ISSN: 2451-0629
Archives of Medical Science - Atherosclerotic Diseases
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Official journal of the International Lipid Expert Panel (ILEP)
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1/2020
vol. 5
 
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abstract:
Clinical research

Diagnostic accuracy of carotid intima media thickness by B-mode ultrasonography in coronary artery disease patients

Nasir Raza Zaidi
1
,
Syed Amir Gilani
1
,
Riffat Mehboob
1
,
Humaira Waseem
1
,
Amber Hassan
1

1.
University Institute of Radiological Sciences and Medical Imaging Technology, University of Lahore, Lahore, Pakistan
Arch Med Sci Atheroscler Dis 2020; 5: e79–e84
Online publish date: 2020/05/27
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Introduction
Cardiovascular diseases (CVD) are the main cause of premature deaths worldwide, and atherosclerosis (AS) is a major risk factor associated with them. B-mode ultrasound is a well-validated research tool that has been translated increasingly into clinical practice. The aim of the study was to assess the diagnostic accuracy of carotid intima media thickness by B-mode ultrasonography in coronary artery disease patients.

Material and methods
This was a case control study, including 100 cases and the same number of controls. Patients with positive angiographic findings and chest pain were considered as cases and those without as negative. Duplex carotid ultrasound was used to detect intima-media thickness (IMT). B-mode real-time ultrasonic images were obtained with a 7 MHz transducer. An intima media thickness of 0.6 mm was considered as being without plaque.

Results
The angiographic findings were single-vessel disease, double-vessel disease, and triple-vessel disease in 18%, 11.5%, and 20.5% of cases, respectively, while there were no findings in controls. There was plaque formation in 14.5% and calcification in 12% of the cases. Sensitivity of B-mode ultrasonography was found to be 78%, specificity 75%, positive predictive value 75.72%, and negative predictive value 77.31%.

Conclusions
Carotid ultrasonography can be utilised as a valuable screening tool due to having several advantages, including ease of application, reproducibility, low cost, and strong correlation with atherosclerosis.

keywords:

coronary artery disease, cardiovascular disease, cerebrovascular disease, intima media thickness, B-mode ultrasound

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