Carotid Doppler Ultrasonography in Preoperative Assessment of Coronary Artery Bypass Graft Surgery in an Iranian Population: Association Between Atherosclerosis Risk Factors and Carotid Stenosis
Among all cardiovascular risk factors, it seems that serum HDL, smoking, left main coronary stenosis and hypertension could be associated with significant carotid artery stenosis in CABG candidates
Background/Objective: The aim of this study was to assess the frequency of significant caro-
tid artery stenosis and its association with the cardiovascular risk factors in a group of Ira-
nian candidates for CABG.
Patients and Methods: Three hundred and one patients with critical coronary artery disease,
who were candidates for coronary artery bypass graft (CABG) were evaluated by internal
carotid Doppler study. The relations between age, gender, hypertension, diabetes mellitus,
smoking, lipid profile, left main coronary stenosis greater than 50% by diameter and coronary
artery disease with carotid stenosis were assessed.
Results: Significant carotid stenosis greater than 70% was detected in 13 patients (4.3%). Ac-
cording to the meaningful relationship between significant carotid stenosis and low HDL se-
rum level (lower than 45 in women and lower than 35 in men, p=0.028), hypertension
(p=0.021), history of smoking (p=0.026) and left main coronary artery stenosis greater than
50% (p=0.035), they were identified as risk factors valuable enough to guide for selective
screening.
Conclusion: Among all cardiovascular risk factors, it seems that serum HDL, smoking, left
main coronary stenosis and hypertension could be associated with significant carotid artery
stenosis in CABG candidates
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