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Coronary anatomy and left ventricular ejection fraction in patients with type 2 diabetes admitted for elective
Peter Ammann1, Hanspeter Brunner-La Rocca, Thomas Fehr
1Division of Cardiology, Kantonsspital St. Gallen, St. Gallen, Switzerland. peter.ammann@kssg.ch
Insights
Diabetic patients have significantly worse coronary artery disease and heart function compared to non-diabetics. Early cardiac screening is crucial for individuals with diabetes mellitus to detect heart problems.
Area of Science:
- Cardiology
- Endocrinology
- Vascular Biology
Background:
- Diabetes mellitus (DM) is linked to more severe coronary artery disease (CAD).
- Diabetic patients face a 2-4 times higher risk of myocardial infarction and mortality.
- Understanding the cardiac implications of DM is critical for patient outcomes.
Purpose of the Study:
- To analyze and compare coronary anatomy and left ventricular ejection fraction (LVEF) in diabetic versus non-diabetic patients.
- To identify cardiac risk factors associated with diabetes in patients undergoing coronary angiography.
- To determine if DM independently predicts advanced coronary heart disease and left ventricular dysfunction.
Main Methods:
- Coronary angiography data from 6,234 patients were analyzed.
- Left ventricular ejection fraction was assessed in 4,767 patients (76.5%).
- Diabetic (n=641) and non-diabetic patient groups were compared for CAD severity, LVEF, and risk factors.
Main Results:
- Diabetic patients were older and had higher rates of hypertension.
- Three-vessel disease was significantly more prevalent in diabetic patients (44.7% vs. 25.4%).
- Reduced left ventricular ejection fraction was also significantly associated with diabetes (58.4% vs. 63.9%).
Conclusions:
- Advanced coronary heart disease and left ventricular dysfunction are highly prevalent in diabetic patients.
- These cardiac issues are present independently of age and other cardiovascular risk factors.
- Cardiac assessment in diabetic patients should include screening for left ventricular dysfunction alongside diabetic control.
Abstract:
Patients with diabetes mellitus (DM) have more severe coronary artery disease and a two- to fourfold higher risk for myocardial infarction and death as compared to patients without DM. In this study, we analyzed coronary anatomy, left ventricular ejection fraction, and cardiac risk factors in patients with DM referred for coronary angiography and compared them with findings in nondiabetic patients. Coronary anatomy was assessed in a total of 6,234 patients and left ventricular ejection fraction in a subset of 4,767 (76.5%) patients. Diabetic patients (n = 641) were older (60.8 +/- 9.6 vs. 58.5 +/- 10.5 years; P < 0.0001) and had higher rates of hypertension (65% vs. 47%; P < 0.0001). Three-vessel disease (DM 44.7% vs. no DM 25.4%; P < 0.0001) and reduced left ventricular ejection fraction (DM 58.4% +/- 15.2 vs. no DM 63.9% +/- 13.2; P < 0.0001) were significantly associated with DM. After adjustment for age and other vascular risk factors, the presence of DM was associated with a higher atherosclerotic burden. We conclude that advanced coronary heart disease and left ventricular dysfunction are highly prevalent in diabetic patients, independent of age and other cardiovascular risk factors. Thus, cardiac assessment in diabetic patients should, in addition to optimal diabetic control, involve screening for left ventricular dysfunction.
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