Computed tomography showed that the left distal brachial artery and the proximal part of the radial and ulnar arteries were obstructed, whereas a short segment of the ulnar artery
was re-canalized (Figure 1).
The procedure employs the introduction of a magnetic catheter into the ulnar artery
via the brachial artery, aligning a ceramic backstop in that catheter.
Intravascular administration of the corticosteroid into the ulnar artery
was suspected in this case.
In our patient, we excised the aneurysmal sac and ligated the radial artery due to the positive Allen's test that confirmed the ulnar artery
dominancy and findings of intraoperative Doppler ultrasound.
The most frequently used site for arterial cannulation is redial artery because of it superficial location, presence of collateral blood flow through the ulnar artery
and hence lower rate of complications.
The radial pulses were palpable bilaterally (2+) and the left ulnar artery
was palpable, but diminished (1+).
During routine dissection of the right upper limb of a 55-year-old male cadaver, we observed that the superficial palmar arch (SPA) is formed by the ulnar artery
and completed by the first dorsal metacarpal artery.
A doppler ultrasound revealed stenosis of right ulnar artery
, about 2 cm from its origin.
Both types usually originate from the proximal segment of the ulnar artery
(arteria ulnaris), from the common interosseous artery (arteria interossea communis) or from the anterior interosseous artery (arteria interossea anterior).
Thorough and complete scanning of the RA was done starting just after ulnar artery
branching (proximally) up to the wrist (distally).
It is especially important to understand these variations in order to avoid misdiagnosing forearm pathology, as described by McWilliams et al (27), when a variant superficial ulnar artery
was clinically mistaken for phlebitis.
While the radial artery is the primary option, the ulnar artery
on the opposite side of the wrist is a viable option in some cases.