The Nurse Is Caring for a Client with a Central

The nurse is caring for a client with a central venous catheter used for intermittent medication administration.When flushing the catheter prior to administering the next dose of medication,which initial action by the nurse is the most appropriate?

A) Aspirating the catheter for blood
B) Obtaining a 3 mL syringe and filling it with normal saline for flushing the line
C) Flushing the catheter,using as much force as required in order to clear the line
D) Positioning the client in reverse Trendelenburg position