Your client is going out on pass for the afternoon with his family. The physician has ordered that his venipuncture device needs to be temporarily capped. How will you ensure that the vein remains patent?
A) Flush the lock with potassium chloride.
B) Flush the lock with saline or heparinized saline.
C) Flush the lock with cyclical total parenteral nutrition (TPN).
D) Flush the lock with colloid solutions.
B
Feedback:
When a venipuncture device is temporarily capped, the vein is kept patent by flushing the lock with saline or heparinized saline. Deaths have occurred when potassium chloride has been used incorrectly to flush a lock. TPN solutions are used to provide nutrition, and colloid solutions are used to replace circulating blood volume; these solutions are not used to flush locks.
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