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Assessment of collateral circulation to the hand prior to radial artery harvest.

Authors
Type
Published Article
Journal
Vascular Medicine
1358-863X
Publisher
SAGE Publications
Publication Date
Volume
17
Issue
5
Pages
352–361
Identifiers
DOI: 10.1177/1358863X12451514
PMID: 22814998
Source
Medline

Abstract

Assessment of collateral circulation to the hand is required prior to invasive procedures or harvesting of the radial artery (RA). A modified Allen's test (MAT) is commonly used to assess palmar arch collaterals. A variety of non-invasive methods including digital pressures, plethysmography, pulse oximetry and duplex ultrasonography are available to supplement physical examination. However, no consensus exists about the proper role of the MAT and the most appropriate non-invasive test (NIT) in this situation. Interpretation of the MAT and NIT findings are also controversial. This paper reviews the anatomy and the physiologic basis for the MAT and various NITs, the pros and cons of various NITs and recommendations for the assessment of collateral circulation to the hand prior to interventions directed at the RA.

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