The Same Angiographic Factors Predict Venous and Arterial Graft Patency: A Retrospective Study

Area of Science:

• Cardiology
• Vascular Surgery
• Interventional Cardiology

Background:

• Coronary artery bypass grafting (CABG) is a common procedure for treating coronary artery disease.
• Graft failure, both venous and arterial, remains a significant concern impacting long-term patient outcomes.
• Predicting graft failure is crucial for optimizing patient management and surgical strategies.

Purpose of the Study:

• To investigate the predictive value of pre-operative angiographic factors for venous and arterial coronary artery bypass graft failure.
• To identify specific angiographic characteristics associated with graft failure after CABG surgery.

Main Methods:

• Retrospective analysis of 148 patients who underwent CABG and had follow-up coronary angiography.
• Evaluation of pre-CABG and follow-up angiograms for diameter stenosis (DS), stenosis length, Bogaty score, Sullivan score, Gensini score, and Jeopardy Duke score.
• Comparison of angiographic parameters between patients with and without graft failure.

Main Results:

• Overall graft failure rate was 26% (39 patients).
• Venous graft failure was associated with significantly lower DS, shorter stenosis length, and lower extent index, Sullivan score, and Gensini score.
• Arterial graft failure was linked to significantly lower DS, shorter stenosis length, and lower extent index and Sullivan score.

Conclusions:

• Less severe stenosis and less extensive atherosclerosis in the target vessel are associated with increased risk of both venous and arterial CABG graft failure.
• Angiographic assessment of pre-existing coronary artery disease severity may aid in predicting graft outcomes.