Why is monitoring the pacing threshold important in cardiac patients?

Monitoring the pacing threshold is crucial because it ensures that the pacing system is delivering appropriate mechanical support to the heart when needed. The pacing threshold indicates the minimal amount of electrical energy required to successfully depolarize the heart muscle and evoke a contraction. If the pacing threshold is set too low, there might not be enough energy delivered, potentially leading to inadequate heartbeats and reduced cardiac output. Conversely, if it is set too high, the device may cause unnecessary battery depletion and discomfort to the patient. Therefore, continuous monitoring of the pacing threshold allows for adjustments that can enhance the efficacy of cardiac pacing, ensuring that the patient receives optimal mechanical support and maintaining their cardiovascular stability.