Journal of Postgraduate Medicine
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Year : 2006  |  Volume : 52  |  Issue : 4  |  Page : 266-270

Utility of carotid intimal medial thickness as a screening tool for evaluation of coronary artery disease in pre-transplant end stage renal disease

Department of Cardiology and Nephrology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India

Correspondence Address:
A Kapoor
Department of Cardiology and Nephrology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow
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Source of Support: None, Conflict of Interest: None

PMID: 17102544

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Background : Coronary artery disease (CAD) is associated with a higher incidence of allograft failure and mortalityin patients with end-stage renal disease (ESRD) following renal transplant. Aim : To evaluate the efficacy of using carotid intimal medial thickness (CIMT) to predict the presence of CADin patients with ESRD, using coronary angiography (CAG) as the gold standard. Materials and Methods : This prospective study enrolled consecutive patients with ESRD who underwent CAGas a part of pretransplant evaluation to rule out the presence of atherosclerotic CAD. An operator who wasblinded with respect to the results of the CAG, measured carotid IMT in all patients prior to CAG and recordedit on videotape. Two independent observers blinded to the results of CAG measured carotid IMT offline tovalidate its predictive accuracy as a noninvasive test in predicting the presence or absence of CAD. Measurementof carotid IMT was done on USG B mode 7.5 MHZ probe [HP 5500 andover, Massachusetts]. Student's t-testwas used for inter-group comparisons. Pearson correlation coefficient test was used to assess the relationbetween CAD and various risk factors and carotid IMT. Linear regression analysis was applied to identifyindependent factors determining presence of CAD. A P value < 0.05 was considered statistically significant. Results : Mean CIMT was significantly higher in those with CAD as compared to those without [0.80 0.06 vs.0.700.06 mm, P< 0.0001). Patients with CIMT> 0.75 mm were older and had more incidence of diabetes(78% vs. 47%; P=0.001). Only 4/53 (7%) of patients with CIMT< 0.75 mm had CAD, vs. 38/52 (73%) in thosewith CIMT >0.75 mm. The sensitivity and specificity of using CIMT > 0.75 as a predictor of CAD was 90.47%and 73% and its positive and negative predictive values were 0.73 and 0.92. On multivariate analysis, onlyCIMT was a significant predictor of CAD. Conclusion : Carotid IMT can be used to predict CAD in patients with ESRD. In the absence of other risk factors,patients with IMT< 0.75 mm may not need a pretransplant CAG.


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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow