This would get very specific to the organ systems involved, and starts to get above my understanding, but it'd be things like:

Coronary calcium scan to check for the progress of atherosclerosis in the coronary arteries, ultrasound of the kidneys, maybe the heart to check for left ventricular hypertrophy (or do you need an echocardiogram for that?), ultrasound for the carotid arteries, etc.