Chronic total occlusion recanalization for myocardial infarction

Area of Science:

• Cardiology
• Interventional Cardiology
• Vascular Surgery

Background:

• Management of complex coronary artery disease often involves challenging revascularization strategies.
• Saphenous vein graft (SVG) interventions carry inherent risks, especially with diffuse disease.
• Chronic total occlusions (CTOs) in native coronary arteries present significant therapeutic hurdles.

Observation:

• An 84-year-old patient with prior coronary artery bypass surgery presented with non-ST segment elevation acute myocardial infarction.
• The culprit lesion was identified at the distal anastomosis of an SVG to the right posterior descending artery, with a chronically occluded proximal right coronary artery.
• Percutaneous intervention of the SVG was deemed high-risk due to extensive disease proximal and distal to the anastomosis.

Findings:

• Successful recanalization of the native right coronary artery chronic total occlusion was achieved.
• Complete revascularization of the right coronary artery territory was accomplished.
• The problematic saphenous vein graft was intentionally occluded using an Amplatzer vascular plug post-revascularization.

Implications:

• This case demonstrates a viable strategy for achieving complete revascularization in patients with complex coronary artery disease and high-risk SVG lesions.
• Recanalizing native coronary CTOs can be a preferred alternative to high-risk bypass graft interventions.
• Intentional occlusion of non-viable or high-risk grafts can be a safe adjunct to complete native vessel revascularization.