What action should be taken if an EKG detects alternating current interference?

When an EKG detects alternating current interference, the appropriate action is to unplug nearby electrical devices. Alternating current interference can stem from electromagnetic interference caused by devices like computers, monitors, and other electrical equipment in close proximity to the EKG machine. This interference can lead to poor-quality readings and distortions in the EKG tracings.

By unplugging nearby devices, you minimize the presence of these electrical signals, allowing for a clearer and more accurate assessment of the heart's activity. This action directly addresses the source of interference, ensuring that the EKG machine can function properly without external disruptions, leading to more reliable results.

In contrast, changing the electrodes or leads would not necessarily resolve the underlying issue of external interference. Calibrating the machine is important for maintaining accuracy but does not directly target the problem of alternating current interference. Therefore, unplugging nearby electrical devices is the most effective first step in addressing this specific type of interference during an EKG procedure.