Predictive value of coronary artery calcium score in cardiovascular disease

Area of Science:

• Cardiology
• Preventive Medicine
• Medical Imaging

Background:

• Subclinical noncalcified atherosclerotic plaque detection is crucial for cardiovascular risk assessment.
• The prognostic value of coronary artery calcium score (CACS) in diverse populations requires further investigation.

Purpose of the Study:

• To evaluate coronary heart disease (CHD) and cardiovascular disease (CVD) event rates in individuals with a CACS of 0.
• To assess the role of CACS in identifying subclinical atherosclerotic plaque and predicting cardiovascular events.

Main Methods:

• A meta-analysis of five studies including 15,884 participants.
• Calculation of hazard ratios (HRs) with 95% confidence intervals (95% CIs) to determine event rates.
• Stratification of participants based on CACS categories (0, 1-100, 101-300, >300).

Main Results:

• CHD incidence significantly increased with rising CACS (HR=0.05).
• CVD rates were low with CACS of 0, increasing with higher CACS values, peaking at >300.
• While higher CACS correlates with increased CHD and CVD, CVD rates did not consistently decrease compared to CHD rates at the same CACS, particularly with CACS of 0.

Conclusions:

• A CACS of 0 indicates a low risk for CHD and CVD events.
• Increasing CACS is a significant predictor of elevated CHD and CVD event rates.
• CACS is a valuable tool for detecting subclinical atherosclerosis and refining cardiovascular risk prediction.