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Ann Thorac Surg 2007;84:686-687
© 2007 The Society of Thoracic Surgeons

How To Do It

Three-Digit Allen’s Test

Mohammed Asif, FRCS*, Pradip K. Sarkar, FRCS

Department of Cardiothoracic Surgery, Northern General Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom

Accepted for publication November 13, 2006.

* Address correspondence to Dr Asif, Department of Cardiothoracic Surgery, Northern General Hospital, Herries Road, Sheffield, S5 7AU, United Kingdom (Email: m.asif{at}ntlworld.com).

Hand ischemia after radial artery intervention remains a rare but serious complication. Allen’s test is widely used to assess the adequacy of ulnar collateral circulation to the hand. There have been documented cases of hand ischemia after radial artery intervention even with a negative test. We describe a modification of Allen’s test based on the anatomy of the radial artery branches that could potentially decrease the number of false negative tests.




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