A nurse is educating the parents of a pediatric patient who recently had a ventriculoperitoneal (VP) shunt placed to treat hydrocephalus. Which statement by the parents indicates the most critical understanding about care and potential complications?

We should limit physical activity and keep the child in bed to prevent dislodging the shunt.

If the child develops a fever, we can give over-the-counter fever reducers and only call the doctor if it persists more than 3 days.

We will need to flush the shunt regularly at home to keep it from clogging.

We will watch closely for sudden vomiting headache, or changes in behavior and notify the provider immediately if these occur.