Europace Advance Access published online on December 3, 2008
Europace, doi:10.1093/europace/eun327
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SHORT COMMUNICATION
Intermittent rate-dependent retrograde conduction over a concealed atrioventricular accessory pathway: what is the mechanism?
Department of Cardiology, IRCCS Fondazione Policlinico S. Matteo, P.le Golgi 19, 27100, Pavia, Italy
Intermittent retrograde conduction over an accessory pathway (AP) is quite an uncommon phenomenon. We describe the case of a 60-year-old woman with recurrent episodes of palpitations. Atrioventricular re-entry tachycardia was diagnosed at electrophysiological study. Interestingly, retrograde conduction over the AP was detectable only when ventricular pacing was performed at fast rate. Supernormal retrograde conduction over the AP was considered the most likely explanation of this unusual finding.
* Corresponding author. Tel: +39 0382 501 276, Fax: +39 0382 503 161, Email: r.rordorf{at}smatteo.pv.it