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Eur J Cardiothorac Surg 2003;23:432-434
© 2003 Elsevier Science NL

Case report

Reversal of radial artery ‘string sign’ at 6 months follow-up

Departments of Cardiovascular Surgery and Cardiology, Ospedali Riuniti di Bergamo, Bergamo, Italy

Received 16 September 2002; received in revised form 29 October 2002; accepted 11 November 2002.

^* Corresponding author. U.O. Cardiochirurgia, Ospedali Riuniti di Bergamo, Largo Barozzi 1, Bergamo 24100, Italy. Tel.: +39-035-269322; fax: +39-035-266662
e-mail: terzia{at}cyberg.it

The clinical importance of radial artery string sign is still debated. We present a case of reversal of radial artery string sign in 6 months with concomitant involution of competitive flow arising from an important collateral coronary circulation to an occluded right coronary artery. The hypothesis that the string sign is an extreme form of autoregulation of the radial artery is confirmed, and the flow reserve of this conduit is emphasized.

Key Words: Radial artery • String sign • Reversal

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