Figures
Figure 1: Voltage map of the left atrium (posterior view) recorded during sinus rhythm on the left and atrial fibrillation on the right using the Advisor™ HD Grid Mapping Catheter, Sensor Enabled™ (“HD Grid”, Abbott, St. Paul, MN, USA) catheter. Regions of lower voltage are seen in the posterior wall during atrial fibrillation which is not evident during sinus rhythm. This corresponds to lower amplitude waveforms recorded and shown at the bottom of the image during atrial fibrillation when compared to sinus rhythm.