Final answer:
The child weighing 15 kg would need a total dose of 1500 mcg of ondansetron.
Step-by-step explanation:
The student asked how much ondansetron is needed for a child weighing 15 kg if the prescribed dose is 100 mcg per kilogram of body weight.
To calculate the total dose required, you multiply the child's weight by the dose per kilogram.
In this case, it would be:
15 kg × 100 mcg/kg = 1500 mcg
The child would need a 1500 mcg dose of ondansetron. Ondansetron, also known as Zofran, is a medication commonly used to prevent nausea and vomiting associated with cancer treatments, such as chemotherapy or radiation therapy, and following surgery.