A nurse is preparing to administer digoxin 225 mcg for a pediatric client who has a heart rate above 90/min. Which of the following actions should the nurse take to ensure administration of the right dose?
1) Validate that the dosage is within the safe range.
2) Confirm the medication amount is appropriate for the child.
3) Verify that the medication is not expired.
4) Check the client's heart rate prior to administration.
5) Document the administration in the medication administration record.