Revascularization for Stable Chronic Total Occlusion is Essential for Diabetic Patient with Heart Failure
Abstract Background Revascularization is the recommended treatment strategy for patients with heart failure (HF) and coronary artery disease (CAD). However, chronic total occlusion (CTO) is less attempt. Furthermore, there were conflicting debates on if diabetic HF patients gained benefits from revascularization. As to CTO revascularization, no study answered if it offered benefits to diabetic HF patients. Methods Diabetic patients with stable CTO and HF were consecutively enrolled in this retrospective cohort study. Based on treatment strategies to the CTO vessel, patients were assigned to successful revascularization (CTO-SR) or medical therapy (CTO-MT) group. The primary endpoints were major adverse cardiac events (MACE). Subgroup analysis were performed based on left ventricular ejection fraction (LVEF) and relevant baseline variables. Results A population of 680 patients were enrolled in the present study: 344 patients in the CTO-MT group, and 336 patients in the CTO-SR group. After a median follow-up of 34 months, CTO-SR was superior to CTO-MT in MACE (adjusted hazard ratio [HR]: 0.462, 95% conference interval [CI]: 0.337-0.634), which could mainly due to the superiority in cardiac-death and TVR. Propensity matching analysis also confirmed CTO-SR’s superiority (HR: 0.494 [0.337-0.725]). Subgroup analysis further confirmed a consistent superiority in patients with LVEF≥40%, but not in those with LVEF<40%.Conclusions For patients with diabetes, HF and stable CTO, CTO-SR was superior to CTO-MT. CTO-SR’s superiority was consistent in patients with LVEF≥40%, but not for patients with LVEF<40%. Trial registration This study was not registered in an open access database.