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A male client has experienced low back pain for several years. He is the primary support of his wife and six children. Although he would qualify for disability, he plans to continue his employment as long as possible. His back pain has increased recently, and he is unable to control it with non-steroidal anti-inflammatory agents. He refuses surgery and cannot take narcotics and remain alert enough to concentrate at work. His physician has suggested application of a transcutaneous electrical nerve stimulation (TENS) unit. Which of the following is an appropriate rationale for using a TENS unit for relief of pain?
Correct Answer: C
Explanation/Reference: Explanation: (A) TENS units do not have this effect, but whirlpool therapy does. (B) TENS units do not produce endogenous opioids, only the body can do that. (C) TENS units do work based on the gatecontrol theory of pain control. (D) TENS units do not have this effect, but possibly changing the client's position would.