Final answer:
The nurse should assess the client's symptoms and focus on preventing or treating dehydration by encouraging fluid intake and possibly administering intravenous fluids if necessary. Prescribed PRN anti-emetics would not be appropriate for diarrhea alone.
Step-by-step explanation:
If a client has had several episodes of clear, watery diarrhea that started yesterday, the nurse should first assess the severity of the symptoms, including the frequency of the diarrhea and whether the client is showing signs of dehydration. Since dehydration is a major concern with excessive diarrhea, the nurse should implement measures to prevent or treat it. This involves encouraging the intake of fluids, possibly recommending an oral rehydration solution to replenish lost electrolytes, and monitoring the client's vital signs and overall condition.
If the client's condition does not improve or if the diarrhea is severe, intravenous fluids may be necessary. Administering a prescribed PRN anti-emetic would not address the primary symptom of diarrhea; it would be more appropriate if the client were experiencing excessive vomiting. It is important to accurately assess and address the client's symptoms to provide effective nursing care.