Left-Sided Accessory Pathways with Atrioventricular Node-Like Properties in the Wolff-Parkinson-White Syndrome

Submit Manuscript | http://medcraveonline.com J Cardiol Curr Res 2015, 4(3): 00145 in right-sided pathways, we have previously demonstrated in the study of 55 patients with left-sided AP [12], that 7% of anterograde conduction and 15% of retrograde conduction had decremental conduction over the AP with a maximal decrement of ≥30 ms [12]. Nevertheless, we have found that an additional 27% of the left-sided AP in the anterograde direction, and 29% in the retrograde direction had minimal decremental conduction of less than 30 ms [12]. Therefore, our electrophysiological studies revealed that it is not uncommon to observe minimal decremental conduction over left-sided AP, and stress that care should be taken in the evaluation of conduction over these connections.