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Hypotheses:
TIW rGH treatment regimen (0.35 mg/kg/week divided into 3 doses, each dose being given at the conclusion of the dialysis treatment) for up to 2 years; growth response, Dual energy X-ray absorptiometry (DEXA), and quality of life (QOL) will be measured. The goal is to enroll 20 children who are Tanner 1 with decreased height SDS and/or decreased height velocity standard deviation scoreS (SDS).
If this therapy is demonstrated to be efficacious and improves growth and QOL, this therapy could be easily implemented for all eligible children on HD, since parental acceptance should be better without having to administer the rGH at home and compliance for the child will be assured.
The investigators thus propose an important study that has the ability to advance their understanding and provide evidence for the best methods to promote growth in children on dialysis. The results of this study will result in important information that will be of value to the entire pediatric nephrologist community, including health care professionals, patients, and families. In a real sense, this study will build on the 2006 Consensus Conference guidelines for evaluation and treatment of growth failure in children with chronic kidney disease (CKD). This will provide evidence for critical management decisions that can help insure better growth opportunities to more children with CKD.
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Objectives/Aims:
Study Design:
Baseline data: Height (stadiometer), Weight, BMI, Height SDS, Height velocity SDS (historical past 6 months), Weight SDS, BMI SDS, Hb, BUN, nPCR, serum albumin, serum calcium, serum phosphorus, iPTH, electrolytes, high sensitivity CRP (as a marker of inflammation), dialysis adequacy (defined by single and double pool Kt/V - Kt/V is a unitless number used to quantify hemodialysis and peritoneal dialysis treatment adequacy: K - dialyzer clearance of urea, t - dialysis time, V - patient's total body water; in HD the target is 1.2), IGF-1, IGFBP-3, hip films and bone age (4,5,6,9). In addition, lean body mass/and fat mass will be assessed by DEXA (to standardize the determination of LBM, DEXA to be done mid week, after the dialysis treatment, to avoid the excess fluid commonly present after 2 days off dialysis each weekend) and quality of life will be assessed by the PedsQL 4.0 Generic Core Scales (10). The nutritional parameters that will be determined (wt/ht, ht SDS, BMI, nPCR and serum albumin) represent the currently used assessments of nutrition for these patients and have been validated as best measures of nutrition in children on dialysis (12).
Assessments to be repeated at the following intervals:
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3 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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