected to occur by chance (p = 0.064).

Conclusions:

In patients treated at Instituto Dante Pazzanese de Cardiologia, 3 months of dual antiplatelet therapy was not inferior to 12 months of therapy for the occurrence of net adverse clinical and cerebral events or major adverse cardiac events. There was no significant increased risk of stent thrombosis. Our results did not differ from the remaining participating sites of OPTIMIZE.

Coronary artery disease; Drug-Eluting stents; Paclitaxel; Sirolimus; Hemorrhage; Coronary thrombosis