[...]access site complications are consistently lower with RA than FA, as would be expected. Based on these new studies the answer appears to be yes. [...]this transition from preferred FA to preferred RA for PPCI for STEMI represents a natural evolution of strategies aimed at improving safety of coronary interventions.
Applegate, R. J. (2014, March 18). Radial access for primary percutaneous coronary intervention for ST-segment elevation myocardial infarction: Time for a paradigm shift? Journal of the American College of Cardiology. Elsevier USA. https://doi.org/10.1016/j.jacc.2013.09.066