Coronary artery calcium to predict all-cause mortality in elderly men and women.

Abstract:

OBJECTIVES:We sought to study the prognostic utility of coronary artery calcium (CAC) in the elderly. BACKGROUND:The prognostic significance of CAC in the elderly is not well known. METHODS:All-cause mortality was assessed in 35,388 patients (3,570 were >or=70 years old at screening, and 50% were women) after a mean follow-up of 5.8 +/- 3 years. RESULTS:In older patients, risk factors and CAC were more prevalent. Overall survival was 97.9% at the end of follow-up. Mortality increased with each age decile with a relative hazard of 1.09 (95% confidence interval: 1.08 to 1.10, p < 0.0001), and rates were greater for men than women (hazard ratio: 1.53; 95% confidence interval: 1.32 to 1.77, p < 0.0001). Increasing CAC scores were associated with decreasing survival across all age deciles (p < 0.0001). Survival for a <40-year and >or=80-year-old man with a CAC score >or=400 was 88% and 19% (95% and 44% for a woman, p < 0.0001), respectively. Among the 20,562 patients with no CAC, annual mortality rates ranged from 0.3% to 2.2% for patients age 40 to 49 years or >or=70 years (p < 0.0001). The use of CAC allowed us to reclassify more than 40% of the patients >or=70 years old more often by excluding risk (i.e., CAC <400) in those with >3 risk factors. CONCLUSIONS:Despite their limited life expectancy, the use of CAC discriminates mortality risk in the elderly. Furthermore, the use of CAC allows physicians to reclassify risk in the elderly.

journal_name

J Am Coll Cardiol

authors

Raggi P,Gongora MC,Gopal A,Callister TQ,Budoff M,Shaw LJ

doi

10.1016/j.jacc.2008.04.004

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

17-23

issue

1

eissn

0735-1097

issn

1558-3597

pii

S0735-1097(08)01285-0

journal_volume

52

pub_type

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