From which part of the right ventricle were other pacing attempts made?

The low/mid RV septum is a crucial region for pacing attempts due to its proximity to the heart's conduction system, particularly the Bundle of His and its branches. This area is ideal for capturing the electrical activity that facilitates optimal ventricular contraction. When pacing leads are placed here, they can effectively stimulate the myocardium and help maintain a coordinated heart rhythm, which is especially important for patients with various types of heart block or other conduction disturbances.

Pacing from the low/mid RV septum can also promote a more physiological pattern of ventricular activation as it typically avoids potential issues associated with pacing from other locations, which may lead to abnormal contraction patterns or increased filling pressures. This region has become increasingly recognized for its beneficial outcomes in terms of both acute and long-term pacing efficacy.