Incidence and predictors of radial artery occlusion after transradial coronary catheterization.

Background: Radial artery occlusion (RAO) is considered the most common and devastating complication of transradial approach (TRA). It has been described as the "Achilles' heel" of the transradial technique. Our aim was to assess the incidence and predictors of radial artery occlusion after transradial coronary catheterization.