Paediatric anaesthesia & critical care

Increased ureagenesis revealing metabolic intolerance to enhanced nutrition in the PICU: a secondary analysis of the PEPaNIC RCT

Crit CarePublished Secondary analysis of the PEPaNIC randomised trial

Authors' conclusion

Increased plasma/serum urea or UCR with early-PN partially explained the harm by early-PN, suggesting these may identify critically ill children metabolically intolerant to enhanced nutrition.

Study context

Population
Critically ill children (newborn-17 years) in pediatric intensive care units (PICUs) (Leuven-Rotterdam-Edmonton), not receiving renal replacement therapy (RRT)PEPaNIC-patients recruited
Participants
1,440 children
Comparison
Association of first-week maximum UCR with outcomes; early-PN vs late-PN
  • early-PNn = 665
  • late-PNn = 663reference
Primary endpoint
Risk of new infections and duration of PICU dependency
Methodological detailsmulticentre
  • Multicentre

Primary result

As reported in the abstract

Higher first week maximum UCR (per 30 age-normalized units)
Higher first week maximum UCREstimate (95% CI)P value
New infection
adjusted OR 1.746(1.353–2.265)
P < 0.0001
Earlier live PICU discharge
adjusted HR 0.745(0.671–0.824)
P < 0.0001

Per 30 age-normalized units, as printed

Secondary outcomes

OutcomeEstimateP value
Earlier live hospital discharge, per 30 age-normalized units of first week maximum UCRadjusted HR 0.778 (CI 0.703–0.860)P < 0.0001
90-day mortality, per 30 age-normalized units of first week maximum UCRadjusted OR 1.432 (CI 1.029–1.993)P = 0.033

Urea and UCR, early-PN vs late-PN · first 11 days

Urea concentrations and UCRs higher in early-PN than late-PN

Urea concentrations

Similar results obtained for urea concentrations

Original publication

Increased ureagenesis revealing metabolic intolerance to enhanced nutrition in the PICU: a secondary analysis of the PEPaNIC RCT. Crit Care. Published 25 September 2026. doi:10.1186/s13054-026-06345-7

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.