What is the role of resistance when measuring pacing performance?

Resistance plays a crucial role in electrical circuits, including in pacing applications. When measuring pacing performance, resistance is significant because it influences the amount of current that flows through the circuit. High resistance in the pacing system can limit the current flow, which directly affects the pacing thresholds.

If the resistance is too high, it may lead to insufficient current being delivered to stimulate the myocardial tissue effectively, resulting in poor pacing performance. This can manifest as failing to capture the heart or irregular pacing. Therefore, understanding resistance is vital for optimizing pacing parameters to ensure that adequate current is available to achieve consistent and reliable heart contractions.