The Prevalence Of Carotid Artery Stenosis And Realated Imaging Study

Part one: The prevalence of carotid artery stenosis in patients withcoronary artery diseaseObjective: To determine the prevalence, distribution and severity of CS in patients with CAD. Methods: 97 patients with CAD confirmed by coronary angiography accepted digital subtraction carotid artery angiography ( DSA ) simultaneously. CAD was defined as diameter lumen stenosis of >50% in at least 1 major coronary artery. According to the number of diseased vessels, patients were classified into three groups: group 1, patients with 1-vessel disease; group 2, patients with 2-vessel disease; group 3, patients with 3-vessel or left main stem(LMS) disease. Taking CS ≧70% as a cutoff point, we compared the prevalence and distribution on different groups. Significant variables such as age, BMI , history of hypertension and biochemical and lipid risk factors related to CAD were entered into a forward stepwise logistic model to indentify independent risk factors associated with significant CS. Results: 25(25.8%)had 1-vessel disease, 34(35%)had 2-vessel disease, 38 (39.2%) had 3-vessel or left main stem(LMS) disease. CS ( lumen diameter stenosis ≧70% ) was present in 4%, 38%, 47.4% of patients...