If skin contact is slipping or electrodes have poor contact during a session, what is the best action?

• A. Replace the device battery
• B. Reapply more gel and reposition electrodes
• C. Increase amplitude to compensate
• D. Ignore and continue

Answer: (B)

When skin contact slips or the electrode-skin interface is poor, the key is to restore a stable, low-impedance connection. Electrical current flows best where the contact is solid and evenly distributed; gaps or drying gel raise impedance, concentrating current and increasing the risk of hotspots and skin irritation or burns, while also reducing treatment effectiveness.

So the best action is to reapply conductive gel and reposition the electrodes to reestablish a uniform, snug contact with clean, dry skin. Check that there are no air gaps, that the gel covers the active area properly, and that the electrodes are placed with appropriate spacing and orientation. If after re-gel and repositioning the contact remains poor, troubleshoot further rather than increasing the output, since higher amplitude can worsen skin effects without solving the underlying impedance issue.