Carolina Pereira1, Marcio H Miname2, Marcia R P Makdisse3, Carolina Watanabe4, Antonio E Pesaro3, Cinthia E Jannes4, Roberto Kalil Filho2, Alexandre C Pereira4, Raul D Santos5. 1. Lipid Clinic Heart Institute (InCor), University of São Paulo Medical School Hospital, São Paulo, Brazil; Cardiology Program, Hospital Israelita Albert Einstein, São Paulo, Brazil. 2. Lipid Clinic Heart Institute (InCor), University of São Paulo Medical School Hospital, São Paulo, Brazil. 3. Cardiology Program, Hospital Israelita Albert Einstein, São Paulo, Brazil. 4. Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of Sao Paulo Medical School, São Paulo, Brazil. 5. Lipid Clinic Heart Institute (InCor), University of São Paulo Medical School Hospital, São Paulo, Brazil; Preventive Medicine Center and Cardiology Program, Hospital Israelita Albert Einstein, São Paulo, Brazil. Electronic address: rdsf@uol.com.br.
Abstract
BACKGROUND: Familial hypercholesterolemia is characterized by elevated plasma cholesterol and early coronary arterial disease onset. However, few studies investigated the association of heterozygous familial hypercholesterolemia with peripheral arterial disease. METHODS: In a cross sectional study 202 heterozygous familial hypercholesterolemia patients (91% confirmed by molecular diagnosis) were compared to 524 normolipidemic controls. Peripheral arterial disease was diagnosed by ankle-brachial index values ≤0.90. RESULTS: Compared with controls, familial hypercholesterolemia patients were older, more often female, with higher rates of hypertension, diabetes, previous coronary disease and higher total cholesterol levels. Smoking (previous and former) was more common among controls. The prevalence of peripheral arterial disease was 17.3 and 2.3% respectively in familial hypercholesterolemia and controls (p < 0.001). Results persisted after matching familial hypercholesterolemia and controls by a propensity score. Regression analyses demonstrated that age (odds ratio- OR = 1.03 95% CI 1.00-1.05, p = 0.033), previous cardiovascular disease (OR = 3.12 CI 95% 1.56-6.25, p = 0.001) and familial hypercholesterolemia diagnosis (OR = 5.55 CI 95% 2.69-11.44, p< 0.001) were independently associated with peripheral arterial disease. Among familial hypercholesterolemia patients, age (OR 1.05, 95% CI 1.02-1.09, p = 0.005), intermittent claudication (OR 6.32, 95% CI 2.60-15.33, p< 0.001) and smoking (OR 2.44, 95% CI 1.08-5.52, p = 0.032) were associated with peripheral arterial disease. CONCLUSIONS: Peripheral arterial disease is more frequent in familial hypercholesterolemia than in normolipidemic subjects and it should routine screened in these individuals even if asymptomatic. However, its role as predictor of cardiovascular events needs to be ascertained prospectively.
BACKGROUND:Familial hypercholesterolemia is characterized by elevated plasma cholesterol and early coronary arterial disease onset. However, few studies investigated the association of heterozygous familial hypercholesterolemia with peripheral arterial disease. METHODS: In a cross sectional study 202 heterozygous familial hypercholesterolemiapatients (91% confirmed by molecular diagnosis) were compared to 524 normolipidemic controls. Peripheral arterial disease was diagnosed by ankle-brachial index values ≤0.90. RESULTS: Compared with controls, familial hypercholesterolemiapatients were older, more often female, with higher rates of hypertension, diabetes, previous coronary disease and higher total cholesterol levels. Smoking (previous and former) was more common among controls. The prevalence of peripheral arterial disease was 17.3 and 2.3% respectively in familial hypercholesterolemia and controls (p < 0.001). Results persisted after matching familial hypercholesterolemia and controls by a propensity score. Regression analyses demonstrated that age (odds ratio- OR = 1.03 95% CI 1.00-1.05, p = 0.033), previous cardiovascular disease (OR = 3.12 CI 95% 1.56-6.25, p = 0.001) and familial hypercholesterolemia diagnosis (OR = 5.55 CI 95% 2.69-11.44, p< 0.001) were independently associated with peripheral arterial disease. Among familial hypercholesterolemiapatients, age (OR 1.05, 95% CI 1.02-1.09, p = 0.005), intermittent claudication (OR 6.32, 95% CI 2.60-15.33, p< 0.001) and smoking (OR 2.44, 95% CI 1.08-5.52, p = 0.032) were associated with peripheral arterial disease. CONCLUSIONS:Peripheral arterial disease is more frequent in familial hypercholesterolemia than in normolipidemic subjects and it should routine screened in these individuals even if asymptomatic. However, its role as predictor of cardiovascular events needs to be ascertained prospectively.
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