Long-term follow-up of patients with first-time chest pain having 64-slice computed tomography

Area of Science:

• Cardiology
• Radiology
• Medical Imaging

Background:

• Limited data exists on the long-term outcomes of coronary multislice computed tomography (CT).
• Assessing coronary artery disease (CAD) risk in intermediate-risk patients requires reliable prognostic tools.

Purpose of the Study:

• To evaluate the long-term follow-up results of 64-slice CT in a homogeneous patient group.
• To determine the prognostic value of coronary CT angiography in predicting major adverse cardiac events (MACE).

Main Methods:

• A prospective study involving 222 intermediate-risk patients undergoing 64-slice CT.
• Coronary lesions were assessed for significance (≥50% luminal narrowing) and plaque type (calcified, noncalcified, mixed).
• Patients were followed for a mean of 5 years for major adverse cardiac events.

Main Results:

• Coronary plaques were detected in 73% of patients; 62 had significant stenosis.
• Annualized event rates were 0% for normal arteries, 1.2% for nonsignificant stenosis, and 4.2% for significant stenosis (p <0.01).
• Significant stenosis, proximal lesions, multivessel disease, and noncalcified/mixed plaques predicted adverse events.

Conclusions:

• 64-slice CT provides valuable long-term prognostic information for patients at intermediate risk of CAD.
• The presence and characteristics of coronary plaques identified by CT are crucial for risk stratification.
• Coronary CT angiography aids in predicting major adverse cardiac events, supporting its clinical utility.