Randomised Clinical Trial / Equivalence Model Permutted block asignation 1:1 Statistical Power 90% and Significance 2.5%. Sample Loss estimation - 15% Chi-square to categorical and T Student to numerical variables. Logistic regression binomial for adverse outcomes. If needed, an intention to treat analysis will be performed.
The investigators are conducting a randomized clinical trial, having as a primary objective, to compare vascular access time between distal and proximal radial approach. Secondary objectives include comparing incidence of distal and proximal radial artery occlusion, at 24 hrs and 30 days. As a tertiary objective investigators will compare the preference of the patients for each access in subsecuent interventional procedures.