Problem: A nurse is caring for a 15-year-old client with cystic fibrosis who has been prescribed dornase alfa. What instruction should the nurse give the client? Question options: A) Expect a headache after each use, due to vasodilation. B) Use in home nebulizer up to every four hours. C) Avoid taking other drugs within 2 hours of dornase alfa. D) Store the drug in the refrigerator, protected from light.