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Metabolic Stabilization & Weight Recovery with Peptamen Junior® HP in Pediatric Patients with Traumatic Brain Injury (TBI)

Peptamen Junior® HP vanilla formula carton — high-protein, peptide-based formula for critically ill pediatric patients

A case study of a 9-year-old patient with severe TBI in the PICU demonstrates that early initiation of Peptamen Junior® HP — a high-protein, peptide-based formula containing 100% whey protein and 60% MCT — supported metabolic stabilization, mitigated lean body mass loss, and contributed to partial weight recovery. The patient was discharged from the PICU without a diagnosis of malnutrition.

Case Study

High-Protein Enteral Nutrition in a Pediatric Patient with Severe Traumatic Brain Injury

Boukas K, Nguyen JN, Caminos C, Nawaratne U. J Parenter Enteral Nutr. 2026; 50(S1): S226–S227.

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Introduction

Nutritional support is critical in the management of critically ill children, particularly those at high risk of malnutrition due to hypermetabolic and catabolic states.1,2 Traumatically injured children often face profound metabolic disturbances and increased energy needs that are difficult to meet early in the hospitalization. In the Pediatric Intensive Care Unit (PICU), early enteral nutrition has been associated with improved clinical outcomes and enhanced recovery.3

Background

A 9-year-old boy was admitted to the PICU with multiple injuries, including a severe traumatic brain injury. Enteral nutrition (EN) was started 60 hours post-admission with a high-protein, peptide-based formula (Peptamen Junior® HP). His course included 15 days of mechanical ventilation, tracheostomy and gastrostomy tube placement on day 11, and surgical repair of other injuries. PICU length of stay (LOS) was 18 days; total hospital LOS was 46 days.

Results

Metabolic Stabilization
Measured resting energy expenditure (MREE) via indirect calorimetry:
Measured resting energy expenditure of 1,198 kcal on Day 5 and 1,156 kcal on Day 11
Optimal respiratory quotient (RQ):
Optimal respiratory quotient of 0.86 achieved, within the optimal range of 0.8 to 0.9 for critically ill patients
The RQ remained stable at 0.86 in both studies, indicating a mixed substrate utilization and an optimal metabolic state.
Weight Recovery
Weight recovery diagram showing patient weight at 48 kg on admission, dropping to 43.5 kg during acute phase, then recovering to 46 kg at PICU discharge
Patient weight at admission was 48 kg. Weight dropped to 43.5 kg during the acute phase before recovering to 46 kg at PICU discharge.
Clinical Improvement
Clinical improvement diagram comparing early state versus later state for hypermetabolism, catabolic stress, and nitrogen balance — all three markers improved over the PICU course
Laboratory markers supported the presence of hypermetabolism and catabolic stress, with improvement in nitrogen balance and metabolic stability over the course of the PICU stay.
 
Conclusion

Patient left the PICU without a diagnosis of malnutrition.

Early initiation of Peptamen Junior® HP:

  • Supported metabolic stabilization
  • Mitigated excessive loss of lean body mass
  • Contributed to partial weight recovery

Indirect calorimetry confirmed efficient nutrient utilization and appropriate caloric provision without evidence of overfeeding.

Peptamen Junior® HP was well tolerated and provided balanced macronutrient support.

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