Europace Advance Access originally published online on August 4, 2009
Europace 2009 11(10):1396-1398; doi:10.1093/europace/eup211
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SHORT COMMUNICATIONS
Catecholamine challenge unmasking high-risk features in the Wolff–Parkinson–White syndrome
Massachusetts General Hospital, Cardiac Arrhythmia Service, GRB 109, 55 Fruit Street, Boston, MA 02114, USA
Risk stratification in patients with Wolff–Parkinson–White (WPW) syndrome is an important clinical problem given a small, but significant risk of sudden death. It has been widely accepted that intermittent pre-excitation is associated with a low-risk pathway. We report a case of WPW with intermittent pre-excitation at baseline, but with marked sensitivity to adrenergic stimulation, revealed by exercise and isoproterenol administration.
* Corresponding author. Tel: +1 617 726 5067, Fax: +1 617 726 3852, Email: dmilan{at}partners.org
Manuscript submitted 4 June 2009. Accepted after revision 8 July 2009.