In electrotherapy, what term describes the substance that facilitates the transmission of electrical current from the electrodes to the skin?

In electrotherapy, what term describes the substance that facilitates the transmission of electrical current from the electrodes to the skin?

• A. Coupling Medium
• B. Conductive Gel
• C. Insulator
• D. Adhesive Pad

Answer: (A)

In electrotherapy, current must move efficiently from the electrode into the skin, which requires a bridging material at the interface. This bridging substance is the coupling medium, whose job is to lower the impedance between electrode and skin so the current can flow smoothly. Conductive gel is a common form of this medium, used to improve contact, but the general term is coupling medium. An insulator would impede conduction, and an adhesive pad mainly helps keep the electrode in place rather than enhance transmission.

In electrotherapy, current must move efficiently from the electrode into the skin, which requires a bridging material at the interface. This bridging substance is the coupling medium, whose job is to lower the impedance between electrode and skin so the current can flow smoothly. Conductive gel is a common form of this medium, used to improve contact, but the general term is coupling medium. An insulator would impede conduction, and an adhesive pad mainly helps keep the electrode in place rather than enhance transmission.