Which Should the Nurse Do to Identify Medication Errors in a Patient's

Which should the nurse do to identify medication errors in a patient's order? (Select all that apply.)

A) Clarify anything that is unreadable.
B) Check the order in a medication Kardex.
C) Clarify vague orders with the prescribing physician.
D) Ask the patient about the medication.
E) Identify the medication with an old medication record.