Left bundle branch area pacing: A new era of cardiac resynchronization therapy?

Figure 1 Left ventricle activation time is the time from the pacing artifact to the peak R wave in V6. The difference between V6 and V1 R-wave peak times is the interpeak interval. It helps clinicians distinguish between selective and non-selective left bundle branch area pacing and septal pacing. The larger the interval, the less selective the catheter will be with respect to the conduction system.