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Risk factors for retinal arteriolar emboli in coronary artery disease
B N Alp1, Nilgün Bozbuğa, M Alp
1Department of Health Education Faculty, Marmara University, Istanbul, Turkey.
The Journal of International Medical Research
|November 26, 2009
Summary
This study found that high cholesterol, specifically high low-density lipoprotein cholesterol (LDL-C), is linked to retinal arteriolar emboli in patients undergoing bypass surgery. Managing LDL-C may reduce this risk.
Area of Science:
- Ophthalmology
- Cardiology
- Vascular Medicine
Background:
- Coronary artery disease (CAD) patients undergoing coronary artery bypass graft (CABG) surgery often have multiple cardiovascular risk factors.
- Retinal arteriolar emboli (RAE) are indicators of systemic atherosclerosis and cardiovascular risk.
Purpose of the Study:
- To determine the prevalence of RAE and associated risk factors in patients with CAD undergoing CABG.
- To investigate the relationship between serum lipid levels, particularly low-density lipoprotein cholesterol (LDL-C), and the presence of RAE.
Main Methods:
- Retinal arteriolar emboli were detected using binocular indirect ophthalmoscopy in 148 patients (mean age 59.1 years) with CAD scheduled for CABG.
- Patients were stratified based on baseline LDL-C levels to assess RAE frequency.
Main Results:
- Retinal arteriolar emboli (cholesterol type) were detected in 6.8% of patients.
- RAE were significantly more frequent in patients with LDL-C levels > 100 mg/dl.
- Prevalence of smoking (50.7%), hypertension (49.3%), diabetes (27.0%), and obesity (31.1%) were noted.
Conclusions:
- Hypercholesterolemia and elevated LDL-C are prevalent in patients with RAE undergoing CABG.
- Identifying and managing modifiable risk factors like high LDL-C may be crucial for preventing RAE in this patient cohort.
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