Predictors of mortality in very old subjects aged 80 years or over

Area of Science:

• Gerontology
• Cardiovascular Medicine
• Pulmonology

Background:

• Established cardiovascular risk factors are crucial for assessing risk in younger adults.
• The predictive value of these factors in the very elderly population (80 years and over) is less understood.
• The Cardiovascular Study in the Elderly (CASTEL) provides a unique cohort for this investigation.

Purpose of the Study:

• To evaluate the predictive power of well-known cardiovascular risk factors for mortality in individuals aged 80 years and over.
• To identify novel or underappreciated predictors of mortality in this specific elderly cohort.
• To compare the efficacy of traditional versus non-traditional risk factors in predicting all-cause mortality.

Main Methods:

• Analysis of data from 318 participants aged 80 years and over from the Cardiovascular Study in the Elderly (CASTEL).
• Assessment of traditional risk factors including left ventricular hypertrophy, glucose intolerance, cholesterol, ApoB/ApoA ratio, triglycerides, proteinuria, smoking, and ECG abnormalities.
• Statistical analysis to determine the predictive strength of various factors for mortality.

Main Results:

• Commonly accepted cardiovascular risk factors demonstrated minimal predictive value for mortality in this elderly cohort.
• Reduced forced expiratory volume in 1 second (FEV1), a measure of lung function, was a strong predictor of mortality.
• Elevated blood uric acid levels also emerged as a significant predictor of mortality.

Conclusions:

• Traditional cardiovascular risk factors may not be reliable indicators of mortality risk in the very elderly.
• Pulmonary function (FEV1) and blood uric acid levels are important, potentially underutilized, predictors of mortality in older adults.
• Future research should focus on these factors for improved risk stratification in geriatric populations.