What should you advise a patient to do if their IV pump alarm disrupts their sleep?

Advising the patient to try to keep their arm straight is appropriate because doing so can minimize movement that may cause dislodgement of the IV catheter or blockage in the IV line. Maintaining a straight arm helps ensure that the flow of the IV fluid is uninterrupted, which is particularly important for the effectiveness of the treatment being administered. If the patient moves their arm frequently, it may lead to complications such as infiltration or phlebitis, which can cause discomfort and prolong their treatment.

In the context of the other options, alerting the nurse for frequent checks could lead to unnecessary disturbances, affecting the patient's ability to rest while remaining an inconvenience for the nursing staff. Telling the patient to continue moving their arm contradicts the need for stable IV placement, potentially leading to the complications mentioned earlier. Turning off the IV pump is not advisable without proper medical guidance, as it could disrupt the delivery of essential medications or fluids that the patient might need.