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kurthr • yesterday at 8:39 PM • 1 reply • view on HN

Actually, yes guidelines are actually that any prior statin prescription removes the need for CAC measurements. That includes those who are discovered to have statin intolerance, and thus requires out-of-pocket payment for any CAC.

I think the challenge here is that other than a CCTA there's no good way to estimate individual (as opposed to hereditary) ASCVD risk. Sure LDL, ApoB, Lp(a), and BP, are statistical proxies, but tell you little about the individual risk. CAC isn't much better, but if you've been taking EPA and VitK2 you have a much higher chance of more stable plaques, which are also more visible on CAC without much larger X-ray exposure and iodine contrast effects.


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bonsai_spool • yesterday at 9:32 PM

> Actually, yes guidelines are actually that any prior statin prescription removes the need for CAC measurements.

I mentioned that the CAC indication is for those in the 10-year ASCVD 5-20% risk band who are considering initiating a statin.

> I think the challenge here is that other than a CCTA there's no good way to estimate individual [...] risk

I'm not sure if you meant hereditary there, so I'll avoid the point.

Is this your area of medicine? I am not a specialist but I have never heard of cardiovascular risk stratification regarding primary prevention in the terms of impending risk to the individual except for NSTEMI patients getting a left-heart catheterization. So I would agree that CAC won't tell a patient when their MI will occur, but that's also true for CCTA and every other screening tool we have. They are designed to identify indviduals at high risk for more intensive preventive care.