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[Comment] Cardiac catheterisation: radiation for radialists

Since the introduction of radial artery access for cardiac catheterisation in the early 1990s by Campeau and Kiemeneij,1,2 more than 20 years have passed before it has been acknowledged as the preferred technique for coronary angiograms and percutaneous coronary intervention (PCI). A published trial and subsequent meta-analysis of all randomised trials published since the RadIal Versus femorAL (RIVAL) study3 comparing radial artery with femoral artery access site in patients with acute coronary syndromes showed that the radial artery route resulted in a reduction in major bleeding and all-cause mortality.