Knowing that the client has two risk factors that cannot be modified, which intervention is most important for the nurse to include in the client's plan of care? Complete a focused cardiac history assessment. --Myocardial infarction, coronary artery disease, and ischemic heart disease are among the most common underlying causes of heart failure. In fact, the most common cause of heart failure is myocardial infarction. The nurse should also ask the client if they have hypertension which is ...