What is a potential indicator of low resistance in cardiac leads?

A potential indicator of low resistance in cardiac leads is leaky currents. When the resistance in the lead system drops, it can cause a pathway for electrical currents to bypass the intended circuit, leading to undesired current flow. This phenomenon is particularly significant because it may indicate compromised lead integrity or insulation failure, which can affect the performance of a cardiac device. Detecting leaky currents helps clinicians assess lead function and determine if further intervention is necessary to ensure proper operation of the cardiac rhythm management system.

In contrast, increased threshold typically indicates a higher level of resistance or an issue within the lead system that impairs effective stimulation. Fractured wire refers to an actual physical break within the lead, while electrode failure usually relates to the specific failure of the electrode functionality. All these conditions represent different forms of lead dysfunction but do not directly signify low resistance in the same manner that leaky currents do.