A Nurse Is Ordered to Apply a Transcutaneous Electrical Nerve

A nurse is ordered to apply a transcutaneous electrical nerve stimulation (TENS) unit to a client recovering from abdominal surgery. Which of the following is a consideration when using this device?

A) TENS is an invasive technique for providing pain relief.
B) TENS involves the electrical stimulation of large-diameter fibers to inhibit the transmission of painful impulses carried over small-diameter fibers.
C) TENS is most beneficial when used to treat pain that is generalized.
D) A TENS unit is applied intermittently throughout the day and should not be worn for extended periods of time.