Which actions best mitigate line noise artifact on telemetry?

Which actions best mitigate line noise artifact on telemetry?

• A. Reattach leads.
• B. Remove the leads and restart the monitor.
• C. Reattach leads, avoid electrical interference, and ensure good contact.
• D. Ignore the artifact and proceed.

Answer: (C)

Line noise on telemetry usually comes from a poor skin–electrode connection or from nearby electrical interference. The best approach is to reattach the leads to ensure solid contact and to minimize interference: verify the skin is clean and dry, ensure the electrodes and connectors are firmly attached and not damaged, and provide fresh conductive contact as needed. At the same time, reduce electrical noise sources by keeping leads and the monitor away from power cords or other equipment, using the monitor on battery if available, and turning off unnecessary devices nearby. This combination directly addresses both common causes of line noise and is more effective than simply restarting the monitor or ignoring the artifact.

Line noise on telemetry usually comes from a poor skin–electrode connection or from nearby electrical interference. The best approach is to reattach the leads to ensure solid contact and to minimize interference: verify the skin is clean and dry, ensure the electrodes and connectors are firmly attached and not damaged, and provide fresh conductive contact as needed. At the same time, reduce electrical noise sources by keeping leads and the monitor away from power cords or other equipment, using the monitor on battery if available, and turning off unnecessary devices nearby. This combination directly addresses both common causes of line noise and is more effective than simply restarting the monitor or ignoring the artifact.