Radial artery vs right internal mammary artery as a second conduit during coronary artery bypass grafting
Authors' conclusion
Overall, RA and RIMA secondary conduits for CABG were associated with comparable immediate postoperative complications, 5-year MACCE, and 5-year survival after PSM. RA grafting was associated with significantly higher rates of repeat coronary revascularization at 5 years, specifically in the territory revascularized by the RA during the index operation.
Study context
- Population
- Patients undergoing isolated multiarterial CABG at a single institution, 2010–2022matched cohort 323 vs 323
- Participants
- 1,674 patients
- Exposure
- Radial artery (RA) vs right internal mammary artery (RIMA) as second conduit during CABG
- RAn = 326
- RIMAn = 1,348reference
- Outcome
- Long-term survival and MACCE (death, myocardial infarction (MI), coronary revascularization, stroke)
- Follow-up
- 5 years
Methodological detailssingle-institution, propensity-score matched (1:1)
- Single-institution
- Propensity-score matched (1:1)
Main finding
As reported in the abstract
Survival and MACCE
5-year survival
5-year MACCE
Observational data: associations, not effects.
Further findings
MACCE after 1-year follow-up
Repeat revascularization · 5 years
Repeat revascularization in territory grafted by RA at index operation · 5 years
Safety
Immediate postoperative complications
- No significant differences
Original publication
Radial artery vs right internal mammary artery as a second conduit during coronary artery bypass grafting. Am Heart J. Published 20 January 2024. doi:10.
Summarised from the published abstract; every number is checked against it