Howard N. Hodis, MD; Wendy J. Mack, PhD; Laurie LaBree, MS; Robert H. Selzer, MS; Chao-ran Liu, MD; Ci-hua Liu, MD; Stanley P. Azen, PhD
Carotid arterial intima-media thickness is used as a noninvasive surrogate end point to measure progression of atherosclerosis, but its relation to coronary events has not been fully explored.
To determine whether carotid arterial intima-media thickness predicts coronary events.
Long-term follow-up (average, 8.8 years) of a previously assembled cohort of persons who completed the 2-year Cholesterol Lowering Atherosclerosis Study, a randomized arterial imaging trial designed to study the effects of lipid lowering on progression of atherosclerosis.
University-based ultrasonography laboratory.
146 men 40 to 59 years of age who had previously had coronary artery bypass graft surgery.
Preintrusive atherosclerosis in the common carotid artery was evaluated every 6 months with B-mode ultrasonography, and intrusive atherosclerosis in the coronary arteries was evaluated at baseline and at 2 years with quantitative coronary angiography. After the trial, the incidences of coronary events (nonfatal acute myocardial infarction, coronary death, and coronary artery revascularization) were documented.
For each 0.03-mm increase per year in carotid arterial intima-media thickness, the relative risk for non-fatal myocardial infarction or coronary death was 2.2 (95% CI, 1.4 to 3.6) and the relative risk for any coronary event was 3.1 (CI, 2.1 to 4.5) (P < 0.001). Absolute intima-media thickness was also related to risk for clinical coronary events (P < 0.02). Absolute thickness and progression in thickness predicted risk for coronary events beyond that predicted by coronary arterial measures of atherosclerosis and lipid measurements (P < 0.001).
Noninvasive B-mode ultrasonographic measurement of progression of intima-media thickness in the distal common carotid artery is a useful surrogate end point for clinical coronary events.
Hodis HN, Mack WJ, LaBree L, Selzer RH, Liu C, Liu C, et al. The Role of Carotid Arterial Intima-Media Thickness in Predicting Clinical Coronary Events. Ann Intern Med. ;128:262–269. doi: 10.7326/0003-4819-128-4-199802150-00002
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Published: Ann Intern Med. 1998;128(4):262-269.
Cardiac Diagnosis and Imaging, Cardiology, Coronary Heart Disease, Coronary Risk Factors, Dyslipidemia.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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