In a bipolar lead, where is the cathode located?

In a bipolar lead, the cathode is located a few centimeters from the tip of the lead. This design is crucial for the functionality of pacing systems, as it allows for better localized stimulation of the myocardium while minimizing the potential for capturing unwanted nearby tissues.

The positioning of the cathode at a certain distance from the tip helps create a more effective electric field. The anode, which is typically located at the tip, works in tandem with the cathode to ensure optimal pacing. The configuration allows for improved biocompatibility, reduced noise, and enhanced pacing thresholds, making it essential for the effectiveness of cardiac pacing systems.

In this way, knowing the precise locations of the anode and cathode in bipolar leads is vital for understanding how they work together to deliver effective stimulation to the heart.