Revascularization vs. Medical Therapy for Coronary Chronic Total Occlusions in Patients With Chronic Kidney Disease

Area of Science:

• Cardiology
• Nephrology
• Interventional Cardiology

Background:

• Chronic total occlusion (CTO) poses treatment challenges.
• The impact of revascularization versus medical therapy in CTO patients with and without chronic kidney disease (CKD) is not fully understood.

Purpose of the Study:

• To compare the effectiveness of revascularization versus medical therapy in patients with CTO, specifically examining differences between those with and without CKD.

Main Methods:

• A total of 2,010 CTO patients were analyzed, comparing revascularization (percutaneous coronary intervention or coronary artery bypass grafting) with medical therapy alone.
• The primary outcome assessed was all-cause mortality during follow-up.
• Statistical analysis included adjusted hazard ratios and interaction testing between kidney function and treatment strategy.

Main Results:

• In non-CKD patients, revascularization significantly reduced all-cause death (aHR 0.54, P<0.001).
• In CKD patients, the difference in all-cause death between revascularization and medical therapy was not statistically significant (aHR 0.71, P=0.09).
• A significant interaction was observed between kidney function and treatment strategy on all-cause death (P=0.014).

Conclusions:

• Revascularization may be less effective in improving survival for CTO patients with pre-existing CKD compared to those without CKD.
• Treatment strategy for CTO in patients with CKD should be carefully considered.