Final answer:
The maternal-newborn RN should care for the client who is one-day postoperative from a total abdominal hysterectomy, as their skills align with post-surgical care.
Step-by-step explanation:
The charge nurse on the medical-surgical unit should assign the RN from the maternal-newborn unit to care for the client who is one-day postoperative following a total abdominal hysterectomy. This choice is the most suitable because the skill set of a maternal-newborn nurse aligns more closely with post-surgical care and monitoring for complications, rather than managing the complex needs of a client with terminal end-stage renal disease, acute pancreatitis, or a recent stroke, all of which may require a specialized set of skills more commonly found in nurses with medical-surgical or intensive care experience.