Which of the following is NOT a standard electrical safety measure for PSG equipment?

Which of the following is NOT a standard electrical safety measure for PSG equipment?

• A. The application of a ground lead wire placed on the head for the PSG
• B. Checking the condition of wires to assure none are frayed or damaged
• C. The application of a ground placed with the pulse oximetry probe
• D. Keeping liquid away from all electrical components

Answer: (C)

Electrical safety in PSG work hinges on having a proper, isolated grounding setup, keeping cables intact, and keeping liquids away from any electrical parts. Grounding is used to provide a stable reference and a safe path for leakage currents, and it is typically implemented through a designated ground lead attached to the head or another approved site as part of the PSG sensor setup. Attaching a ground to the pulse oximetry probe is not a standard or recommended practice because it creates an unnecessary and potentially unsafe ground path that can introduce noise or unwanted current through devices not designed to share that ground. The other practices—ensuring a ground lead is properly placed, inspecting wires for fraying or damage, and keeping liquids away from electronics—are all standard safety measures.

Electrical safety in PSG work hinges on having a proper, isolated grounding setup, keeping cables intact, and keeping liquids away from any electrical parts. Grounding is used to provide a stable reference and a safe path for leakage currents, and it is typically implemented through a designated ground lead attached to the head or another approved site as part of the PSG sensor setup. Attaching a ground to the pulse oximetry probe is not a standard or recommended practice because it creates an unnecessary and potentially unsafe ground path that can introduce noise or unwanted current through devices not designed to share that ground. The other practices—ensuring a ground lead is properly placed, inspecting wires for fraying or damage, and keeping liquids away from electronics—are all standard safety measures.