Growth impairment shows an age-dependent pattern in boys with chronic kidney disease

Area of Science:

• Pediatric Nephrology
• Growth and Development
• Chronic Kidney Disease (CKD)

Background:

• Longitudinal body growth in pediatric chronic kidney disease (CKD) remains understudied using detailed anthropometric methods.
• Understanding growth patterns is crucial for managing long-term health outcomes in children with CKD.

Purpose of the Study:

• To investigate the impact of chronological age on longitudinal body growth in boys with CKD.
• To identify specific growth patterns and evaluate anthropometric indicators of growth failure.

Main Methods:

• Prospective data collection over 7 years on 190 boys (3-21 years) with congenital/hereditary CKD (≥ stage 2 by age 10).
• Measurement of four linear growth components: body height (HT), sitting height (SHT), arm length (AL), and leg length (LL).
• Analysis of growth patterns irrespective of CKD severity and treatment modalities (conservative, rhGH, transplantation).

Main Results:

• Pediatric male CKD patients exhibit a specific age-dependent growth pattern: severe failure in early childhood, pre-pubertal acceleration, pubertal slowing, and late adolescent/early adulthood acceleration.
• Leg length (LL) demonstrated the most dynamic growth changes and emerged as the best indicator of statural growth.
• Observed growth pattern was consistent across varying CKD degrees and treatments.

Conclusions:

• A unique age-dependent physical growth pattern exists in pediatric male CKD patients.
• Leg length is a key indicator for assessing statural growth in this population.
• This identified growth pattern is essential for evaluating individual growth and treatment efficacy, including recombinant human growth hormone (rhGH) therapy.