Final answer:
The patient's statement about needing to remove their wedding ring suggests peripheral edema, which is a common sign of heart failure.
Step-by-step explanation:
The nurse is interviewing a patient with a history of high blood pressure and heart problems. Out of the given options, the statement by the patient that would cause the nurse to suspect heart failure is "I had to take off my wedding ring last week." This statement could be indicative of peripheral edema, which is a common sign of heart failure, where fluid accumulates in the extremities causing swelling. It's worth noting that rapid weight gain from fluid retention is a possible indicator of heart failure, as well.