Heterogenous Distribution of Risk for Cardiovascular Disease Events in Patients With Stable Ischemic Heart Disease

Area of Science:

• Cardiovascular medicine
• Medical imaging
• Preventive cardiology

Background:

• Computed tomography angiography (CTA) is a primary diagnostic tool for coronary artery disease (CAD) symptoms.
• Clinical decisions require effective utilization of CTA data for preventive therapy allocation.

Purpose of the Study:

• To assess the 5-year cardiovascular disease (CVD) event and death risk distribution.
• To analyze risk in symptomatic patients with varying degrees of CAD identified by CTA.

Main Methods:

• Developed a predictive model for 5-year CVD risk and death using traditional factors and CAD severity.
• Analyzed data from 21,275 patients in the Western Denmark Heart Registry.

Main Results:

• Median 5-year risk was 4%, with individual patient risk ranging from <5% to >50%.
• CAD severity was the strongest predictor, but traditional factors also contributed significantly.
• Risk distributions overlapped considerably; extensive nonobstructive CAD could pose higher risk than obstructive CAD.

Conclusions:

• Significant variation in 5-year CVD event and death risk exists post-CTA, even with obstructive CAD.
• Individualized risk assessment is supported to enhance preventive therapy benefits.