Abstract
The conventional mapping approach for atrioventricular accessory pathways (APs) involves point-by-point mapping to identify the connection sites of the AP to the atria or ventricle, or the site where the AP potential is recorded. However, this approach requires an accurate interpretation of local electrograms. Some earlier reports have shown the efficacy of open-window mapping (OWM) for localizing the AP.1,2 The accuracy of the OWM may be enhanced by a novel multispline mapping catheter (Octaray, Biosense–Webster, Inc., Diamond Bar, CA).
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