Mehmet Taşdemir1, Ayşe Güler Eroğlu2, Nur Canpolat3, Dildar Konukoğlu4, Ayşe Ağbaş3, Meltem Dönmez Sevim3, Salim Çalışkan3, Lale Sever3. 1. Department of Pediatric Nephrology, Cerrahpaşa School of Medicine, İstanbul University, Cerrahpaşa, Kocamustafapaşa, İstanbul, 34098, Turkey. drmtasdemir@hotmail.com. 2. Department of Pediatric Cardiology, Cerrahpaşa School of Medicine, İstanbul University, Cerrahpaşa, Kocamustafapaşa, İstanbul, 34098, Turkey. 3. Department of Pediatric Nephrology, Cerrahpaşa School of Medicine, İstanbul University, Cerrahpaşa, Kocamustafapaşa, İstanbul, 34098, Turkey. 4. Department of Biochemistry, Cerrahpaşa School of Medicine, İstanbul University, Cerrahpaşa, Kocamustafapaşa, İstanbul, 34098, Turkey.
Abstract
BACKGROUND: Cardiovascular disease (CVD) is an important complication of chronic kidney disease (CKD) in children. However, it is not well known when and how cardiovascular alterations start. METHODS: This cross-sectional, controlled study consisted of 25 patients and 28 healthy controls. 24-h ambulatory blood pressure monitoring, aortic pulse wave velocity (aPWV), carotid intima-media thickness (cIMT) and carotid distensibility (distensibility coefficient and β stiffness index), and echocardiography were assessed to evaluate CVD. Routine biochemical parameters, fibroblast growth factor-23 (FGF23) and high sensitive C- reactive protein were measured to determine cardiovascular risk factors. RESULTS: Hypertension was found in 12 patients (48 %). Patients had higher FGF23 levels and aPWV-standard deviation score (SDS) as compared to the controls (p = 0.003 and p = 0.002, respectively). Aortic PWV-SDS was predicted by increased daytime systolic blood pressure load (β = 0.512, p = 0.009, R 2 = 0.262). Neither cIMT nor distensibility differed between the groups; however, older age and high level of FGF23 were independent predictors of β stiffness index in patients (β = 0.507, p = 0.005, R 2 = 0.461 and β = 0.502, p = 0.005, R 2 = 0.461, respectively). As compared to controls, patients had worse left ventricular diastolic function [lower E/A ratio p = 0.006) and increased left atrial dimension (p < 0.001)]. CONCLUSIONS: Cardiovascular deteriorations appear in children with stage-2 CKD. Good control of BP and decreasing the level of FGF23 may be useful to slow down the progression of cardiovascular complications.
BACKGROUND:Cardiovascular disease (CVD) is an important complication of chronic kidney disease (CKD) in children. However, it is not well known when and how cardiovascular alterations start. METHODS: This cross-sectional, controlled study consisted of 25 patients and 28 healthy controls. 24-h ambulatory blood pressure monitoring, aortic pulse wave velocity (aPWV), carotid intima-media thickness (cIMT) and carotid distensibility (distensibility coefficient and β stiffness index), and echocardiography were assessed to evaluate CVD. Routine biochemical parameters, fibroblast growth factor-23 (FGF23) and high sensitive C- reactive protein were measured to determine cardiovascular risk factors. RESULTS:Hypertension was found in 12 patients (48 %). Patients had higher FGF23 levels and aPWV-standard deviation score (SDS) as compared to the controls (p = 0.003 and p = 0.002, respectively). Aortic PWV-SDS was predicted by increased daytime systolic blood pressure load (β = 0.512, p = 0.009, R 2 = 0.262). Neither cIMT nor distensibility differed between the groups; however, older age and high level of FGF23 were independent predictors of β stiffness index in patients (β = 0.507, p = 0.005, R 2 = 0.461 and β = 0.502, p = 0.005, R 2 = 0.461, respectively). As compared to controls, patients had worse left ventricular diastolic function [lower E/A ratio p = 0.006) and increased left atrial dimension (p < 0.001)]. CONCLUSIONS: Cardiovascular deteriorations appear in children with stage-2 CKD. Good control of BP and decreasing the level of FGF23 may be useful to slow down the progression of cardiovascular complications.
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