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Paediatric reference values for total psoas muscle area.

Eberhard Lurz1,2,3, Hiten Patel4,5, Gerald Lebovic6

  • 1Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.

Journal of Cachexia, Sarcopenia and Muscle
|January 11, 2020
PubMed
Summary
This summary is machine-generated.

This study establishes pediatric reference values for psoas muscle area (PMA) to aid in early sarcopenia identification in children. These findings provide crucial data for diagnosing muscle loss in pediatric populations.

Keywords:
ChildrenChronic DiseaseSarcopenia

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Area of Science:

  • Pediatric imaging and diagnostics
  • Muscle physiology and aging
  • Quantitative anatomy

Background:

  • Sarcopenia, the loss of skeletal muscle mass, is linked to poor outcomes in adults.
  • Children with chronic illnesses are at risk for muscle loss but lack consistent sarcopenia definitions.
  • Psoas muscle area (PMA) is a key indicator for sarcopenia in adults.

Purpose of the Study:

  • To generate pediatric reference values for psoas muscle area (PMA).
  • To establish age-specific and sex-specific PMA percentile curves at L3-4 and L4-5 lumbar levels.
  • To facilitate earlier identification and intervention for pediatric sarcopenia.

Main Methods:

  • Cross-sectional analysis of abdominal CT scans from 779 children (ages 1-16) undergoing imaging for trauma.
  • Exclusion of children with chronic medical conditions or spinal trauma.
  • Measurement of total PMA (tPMA) at L3-4 and L4-5, followed by quantile regression to model percentile curves.

Main Results:

  • High correlation between tPMA at L3-4 and L4-5 (r=0.95-0.98).
  • Provided age-specific and sex-specific tPMA percentile ranges for both lumbar levels.
  • Developed an online tool for calculating age- and sex-specific z-scores and percentiles.

Conclusions:

  • Novel pediatric growth curves for tPMA at L3-4 and L4-5 are presented.
  • These curves, along with an online tool, enable earlier identification of sarcopenia in children.
  • The findings support targeted interventions for children at risk of muscle loss.