Final answer:
For a patient with dehydration symptoms due to vomiting and diarrhea, the nurse would administer ondansetron (Zofran) to prevent further nausea and vomiting after starting IV fluids. Option b.
Step-by-step explanation:
A client experiencing vomiting and diarrhea for 2 days with signs of dehydration would benefit from administration of a medication to control nausea and vomiting. Since the blood pressure is low and pulse is high, indicating dehydration, the nurse would likely administer ondansetron (Zofran), which is used to prevent nausea and vomiting. Ondansetron is often used in clinical settings for patients who are dehydrated and experiencing emesis, as seen in this case.
The nurse would administer ondansetron (Zofran) as the next prescribed prn medication. Ondansetron is commonly used to prevent nausea and vomiting caused by various conditions, including gastroenteritis. Since the client is experiencing vomiting and diarrhea, ondansetron can help alleviate these symptoms and prevent further dehydration. It is important to note that the other options listed (magnesium hydroxide, loperamide, and meperidine) are not appropriate for the client's current symptoms and condition.