The nurse is converting a client's continuous IV infusion to a saline lock. Which of following is a recommended guideline for this procedure?
A) Stop the infusion and unclamp the tube to allow air to flow out of the line.
B) Replace the primary IV tubing with a PICC line.
C) Flush the lock with 2 to 3 mL of heparin every 4 hours to prevent clogging.
D) Flush the lock with 2 to 3 mL of saline every 8 hours or as ordered.
D
Feedback:
To reduce the possibility of clotting, the lock may be flushed with 2 to 3 mL of saline every 8 hours or as ordered. Heparin is no longer used to flush the lock. When converting to the lock, first, the infusion is stopped and the tube clamped with the slide clamp and the roller clamp to prevent air from entering the line and blood from escaping. Then the nurse removes the primary IV tubing from the extension device, unclamps the extension tube and flushes with the prescribed solution, reclamps the extension tube and removes the syringe. Finally, the nurse inserts the lock cap device firmly into the extension tubing and tapes it firmly in place.
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