Impact of Coronary Artery Calcification on All-Cause Mortality in Individuals With and Without Hypertension

This large study examined how coronary calcium and high blood pressure interact to determine survival — and showed that calcium scoring refines risk regardless of hypertension status.

Among more than 44,000 asymptomatic people, those combining a high calcium score (≥400) with hypertension had the highest all-cause mortality, while those with no hypertension and zero calcium had the lowest. Critically, the calcium score predicted mortality within both the hypertensive and non-hypertensive groups — a hypertensive patient with zero calcium fared far better than a normotensive one with heavy calcium.

The practical message is that blood pressure status alone does not capture a person’s risk; a direct look at the artery sharpens it. A hypertensive patient with a clean calcium scan can be reassured, while one with heavy calcium warrants aggressive treatment.

We rate the evidence strong. It is a very large prospective cohort that adds useful granularity to calcium scoring’s prognostic value, with the standard caveat that observational data show prediction rather than proof that acting on the score changes outcomes.