Final answer:
The patient should make the statement: 'If I notice any bruising or bleeding I will need to have lab work done.'
Step-by-step explanation:
A patient who is being discharged on warfarin (Coumadin) following a valve replacement should make the statement: 'If I notice any bruising or bleeding I will need to have lab work done.' This statement demonstrates an understanding of the potential side effects of warfarin, which include bleeding and bruising. Monitoring lab work is important to assess the patient's blood clotting ability and adjust the dosage of the medication if necessary.