I'm surprised his doctor has not spoken to him, you need to schedule an appointment to discuss this. Simply put, these numbers would indicate a form of dilated cardiomyopathy meaning the walls have been stretched and are now thin and not as efficient as they should be. Also, the EF% of 25 would suggest congestive heart failure which explains the swollen legs because his heart is not beating efficiently. You need to speak to his doctor about his course of treatment. PM me if you would like more detail.