Final answer:
In the context of post-hemodialysis assessment, restlessness is a priority finding to report because it may indicate a severe complication like dialysis disequilibrium syndrome.
Step-by-step explanation:
A nurse is assessing a client following the completion of hemodialysis. The priority finding to report to the provider among the options would be 'A. Restlessness.' Post-dialysis, the patient should be monitored for signs of hemodynamic instability, such as changes in blood pressure and heart rate, along with neurological symptoms like restlessness. Restlessness might be a symptom of a serious complication such as dialysis disequilibrium syndrome (DDS), which is a rare but potentially fatal condition caused by cerebral edema and increased intracranial pressure. Blood pressure (BP) of 100/70 may not be immediately concerning unless it represents a significant change from the patient’s baseline or is symptomatic. Weight loss is expected following hemodialysis due to the removal of excess fluid. A temperature of 99 F is slightly elevated but is not as immediately concerning as neurological changes that may suggest a severe complication.