A client with persistent low back pain has received a prescription for an electronic stimulator (TENS) unit. After the nurse applies the electrodes and turns on the power, the client reports feeling a tingling sensation. How should the nurse respond?

A. Check the amount of gel coating on the electrodes: While proper electrode contact is important for effective TENS therapy, a tingling sensation is an expected effect and usually indicates the unit is functioning correctly. Excess gel is unlikely to be the cause of normal tingling. B. Determine if the sensation feels uncomfortable: Tingling is the desired sensation when using a TENS unit for pain management. The nurse should assess the client’s comfort level to ensure the intensity is tolerable and adjust settings if necessary, prioritizing client safety and comfort. C. Remove electrodes and observe for skin redness: Removing the electrodes is not warranted for a normal tingling sensation. Skin inspection is typically done after treatment or if irritation occurs, not as an initial response to tingling. D. Decrease the strength of the electrical signals: Reducing intensity is only necessary if the client reports discomfort. A mild tingling sensation is expected and indicates proper stimulation, so immediate adjustment is unnecessary unless the client is experiencing pain or distress.