Para‐Hisian pacing: Beware what you capture.

The article discusses a case of a 78-year-old woman undergoing catheter ablation for atrial fibrillation and presumed cavo-tricuspid isthmus-dependent atrial flutter. The focus is on the para-Hisian pacing maneuver during the procedure, examining different paced QRS morphologies and their interpretation, highlighting the importance of confirming what is being captured by the pacing electrode and discussing the observed responses.