Stroke, Vol 23, 818-822, Copyright © 1992 by American Heart Association
A Pujia, P Rubba and MP Spencer
BACKGROUND AND PURPOSE: Little information is available on extracranial
carotid artery disease in free-living elderly individuals. We sought to
evaluate the prevalence of carotid lesions in the elderly. METHODS: Using
echo-Doppler, we assessed the prevalence of possible atherosclerotic
lesions in the internal carotid arteries (n = 478) and the external and
common carotid arteries (n = 956) of 239 subjects 65- 94 years of age
living in retirement homes in Seattle, Wash. RESULTS: We found that 152
(31.8%) internal carotid arteries were affected by nonstenosing plaque and
37 arteries (7.7%) had stenosis or occlusion. In addition, 193 (20.2%)
external or common carotid arteries showed nonstenosing plaques. There were
128 subjects (53.6%) with internal carotid disease, 106 (44.3%) with
evidence of external or common carotid disease, and 75 (31.4%) affected by
disease in all three sites. There were 80 subjects (33.5%) with no
ultrasound evidence of carotid disease. We found that the presence and
severity of carotid disease increased between the decades 65-74 and 75-84.
We also demonstrated a positive association between systolic blood pressure
and ultrasound evidence of carotid disease that was independent of age.
CONCLUSIONS: The prevalence of extracranial artery disease in an apparently
healthy population was high, although stenoses in most instances were not
severe. We conclude that noninvasive ultrasound methods identify a
relatively small fraction of individuals (5% of the total) at high risk for
stroke or transient ischemic attack. Echo-Doppler might be used to monitor
further disease progression and to evaluate the efficacy of different
therapeutic or preventive interventions.
ARTICLES
Prevalence of extracranial carotid artery disease detectable by echo- Doppler in an elderly population
Department of Internal Medicine, Medical School of Catanzaro, University of Reggio Calabria, Italy.
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