Final answer:
The nurse should report abnormal heart rhythms as a side effect of ramelteon to the healthcare provider.
Step-by-step explanation:
The nurse should report abnormal heart rhythms as a side effect of ramelteon to the healthcare provider. Abnormal heart rhythms, or arrhythmias, can be a serious side effect that may require immediate medical attention. It is important to monitor and address any changes in heart rhythm in patients taking ramelteon.