What common problem is indicated by a lead with low resistance?

A lead with low resistance often indicates an insulation breach. When the insulation of a lead is compromised, it can create a pathway for electrical current that should not be present, leading to lower resistance readings. This situation poses a significant clinical risk, as it can result in inappropriate sensing or pacing due to crosstalk with surrounding tissues or malfunction of the device. In contrast, excessive battery charge, a stable connection, and a lack of concern for current flow would not typically be associated with low resistance conditions. Hence, recognizing low resistance as a sign of potential insulation breach is critical for maintaining device integrity and patient safety.