A 65-year-old male patient with hypertension was recently started on a new antihypertensive medication. During the evaluation phase of the nursing process, which action should the nurse prioritize?

Review the patient's medication history for any potential drug interactions.

Educate the patient about the potential side effects of the new medication.

Document the patient's baseline blood pressure before starting the medication.

Assess the patient's blood pressure to determine if the medication is effective.