In order to help you to look at your circumstances analytically, and to try to beat down the emotion (which is perfectly understandable), I will ask you the same question that I make myself address in apparently urgent or novel situations:

What was the extent of deposition in the LAD ......BEFORE....you had the diagnostic imaging?

You don't know the answer. Or, if you do, from a previous diagnostic image session, what is the delta....the 'difference'...between then and now? I'll bet it's not a lot.

What I'm trying to get at is that the CAC score, or the extent of deposition in the LAD, is a number. I'd be willing to bet that four years ago, for a person who has been on statins a good long time, the number was probably all the way up to 315 already. So you are not depositing much over time, which is what you want to see. Another way of looking at it is this: maybe, without the statin working in you, you'd be up to 800 by now. You can see that it wouldn't be what one might call a salutary place to be.

The person replying just above has it correctly...it's just a number, and the 'directionality', or the speed of deposition, is unknown. However, the statistical probability is that it is much slower than if you had not been on a statin, and even so, at 346, you have a long way to go before you start to experience signs of ischemia. Probably 15 years. By then, you might qualify for an operation to stent or to bypass, or maybe just an angioplasty...I'm not an expert in this.

Virtually nobody gets to their death, accidental or natural, without a healthy sprinkling of calcified plaque in their system. The heart gets some, the carotid arteries get some, the groin area gets some. What you want to avoid is unnoticed and unmanaged deposition, especially in that gruesome LAD. Yours is both noticed and managed.

Go have a goblet of really good wine. 😀