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  • Title: Impact of Chronic Total Occlusion Revascularization Attempts on Subsequent Clinical Outcomes.
    Author: Jabbar A, Christopoulos G, Karatasakis A, Jeroudi OM, Christakopoulos GE, El Sabbagh A, Danek B, Karacsonyi J, Roesle M, Rangan BV, Grodin J, Luna M, Abdullah S, Banerjee S, Brilakis ES.
    Journal: J Invasive Cardiol; 2016 Dec; 28(12):E185-E192. PubMed ID: 27922810.
    Abstract:
    OBJECTIVES: We examined a contemporary, unselected cohort of patients with coronary chronic total occlusions (CTOs) to determine the impact of CTO revascularization on long-term outcomes. METHODS: We retrospectively assessed the impact of CTO revascularization on clinical outcomes of consecutive patients found to have a CTO during coronary angiography performed at our institution during 2011 and 2012. The primary endpoint was the incidence of a major adverse cardiac event (MACE, defined as a composite of death, myocardial infarction, stroke, and target-vessel revascularization [TVR]). Survival analysis was performed in the overall and propensity-matched retrospective cohorts of patients stratified by prior coronary artery bypass graft (CABG) surgery. Propensity-adjusted hazard ratio (HR) and 95% confidence interval (95% CI) were calculated with Cox proportional hazards analysis. All analyses were by intention to treat. RESULTS: Of 624 patients (319 without prior CABG and 305 with prior CABG) included in the present analysis, CTO revascularization (surgical or percutaneous) was attempted in 60% and 16% of patients without and with prior CABG, respectively. During a median follow-up of 26 months (range, 18-40 months), the incidence of MACE was 20.6%. CTO revascularization (achieved or attempted) was associated with lower incidence of MACE among patients without prior CABG (propensity-adjusted HR, 0.51; 95% CI, 0.27-0.94; P=.03), but not among prior CABG patients (propensity-adjusted HR, 1.38; 95% CI, 0.64-2.96; P=.41). CONCLUSION: In a large, unselected patient population with coronary CTOs, a CTO revascularization attempt was associated with lower incidence of subsequent MACE among patients without prior CABG, but not among prior CABG patients.
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