| Autor: |
van Staveren LN; Department of Cardiology, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands., van der Does WFB; Department of Cardiology, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands., Heida A; Department of Cardiology, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands., Taverne YJHJ; Department of Cardiothoracic Surgery, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands., Bogers AJJC; Department of Cardiothoracic Surgery, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands., de Groot NMS; Department of Cardiology, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands. |
| Abstrakt: |
We investigated whether patterns of activation at Bachmann's bundle are related to AF inducibility. Epicardial mapping of Bachmann's bundle during sinus rhythm was performed prior to cardiac surgery (192 electrodes, interelectrode distances: 2 mm). Compared to non-inducible patients ( N = 20), patients with inducible AF ( N = 34) had longer lines of conduction block (18(2-164) mm vs. 6(2-28) mm, p = 0.048), prolonged total activation time (55(28-143) ms vs. 46(24-73) ms, p = 0.012), multiple wavefronts entering Bachmann's bundle more frequently (64% vs. 37%, p = 0.046) and more often areas of simultaneous activation (conduction velocity > 1.7 m/s, 45% vs. 16%, p = 0.038). These observations further support a relation between conduction abnormalities at Bachmann's bundle and AF inducibility. The next step is to examine whether Bachmann's bundle activation patterns can also be used to identify patients who will develop AF after cardiac surgery during both short- and long-term follow-up. |
