Can You Have Heart Disease With a Zero Calcium Score? | Dr Campbell Rogers | EP#426
A calcium score of zero indicates very low short-term cardiovascular risk, but does not rule out the presence of coronary artery disease. Patients can have non-calcified plaque that is invisible to calcium scoring, and advanced imaging like CTA may be warranted for high-risk individuals despite a zero score.
Summary
Dr. Campbell Rogers discusses the critical distinction between what a coronary artery calcium (CAC) score of zero actually means versus common patient misconceptions. While a zero calcium score does impart very low risk of heart attack, stent placement, or cardiac death over several years, it does not definitively indicate the absence of coronary artery disease. The key insight is that plaque can exist in the coronary arteries in a non-calcified form, which remains invisible to calcium scoring technology. This means patients with a zero score may still have atherosclerotic disease present that the test cannot detect. For patients with very high risk profiles despite a zero calcium score, Dr. Rogers notes there may be a role for more advanced imaging modalities such as coronary CT angiography (CTA). However, he emphasizes an important clinical guideline constraint: CTA is not currently indicated by guidelines unless a patient presents with symptoms, limiting its use as a screening tool for asymptomatic individuals.
Key Insights
- A calcium score of zero indicates very low risk of heart attack or stent placement over several years but does not confirm the absence of coronary artery disease
- Non-calcified plaque can exist in coronary arteries and remains invisible to calcium scoring despite being atherosclerotic disease
- Prognosis and short-term cardiovascular risk are distinct from the presence or absence of actual coronary disease
- CTA imaging may have a role for high-risk patients despite zero calcium scores, but current guidelines do not support its use without symptoms
- Guidelines restrict CTA indication to symptomatic patients, limiting its application as an asymptomatic screening tool even in high-risk individuals
Topics
Transcript
[0:00] What would you say to the person who's had a coronary artery calcium score done and it was zero and they believe that means that they're at very low risk of cardiovascular disease and don't have atherosclerosis. >> Calcium score of zero does impart very low risk. It does not say the patient does not have coronary disease. And those are two different things. Somebody can have plaque in their coronaries that is non-calcified. So a calcium score it is invisible to a calcium score. That does exist. Your prognosis, your risk of [0:30] having a heart attack and dying or having needing a stent over the next several years is very low. It does not tell you you…
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