Is it worth knowing you have narrowings in the coronary arteries if you don’t have any symptoms?

There's lots of tests you can do to find narrowings of the heart arteries. If you haven't got any symptoms, do these narrowings themselves confer a risk to you? Yeah, absolutely. If you have narrowing in the heart arteries, then you are without adequate control. We do see a lot of cases where coronary disease progresses, especially in the absence of medical therapy. So lots of people who have mild or moderate disease at one stage and then you reassess them later and that disease has progressed so it's really important to be able to identify that and to treat it so make sure they're on good medical therapy for their coronary disease.