Abstract:
BACKGROUND:Current approaches to cardiovascular (CV) risk assessment have limitations. Subclinical atherosclerosis (SCA) as determined by carotid ultrasound is an independent predictor of myocardial infarction and stroke and can refine CV risk assessment. OBJECTIVES:We aimed to determine the prevalence and predictors of SCA in a multiethnic population classified as low risk for coronary heart disease (CHD) events by the Framingham Risk Assessment Model. METHODS:We conducted a cross-sectional population study in 1015 Canadian adults of Caucasian European, South Asian, Chinese and Aboriginal ancestry. CHD risk was calculated by the 10-year Framingham Risk Score (FRS). Novel and conventional CHD risk factors were measured and high-resolution carotid ultrasound was performed. SCA was defined as carotid intima media thickness (IMT) >or=75th percentile adjusted for age, sex and ethnicity. RESULTS:Seven hundred and fifty two (74%) participants were classified as low risk by FRS. Of these, 175 (23%) had evidence of SCA. Independent predictors of SCA among low-risk subjects included female sex, systolic blood pressure, and apolipoprotein B. CONCLUSIONS:Many individuals classified at low CHD risk by the FRS have SCA and are at increased long-term risk for vascular events. Carotid IMT can identify subjects with SCA, who may benefit from early intervention.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Grewal J,Anand S,Islam S,Lonn E,SHARE and SHARE-AP Investigators.doi
10.1016/j.atherosclerosis.2007.06.020subject
Has Abstractpub_date
2008-03-01 00:00:00pages
435-42issue
1eissn
0021-9150issn
1879-1484pii
S0021-9150(07)00412-1journal_volume
197pub_type
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