Review Article

Atrioventricular Accessory Pathways: Mechanisms, Electrocardiograms, and Associated Arrhythmias

An atrioventricular accessory pathway (AP) may be manifest or concealed. When manifest, it leads to preexcitation on the baseline electrocardiogram, which is called the Wolff-Parkinson-White pattern. The degree of preexcitation varies according to the relative conduction speed of the atrioventricular node versus the AP, the AP location, and the AP…