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PREVALENCE OF CAROTID PLAQUE IN PATIENTS WITH NO HISTORY OF VASCULAR DISEASE

Author Block M Matangi, A Dillon, D Brouillard, A Johri

Kingston, Ontario

Abstract:
BACKGROUND: The purpose of our investigation was to assess the prevalence of carotid plaque in patients with no prior history of vascular disease.
METHODS: Patients presenting for ECHO, treadmill ECHO, Bike ECHO and Dobutamine ECHO were asked to also undergo a screening carotid Doppler to assess maximal CCA IMT and carotid plaque. All patients gave signed informed consent. The presence of plaque was defined using the ARIC definition.
RESULTS:There were 2,270 patients. The major results are seen in Table 1 and the image below.
CONCLUSION: There is a progressive increase in the prevalence of carotid plaque with increasing deciles of age. Over age 70 years there seems little point in screening for carotid disease as the majority of patients (83.6%) are high risk from a vascular standpoint.
 carotid plaque.jpg - 59.31 Kb

Table 1.
Age group Number Maximal CCA IMT
40-49 years 179 0.97 ± 0.36
50-59 years 800 1.01 ± 0.35
60-69 years 786 1.16 ± 0.37
70-79 years 394 1.38 ± 0.72
>79 years 111 1.39 ± 0.57