HealthDay News – The 20-year patency rate is good for patients who use the radial artery as a coronary bypass conduit, according to research published in the August 9 issue of the Journal of the American College of Cardiology.

Mario Gaudino, MD, from the Catholic University in Rome, and colleagues presented 20-year results of radial artery grafts used for coronary artery bypass grafting in the first 100 patients who received the radial artery as a coronary bypass conduit.

Researchers found that there were 64 deaths, 35.9% of which were from cardiovascular causes. Twenty-year survival was 31%. Overall, 91.6% of the 36 survivors underwent radial artery graft control at a mean of 19.0 ± 2.5 years after surgery. Radial artery patency was 84.8%. 


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The probability of graft failure was 19.0% ± 0.2% for the left internal thoracic artery, 25.0% ± 0.2% for the radial artery, and 55.0% ± 0.2% for the saphenous vein in the overall population at 20 years (P=.002 for radial artery vs saphenous vein; P=.11 for radial artery vs internal thoracic artery; and P<.001 for internal thoracic artery vs saphenous vein). Target vessel stenosis >90% significantly influenced long-term graft patency, but location of distal anastomosis did not.

“The 20-year patency rate of radial artery grafts is good, and not inferior to the internal thoracic artery, especially when the conduit is used to graft a vessel with >90% stenosis,” the authors wrote.

References

  1. Guadino M, Tondi P, Benedetto U, et al. Radial artery as a coronary artery bypass conduit. 20-year results. J Am Coll Cardiol. 2016;68(6):603-610. doi: 10.1016/j.jacc.2016.05-062.
  2. Ruel M, Voisine P. The radial artery graft. Clinical or subclinical benefits? J Am Coll Cardiol. 2016;68(6):611-613. doi: 10.1016/j.jacc.2016.06.002.