Aortic stiffness in ESRD children before and after renal transplantation

Aoun, Bilal; Lorton, Fleur; Wannous, Hala; Lévy, Bernard; Ulinski, Tim
July 2010
Pediatric Nephrology;Jul2010, Vol. 25 Issue 7, p1331
Academic Journal
Cardiovascular complications are the main cause of death in end-stage renal failure in adult patients, but those complications start in childhood. Renal transplantation (RT) seems to reduce or even reverse certain abnormalities seen in dialyzed patients. Since RT seems to correct metabolic abnormalities that play a role in cardiovascular disease, aortic pulse wave velocity (APWV) was used to evaluate aortic stiffness before and after RT. We included 15 children on chronic hemodialysis (HD), aged 11.1 ± 4.8 years and dialysis duration was 12.9 ± 7.4 months. APWV was performed every 6 months before RT and 6 months after. There was no significant difference in APWV (6.1 ± 1.3 m/s vs 6.5 ± 1.4 m/s) and augmentation index (AI) on HD and 6 months after RT. APWV pre-transplant was not correlated with time on HD, but increased with age ( p = 0.016). No correlation between APWV pre-/post-transplant and other HD parameters or calcineurin inhibitor exposure were found. Only graft function was inversely correlated with APWV post-transplant ( p = 0.02). In conclusion, aortic stiffness seems to remain stable before and 6 months after pediatric RT. Graft function was inversely correlated with APWV. Differences in vessel structure among children of the same age group and increase in aortic stiffness with age may jeopardize data interpretation.


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