Which electrode placement allows for easier visibility of COI and sensing?

The placement of the black tip to the cathode is optimal for easier visibility of the Conduction System Pacing (CSP) signal and for improved sensing capability. In this configuration, the black tip serves as the active electrode or sensor, allowing for better conductivity and signal capture from the myocardium. The cathode can enhance the quality of the electrical signal received, making it more detectable against the background noise present in the heart's electrical activity.

When electrodes are positioned correctly, it maximizes the chances of capturing the intrinsic electrical signals of the conduction system, which is crucial for accurate diagnosis and effective pacing. In CSP, this enhanced visibility is essential for proper assessment of the pacing thresholds and ensuring effective temporal synchronization with the heart's natural rhythms.

The other options do not provide the same advantages in terms of signal visibility and sensing efficacy, as they either do not enhance the direct connection to the cardiac conduction pathway or may lead to more noise or less clarity in the signals acquired. By focusing on optimal electrode placement, specifically with the black tip toward the cathode, practitioners can ensure more reliable pacing and sensing results.