Introduction: Carotid artery atherosclerosis is a recognized predictor of cardiovascular events. The coexistence of coronary atherosclerosis and cerebrovascular disease is associated with unfavorable clinical outcomes.
Objectives: The aim of this study was to determine the prevalence of hemodynamically and clinically significant carotid and / or cerebral artery stenosis in patients with stable and unstable coronary artery disease (CAD).
Patients And Methods: Cardiac and neurological examinations together with coronary angiography and carotid ultrasound were performed in 241 patients, and transcranial Doppler imaging of cerebral arteries in 114. The prevalence of hemodynamically significant internal carotid artery (ICA) stenosis, intracranial artery stenosis, and clinical signs of central nervous system ischemia were compared between patients with stable and unstable CAD.
Results: There was no significant difference in the prevalence of ICA stenosis (15.3% vs 19%) and intracranial artery stenosis (18% vs 16%) between patients with stable and unstable CAD. Risk factors for cerebral artery stenosis included ICA stenosis (odds ratio [OR], 13.21; 95% CI, 5.93-41.89) and advanced CAD (OR, 2.38; 95% CI, 1.13-4.09), and for ischemic events within the central nervous system, ICA stenosis (OR, 1.74; 95% CI, 1.01-3.16) and intracranial artery stenosis (OR, 3.01; 95% CI, 1.66-5.57).
Conclusions: No differences in the prevalence of atherosclerosis of the carotid and cerebral arteries were found between patients with stable and unstable CAD in this study. Advanced CAD is one of the risk factors for hemodynamically significant cerebral artery stenosis.
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