Among the things we can do (even if we can't get any aerobic exercise) is watch our weight, reduce our fat consumption and take meds and/or nutritional supplements remedies (Omega 3 oil is very good) to improve our lipid profiles, as well as using antioxidants to interfere with the operation of vascular adhesion molecules. Basically reducing our conventional risk profile as best we can.
[See Slide 16 in the following article posted by Roz.]
Since we got a dog a year ago, I've lost 27 lbs. Not from walking him - which I can't - but simply by maintaining what amounts to a vegan diet during the day so that he isn't always begging my lunch. Surprisingly, that hasn't always worked out, to the point that I may have the world's only shiba inu who likes hummus and baba ganoush on whole-wheat peta bread.