A patient is beginning treatment for pain with a transcutaneous electrical nerve stimulator (TENS) unit.
The nurse will initially:.

Choice A rationale:
Patient-controlled analgesia (PCA) is a method of pain management that allows the patient to administer their own pain medication within specified limits, but it doesn't reduce the workload of the nurse. The nurse is responsible for setting up and monitoring the PCA pump, educating the patient, assessing their pain, and ensuring safety. Therefore, this choice is incorrect.
Choice B rationale:
PCA does not completely eliminate pain. It provides the patient with control over their pain relief by allowing them to self-administer medication within preset limits. However, it does not guarantee the complete absence of pain. Pain relief is provided within a safe dosage range, but some level of pain may still be experienced. Therefore, this choice is incorrect.
Choice C rationale:
PCA does not eliminate the risk of adverse drug effects entirely. The nurse must monitor the patient for signs of adverse effects, such as respiratory depression or sedation. While the patient has control over medication administration, there are still risks associated with opioid analgesics. Therefore, this choice is incorrect.
Choice D rationale:
The principal advantage of using patient-controlled analgesia (PCA) is that it reduces patient anxiety about pain by giving the patient more control over its management. This choice is correct because PCA empowers the patient to self-administer pain medication when needed, which can lead to better pain control and reduced anxiety. The nurse sets safe dosage limits and monitors the patient, ensuring safety while providing a sense of control.

Choice A rationale:
Perception is one of the phases of nociceptive pain. It involves the awareness of pain, where the brain recognizes and interprets the pain signals. During this phase, the individual becomes conscious of the painful sensation.
Choice B rationale:
Transmission is another phase of nociceptive pain. It involves the propagation of pain signals from the site of injury or damage to the central nervous system. Nerve fibers carry the pain signals to the spinal cord and brain for processing.
Choice D rationale:
Modulation is also a phase of nociceptive pain. It refers to the body's ability to modify or regulate the pain signals. This can involve the release of endorphins or other natural pain-relieving substances that help dampen the pain perception.
Choice E rationale:
Transduction is the last phase of nociceptive pain. It is the process where the noxious stimulus (injury or damage) is converted into electrical nerve signals that the body can understand. This conversion allows the pain signal to travel through the nervous system.
Choice C rationale:
Translation is not typically considered one of the phases of nociceptive pain. While translation may refer to the process of converting one form of information to another, it is not a recognized phase in the context of pain perception.