The nurse is preparing medications for a client with a history of hypertension who is post-op day 3 following hip replacement. Meds: Atenolol 25 mg PO, Captopril 10 mg PO, Glipizide 5 mg PO, and Warfarin 4 mg PO. Vital signs: blood pressure 138/90, heart rate 82, respiratory rate 18, temperature 99.7, O2 saturation 96% on room air. Today's labs: sodium- 143 meq/L, potassium 4.8 mmol/L, Hemoglobin 11.1 gm/dL, white blood count 10.8, blood glucose 130, INR 2.2 What education would be a priority for this client?