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Usefulness of Carotid Intima-Media Thickness Measurement and Peripheral B-Mode Ultrasound Scan in the Clinical Screening of Patients with Coronary Artery Disease

Ugo Limbruno, MD

Anna Sonia Petronio, MD

Roberto Baglini, MD

Giancarlo Strata, MD

Rita Mariotti, MD

M. Ciccone, MD, FACA

Mario Mariani, MD, FACC

Alberto Balbarini

Dipartimento di Cardiologia, Angiologia e Pneumologia Ospedale di Cisanello Via Paradisa 2 Pisa Italy

Previous observational studies have shown a relationship between carotid intima-media thickness (IMT) and coronary artery disease (CAD). In this study the authors evaluated the accuracy of the common carotid IMT measurement in predicting the presence and severity of CAD and the additional information offered by the detection of carotid, iliac, and lower limb plaques. One hundred and fifty consecutive patients were subjected to coronary angiography and carotid, iliac, and lower limb ultrasound scan. The mean value of six IMT measurements of the far wall of the common carotid artery was calculated in each patient. The mean IMT was significantly correlated to the number of stenosed coronary vessels (r = 0.43, p < 0.001), although the positive and negative predictive value of mean IMT in identifying patients with CAD was low (81% and 46%, respectively). The combined information offered by IMT measurements and peripheral (carotid, iliac, and lower limb) plaque detection was then used to obtain the best multivariate regression model able to predict CAD status. The multivariate model showed a highly significant multiple correlation coefficient (r = 0.60, p < 0.0001) and a sharp improvement in the negative predictive value (92%) with respect to the univariable model. B-mode ultra sound scan including common carotid IMT measurement and peripheral plaque detection may be of clinical value in the screening of patients with CAD.

Angiology, Vol. 51, No. 4, 269-279 (2000)
DOI: 10.1177/000331970005100401


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