The LPN/LVN observes a student nurse (RN) add IV solution to the existing tubing of a client's IV. The LPN/LVN should intervene if which action is observed?1. The student matches the bag label with the original orders.2. The student starts to mark the time on the IV bag with a permanent marker.3. The student inserts the tubing with the bag hanging.4. The student checks the venipuncture insertion site.

The student starts to mark the time on the IV bag with a permanent marker.

Explanation:

The key word in the question is "should intervene". Intervention is only needed if there is a complication or if an action is capable of leading to a complication. From the options, the use of a permanent marker can contaminate the solution and hence the LPN/LVN must intervene and instruct the student nurse to use a time tape instead to mark the time.

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