[Should a main coronary artery be dilated when the controlateral vessel is occluded?]

Area of Science:

• Cardiology
• Interventional Cardiology
• Vascular Surgery

Background:

• Occlusion of a contralateral coronary artery poses risks during angioplasty of a dominant vessel.
• Potential complications include left ventricular dysfunction and cardiogenic shock.

Purpose of the Study:

• To assess the safety and efficacy of angioplasty for single main coronary artery stenosis with contralateral occlusion.
• To compare outcomes with conventional double coronary artery bypass surgery and multi-vessel angioplasty.

Main Methods:

• Retrospective analysis of 193 patients undergoing angioplasty for single main coronary artery stenosis with contralateral occlusion.
• Comparison with a surgical group (n=52) and an angioplasty group (n=194) with comparable lesions.
• Evaluation of immediate and late (33 months) outcomes, including left ventricular function, revascularization rates, myocardial infarction, and mortality.

Main Results:

• 72% of patients in the study group had normal or mildly abnormal left ventricular function.
• In-hospital and late mortality and myocardial infarction rates were comparable across all three groups.
• The study group showed a higher incidence of subsequent coronary bypass surgery compared to the surgical group (p=0.002).

Conclusions:

• Angioplasty of a main coronary artery with contralateral occlusion is a safe alternative to double coronary artery bypass surgery and multi-vessel angioplasty.
• Incomplete revascularization in this context did not negatively impact survival rates without myocardial infarction.