Global risk scores and exercise testing for predicting all-cause mortality in a preventive medicine program

Area of Science:

• Cardiology
• Preventive Medicine
• Clinical Risk Assessment

Background:

• The predictive value of exercise stress tests and global cardiovascular risk scores for all-cause mortality in asymptomatic individuals is not well-established.
• Existing risk assessment tools may not fully capture the mortality risk in this population.

Purpose of the Study:

• To evaluate the Framingham Risk Score and the European Systematic Coronary Risk Evaluation (SCORE) for predicting all-cause mortality in asymptomatic adults.
• To assess the additional prognostic value of exercise stress testing in individuals with known baseline cardiovascular risk.

Main Methods:

• A prospective cohort study involving 3554 asymptomatic adults aged 50-75 years who underwent exercise stress testing.
• Participants were followed for a mean of 8 years, with all-cause mortality as the primary endpoint.
• Risk assessment included the Framingham Risk Score, European SCORE, and exercise stress test parameters like functional capacity and heart rate recovery.

Main Results:

• The European SCORE demonstrated superior performance compared to the Framingham Risk Score in estimating mortality risk.
• Independent predictors of mortality included a higher European SCORE, impaired functional capacity, and abnormal heart rate recovery during exercise stress testing.
• ST-segment depression on exercise stress testing did not significantly predict mortality.

Conclusions:

• The European SCORE, when integrated with exercise stress testing, offers a valuable tool for risk stratification in asymptomatic individuals.
• This combined approach can enhance comprehensive health screening programs for early identification of high-risk individuals.