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Radial Artery Conduit Use After Transradial Catheterisation
Yantong Wang1, Michael Bailey2, Silvana F Marasco3
1School of Translational Medicine, Monash University, Melbourne, Vic, Australia.
Heart, Lung & Circulation
|June 27, 2025
Summary
Transradial catheterisation (TRC) of the radial artery (RA) may reduce graft patency. Previously catheterised right RAs showed lower patency than non-catheterised left RAs, but remain a viable option when needed.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Vascular Biology
Background:
- Transradial catheterisation (TRC) is standard for coronary angiography.
- TRC can cause endothelial damage and vasodilatory dysfunction in the radial artery (RA).
- Limited evidence exists on TRC's impact on RA graft patency.
Purpose of the Study:
- To investigate the effect of prior transradial catheterisation on the patency of radial artery grafts used in coronary artery bypass grafting.
Main Methods:
- Retrospective cohort study of 68 patients undergoing coronary artery bypass grafting with previously catheterised RA grafts.
- Graft patency assessed via invasive or computed tomography coronary angiography.
- Compared patency rates of previously catheterised right RAs (RRAs) versus non-catheterised left RAs (LRAs).
Main Results:
- Previously catheterised RRAs had significantly lower patency (72%) than non-catheterised LRAs (87%; p=0.02).
- Factors associated with RRA graft occlusion included female sex, peripheral vascular disease, and myocardial infarction history.
- Severe right coronary artery stenosis was linked to RRA graft patency.
Conclusions:
- Previously catheterised RRA grafts may exhibit reduced patency compared to non-catheterised LRA grafts.
- Despite potential patency issues, previously catheterised RAs are a useful conduit option, particularly when alternatives are scarce.
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