Problem: Leroy is a 65-year-old recent retiree living alone and managing his COPD and heart disease. Recently, Leroy has had a hard time keeping up with his daily tasks, including shopping and meal preparation. Today, his daughter stopped by with groceries and noticed he seemed to be moving more slowly than normal. He was also notably confused about her visit, though the visits had been a weekly occurrence for the past 2 months. After conferring with her family members, Leroy's daughter, Sheila, brings Leroy to the emergency department. The examining physician confirms that Leroy is dehydrated and experiencing confusion and exhaustion upon small amounts of exertion. The physician also notes that Leroy is having difficulty breathing and I wincing when he stands to walk. Upon inquiry, the daughter mentions that the pain when Leroy walks "seems to come and go.'