A nurse is evaluating the laboratory values of a client who is receiving epoetin alfa. Which of the following findings indicates a therapeutic response to the medication?

A. Correct. The nurse should turn off the CPM machine during mealtime, as it can interfere with the client's ability to eat and drink comfortably. The nurse should also turn off the CPM machine when transferring or repositioning the client, or when performing wound care or other interventions on the affected leg.

B. Incorrect. The nurse should maintain the client's affected hip in a neutral position, as external rotation can cause malalignment of the prosthesis and impair healing. The nurse should use pillows or wedges to support the leg and prevent rotation or abduction of the hip joint.

C. Incorrect. The nurse should not instruct the client how to adjust the CPM settings, as this can compromise the prescribed range of motion and speed of the device. The nurse should follow the provider's orders and check with them before making any changes to the CPM settings. The nurse should also monitor the client's pain level and administer analgesics as needed to facilitate compliance with the therapy.

D. Incorrect. The nurse should not store the CPM machine under the client's bed when not in use, as this can pose a safety hazard and damage the equipment. The nurse should place the CPM machine on a stable surface near the bed and ensure that it is plugged into a grounded outlet and has adequate battery backup in case of power failure.

A. Instructing a staff member to maintain a log of emergency care provided is not the first action that the nurse should take. This is an important task, but it can be done later, after ensuring the safety of the staff and children and providing immediate care to those who need it.

B. Applying cervical spine collars to children who have suspected neck trauma is not the first action that the nurse should take. This is a priority intervention, but it can only be done after surveying the scene for potential hazards and making sure that it is safe to approach and touch the children.

C. Notifying guardians of the emergency and injuries to their children is not the first action that the nurse should take. This is a necessary step, but it can be delegated to another staff member or done after providing initial care to the children.

D. Surveying the scene for potential hazards to staff and children is the correct answer. This is the first action that the nurse should take, according to the principles of emergency care. The nurse needs to assess the situation and ensure that there are no dangers such as fire, electricity, gas, or falling debris that could harm anyone at the scene. The nurse also needs to determine how many children are injured, how severe their injuries are, and what resources are available to help them.