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Published on: August 28, 2018
Comparison of Plaque Composition in Diabetic and Non-Diabetic Patients With Coronary Artery Disease Using Multislice
Yong-Seop Kwon1, Jae-Sik Jang, Chang-Won Lee
1Department of Internal Medicine, Busan St. Mary's Hospital, Busan, Korea.
Insights
Diabetic patients show a higher degree of mixed coronary plaque burden compared to non-diabetic individuals. Multislice computed tomography angiography can noninvasively assess these differences in plaque composition.
Area of Science:
- Cardiovascular Imaging
- Diabetology
- Interventional Cardiology
Background:
- Coronary plaque composition, not just luminal narrowing, may predict cardiovascular events in high-risk patients.
- Diabetes mellitus is a significant risk factor for coronary artery disease (CAD).
Purpose of the Study:
- To compare plaque burden and composition using multislice computed tomography (MSCT) angiography in diabetic versus non-diabetic patients.
- To evaluate the utility of MSCT angiography in assessing coronary plaque characteristics.
Main Methods:
- 452 patients underwent MSCT angiography; 92 with invasive coronary angiography were analyzed.
- Coronary plaque presence, type, and luminal narrowing severity were assessed.
- MSCT angiography performance was compared to conventional coronary angiography.
Main Results:
- Diabetic patients had a higher prevalence of mixed coronary plaque compared to non-diabetic patients.
- MSCT angiography demonstrated high accuracy (AUC 0.88) in predicting significant coronary artery disease.
- No significant difference was observed in the proportion of patients with multiple plaque types (p=0.485).
Conclusions:
- MSCT angiography can noninvasively differentiate coronary plaque composition between diabetic and non-diabetic patients.
- Mixed plaque types contribute more significantly to the total plaque burden in diabetic patients.
Background And Objectives:
Plaque composition rather than degree of luminal narrowing may be predictive of future coronary events in high risk patients. The purpose of this study was to compare degree of plaque burden and composition with multislice computed tomography (MSCT) angiography between diabetic and non-diabetic patients.
Subjects And Methods:
A total of 452 consecutive MSCT angiography examinations were performed between July 2007 and June 2009. Of these, the patients who underwent invasive coronary angiography were evaluated for the presence and type of atherosclerotic plaque and severity of luminal narrowing.
Results:
Ninety two (46 in the diabetic group and 46 in the non-diabetic group) patients underwent both MSCT angiography and invasive coronary angiography. Among them, 30 patients (65.2%) in the diabetic group and 26 patients (56.5%) in the non-diabetic group had significant coronary narrowing on MSCT angiography. Sixteen patients (34.8%) in the diabetic group and 15 patients (32.6%) in non-diabetic group underwent coronary angioplasty and stenting. Forty-two patients (93.3%) in the diabetic group and 39 patients (88.6%) in the non-diabetic group had multiple types of coronary plaque (p=0.485). MSCT angiography was similar to conventional coronary angiography in its ability to predict significant coronary artery disease in that the area under the curve was 0.88 (95% confidence interval, 0.81 to 0.95). Diabetic patients had more mixed plaque compared with non-diabetic patients.
Conclusion:
Differences in coronary plaque composition between diabetic and non-diabetic patients can be determined noninvasively by MSCT angiography. In patients with diabetes, mixed plaque types contribute to the total plaque burden to a higher degree than in non-diabetic patients.
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