(chapter 33) What are several age-related changes that you would expect to see in a 78-year-old man’s heart? What would indicate that the change is related to something other than age?

(Chapter34)A 68-year-old woman has recently undergone cardiac surgery for repair of a defective heart valve. She has a midline chest incision. The registered nurse identifies a patient problem of inadequate oxygenation related to general anesthesia and pain. What nursing interventions would be appropriate for this patient to meet the goals of adequate oxygenation for this patient problem?