What effect might occur after ablating GPs during a WACA line procedure?

Ablation of ganglionated plexi (GPs) during a WACA line procedure can lead to a decrease in heart rate. GPs are clusters of autonomic nerves that play a role in regulating heart rate and cardiac autonomic tone. When these areas are ablated, the parasympathetic influence on the heart can be diminished, which often results in a reduction in heart rate.

This reaction is particularly important in the context of atrial fibrillation management, as autonomic modulation is a significant factor in the development and persistence of this arrhythmia. In cases where there is excessive sympathetic activity, ablation can help restore a more balanced autonomic environment, potentially reducing heart rate and improving overall heart function. This understanding is crucial for practitioners aiming to optimize outcomes in patients with atrial fibrillation through catheter ablation therapies.