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Impact of etiology of chronic renal failure on growth in children.

A prospective study was carried out in the Department of Pediatrics, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh, from October, 2001 to October, 2003 to find out the impact of different etiology of chronic renal failure on growth in children. Fifty children of both sexes under 15 years of age with clinical and biochemical evidence of chronic renal failure (CRF) with creatinine clearance (Ccr) of <75 ml/min/1.73m2 were included in the study. On the basis of underlying causes of CRF, the children were divided into congenital (n=30) and acquired (n=20) groups. All patients' height, weight, radiographs of different bones was obtained to evaluate the presence of renal osteodystrophy (ROD) and for assessment of bone age. Serum intact parathormone (iPTH) level was also assayed in all patients. These parameters were evaluated in two groups. CRF children due to congenital anomalies had stunting and wasting in 23 (76.7%) and 20 (66.7%) cases respectively and the difference between two groups was highly significant (P<0.001). Alkaline phosphatase (467.70+/-218.55 U/L) and iPTH (91.43+/-33.42 pg/ml) were also significantly higher in the congenital group (P<0.001 and P<0.05 respectively). Radiographic features of ROD were present in 15 (50%) cases in congenital group in comparison to 4 (20%) in acquired group and the growth zone lesion was the commonest type of ROD in congenital group (66.7%). CRF should be diagnosed as early as possible to maintain growth potential.