A nurse is reviewing a provider's prescriptions for four clients. Which of the following prescriptions is outside the legal scope of practice for the nurse?

Inserting a tunneled central venous catheter is a surgical procedure that is outside the legal scope of practice for a registered nurse. Tunneled central venous catheters — such as Hickman or Broviac catheters — require surgical placement and are performed by a physician or advanced practice provider under sterile conditions, often in an interventional radiology suite or operating room. A registered nurse does not have the authority or training to independently insert this type of device. The other prescriptions listed are well within the scope of nursing practice. Performing a type and cross match involves collecting a blood specimen and labeling it correctly, which nurses routinely perform. Completing a Glasgow Coma Scale assessment is a standard neurological nursing assessment. Providing initial diabetes education for a client with type 1 diabetes mellitus is squarely within the nurse's scope as patient teaching is a core nursing responsibility. The key distinction is that inserting a tunneled catheter is an invasive surgical intervention requiring physician-level competency and cannot be delegated to or performed by a bedside nurse, regardless of a provider's prescription.