Final answer:
Restlessness after hemodialysis is a sign that must be reported to a provider immediately as it could signify a serious complication like disequilibrium syndrome.
Step-by-step explanation:
The nurse's priority to report to the provider following the completion of hemodialysis is D.Restlessness. Restlessness may indicate a serious complication such as disequilibrium syndrome, which can occur due to the rapid removal of solutes from the body during dialysis, leading to cerebral edema. While the other findings (temperature of 37.2° C, blood pressure of 100/70 mm Hg, and weight loss) are important to note, they are within normal limits or expected post-dialysis changes. Immediate attention and intervention may be required for the symptoms of restlessness to prevent further complications.