Ultrasound-guided distal transradial access for cardiac catheterization: Technical notes for the interventionalist.

Over the latest years, the use of distal radial access (dTRA), also called "snuffbox," has become more and more popular for cardiac catheterization. Indeed, dTRA has several advantages compared to the traditional proximal radial approach, such as a lower risk of hand ischemia, radial artery occlusion (RAO) and faster post-procedural hemostasis. However, due to the presence of different muscular-skeletal structures, as well as to the small diameter of the distal radial artery (dRA), an ultrasound-guided cannulation would be preferred since a blind puncture increases the risk of tendon damage and/or the irritation of the underlying periosteum. The present article is aimed to provide the key tips for performing US-guided access using the dRA in patients undergoing percutaneous cardiac procedures.