Figure 1-
Ultrasound landmarks for arm alternative arterial access sites. A. Brachial artery. B. Ulnar artery. C. Distal radial artery. Red dotted circle, artery. Green dotted circle, nerve. Blue dotted circle, vein.
Figure 2
Angulated segment of the distal radial artery which should be avoided during puncture. Blue dotted circle, cephalic vein.