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  • Title: Prospective analysis of carotid arterial wall structure in pediatric renal transplants with ambulatory normotension and in treated hypertensive recipients.
    Author: Krmar RT, Balzano R, Jogestrand T, Cedazo-Minguez A, Englund MS, Berg UB.
    Journal: Pediatr Transplant; 2008 Jun; 12(4):412-9. PubMed ID: 18466426.
    Abstract:
    Increased carotid IMT was found to be associated with cardiovascular risk factors. As pediatric renal transplants are at high risk for cardiovascular disease, we examined whether there is a relationship between BP and IMT in normotensive and in treated hypertensive recipients after transplantation. Thirty-one recipients aged 10 +/- 3.5 yr (16 M, 15 F) underwent repeated carotid ultrasound examinations 5.4 +/- 3.2 yr after transplantation with a 4.1 +/- 1 yr interval and were followed with annual ambulatory BP monitoring. Baseline IMT was significantly higher in transplants compared with controls. When recipients were again investigated, follow-up IMT measurements were similar compared with measurements obtained at baseline. The analysis of variance showed that baseline IMT both in recipients with strict normotension, i.e., ambulatory normotension without antihypertensive therapy at baseline and throughout the study period (n = 9), and in recipients with treated hypertension or newly diagnosed hypertension (n = 22) was significantly higher than in healthy controls (n = 21). Baseline IMT did not differ between these subgroups of recipients. Similarly, pairwise comparisons showed that baseline and follow-up IMT within each subgroup of recipients were not significantly different. Overall and regardless of time-point, no significant associations were found between systolic and diastolic 24-h BP, daytime BP, night-time BP, ambulatory BP standard deviation scores, BP loads and IMT. Our results suggest that increased IMT in pediatric renal transplants does not seem to be related to BP but more likely to other factor(s) not investigated in this study.
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