Coronary artery calcifications in children with end-stage renal disease.
Coronary artery calcification (CAC) is common in adults with end-stage renal disease (ESRD), but little is known about the prevalence and the extent of it in children. We used multidetector spiral computed tomography (MDCT), echocardiography, and carotid and brachial high-resolution ultrasonography to screen for the presence and predisposing factors of CAC in 53 children with ESRD [15 hemodialysis (HD) patients, 24 peritoneal dialysis (PD) patients, and 14 renal transplant (rTx) recipients]. CAC was present in 15% of patients (three HD patients, three PD patients, and two rTx). The mean age of the patients with CAC was 16.4 years (range: 11.0-21.2 years), and their median CAC score was 101.3, ranging from 8.5 to 4,322 according to the Agatston method. The patients with CAC had longer duration of total dialysis (P=0.005), had higher time-integrated serum phosphorus (P<0.001), calcium-phosphate (CaxP) product (P=0.012), intact parathyroid hormone (P=0.010), vitamin B(12) levels (P=0.010), the amount of cumulative calcium-containing oral phosphate binders (OBPs) (P<0.001), and calcitriol intake (P<0.001), and had lower serum hemoglobin level (P=0.014). Interventricular septum systolic thickness (P=0.033) was significantly higher, relative wall thickness (P=0.062) tended to be higher, and flow-mediated endothelium-dependent dilatations (P=0.071) were lower without reaching statistically significant levels in those with CAC. A stepwise logistic regression analysis revealed that serum phosphorus (P=0.018) and the cumulative exposure to calcium-containing OPBs (P=0.016) were the most significant independent predictors in the development of CAC. These results indicate that even adolescents and children with ESRD may have coronary calcifications. We concluded that impaired divalent ion metabolism is the main factor in the formation of CAC in this age group.
Civilibal
Mahmut
M
Department of Pediatric Nephrology, Istanbul University, Cerrahpasa Medical Faculty, 34303 Cerrahpasa, Istanbul, Turkey. drcivilibal@hotmail.com
Caliskan
Salim
S
Adaletli
Ibrahim
I
Oflaz
Huseyin
H
Sever
Lale
L
Candan
Cengiz
C
Canpolat
Nur
N
Kasapcopur
Ozgur
O
Kuruoglu
Sebuh
S
Arisoy
Nil
N
D000293:Adolescent; D000328:Adult; D001916:Brachial Artery / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000097:blood / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000209:etiology*; D002118:Calcium / Q000378:metabolism; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D002648:Child; D003324:Coronary Artery Disease / Q000097:blood / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000209:etiology*; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood / Q000150:complications*; D008297:Male; D010530:Peritoneal Dialysis / Q000379:methods; D028044:Phosphate-Binding Proteins / Q000009:adverse effects; D010758:Phosphorus / Q000097:blood; D011237:Predictive Value of Tests; D015995:Prevalence; D012044:Regression Analysis; D012307:Risk Factors; D036542:Tomography, Spiral Computed; D014463:Ultrasonography
D028044:Phosphate-Binding Proteins; D010758:Phosphorus; D002118:Calcium