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Ulnar artery
In this article we will discuss about Ulnar artery. So let’s get started.
Ulnar artery
Origin and Termination
Originates from the brachial artery and terminates in the superficial palmar arch.
Branches
Anterior ulnar recurrent artery
Posterior ulnar recurrent artery
Common interrosseus artery
Palmer carpal branch of ulanar artery
Dorsal carpal branch of ulanar artery
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Allen Test
Appeared in the June 2008 NP1 version of the PNLE
Before drawing ABGs from the the radial artery, perform the ALLEN TEST to assess collateral circulation.
1. Make the client's hand blanch by obliterating both the radial and the ulnar pulses.
2. Release the pressure over the ulnar artery only.
3. If flow through the ulnar artery is good, flushing will be seen immediately. The ALLEN TEST is then POSITIVE, and the radial artery can be used for puncture.
4. If the ALLEN TEST is negative, repeat on the other arm. If this test is also negative, seek another site for arterial puncture. THE ALLEN TEST ENSURES COLLATERAL CIRCULATION TO THE HAND IF THROMBOSIS OF THE RADIAL ARTERY SHOULD FOLLOW THE PUNCTURE.
